Power-Supply Cookbook - Digchipapplication-notes.digchip.com/003/3-3389.pdf · Power-Supply...

Power−Supply Cookbook

Maxim Power Supply CookbookCompiled: November 2008

Available at: http://www.maxim−ic.com/cookbook/

Maxim has developed power supplies for a wide range of applications. Choose the specifications thatmost closely meet your needs. Then view a circuit design, complete with schematic diagram andbill of materials.

Evaluation boards and custom variations of these designs are available to qualified customers. Pleasecontact your local Maxim sales office to request an assembled circuit.

Contact: [email protected]

Also See: Isolated Power−Supply Reference Guides, http://www.maxim−ic.com/isolated−supply−guide

Page Topology VIN VOUT IOUT Features8 Battery Charger 18.5V to 28V 2, 3 or 4 Li+ cells 5A 300kHz PWM, external

FET

10 Inverting 12V −5V 2A 300kHz PWM, externalFET

11 Inverting 3V to 5.5V −12V 0.4A 300kHz PWM, externalFET

12 Inverting 12V −48V 0.1A 300kHz PWM, externalFET


14 Inverting 3.3V −3.6V 1.2A 300kHz PWM, externalFET

16 Inverting 3.3V −5.2V 1A 600kHz PWM, InternalFET, uses step−down ICas inverter


19 Inverting 12V −48V 0.1A 300kHz PWM, externalFET, transformer

21 Inverting 12V −0.7V 2A 300kHz PWM, externalFET

23 Inverting 15V −200V 0.03A 500kHz PWM, externalFET, transformer, MEMSsupply


27 Inverting 5V −5.2V 0.5A 300kHz PWM, externalFET

29 Inverting 12V −5V 1A 300kHz PWM, externalFET

31 Inverting 12V −5V 0.4A 250kHz PWM, externalFET, boost with invertingcharge pump


34 Inverting 5V −5.2V 0.5A 300kHz PWM, externalFET


38 Inverting 12V −80V 0.12A

1

300kHz PWM, externalFET, transformer

40 Inverting 3V to 6V −12V 0.6A 300kHz PWM, externalFET


43 Inverting 7.5V to 13.5V −5V 0.5A 300kHz PWM, externalFET

45 Inverting 11V to 14V −64V 0.35A 500kHz PWM, externalFET, transformer

47 Inverting −48V −60V 0.1A 200kHz PWM, externalFET, transformer


50 Inverting, multi−output 12V −65V−24V

0.1A0.52A

250kHz PWM, externalFET, transformer, SLICsupply


0.06A0.15A


54 Inverting, multi−output 5V −24V−72V+3.3V

0.1A0.025A0.1A

100kHz PWM, externalFET, transformer,isolated SLIC


0.25A0.12A


57 Inverting, multi−output 10V to 25V −62V−25.5V+38V

0.09A0.08A0.09A



0.12A0.06A



0.12A0.075A


62 Inverting, multi−output 12V −80V−53V−26V

0.1A0.12A0.12A


64 Linear Regulator,multi−output

3.3V, 6.5V and 12V 5V2.5V

0.7A0.735A

external FET, dual linearreglator, for ThomsonJupiter chip set

65 Off−Line 120VAC 28V 0.7A 200kHz PWM, externalFET, drives 4 Luxeonhigh brightness LEDs

68 Step−Down 3.3V 1.8V 4A 1MHz PWM, externalFET

70 Step−Down 12V 3.3V 2.5A 1MHz PWM, externalFET

72 Step−Down 10V to 20V 5V 1A 200kHz PWM, externalFET, 95% efficiency

74 Step−Down 5V 1V 6A 200kHz PWM, externalFET, Low VoltageOutput

75 Step−Down 5V 1.25V 6A 200kHz PWM, externalFET, DDR terminationsupply sources and sinkscurrent

77 Step−Down 12V 1.0V to 5.5V 12A 200kHz PWM, externalFETs, digitallyadjustable


81 Step−Down 12V 2.5V 20A 200kHz PWM, externalFET, DDR VDDQ

82 Step−Down 2.5V 1.25V 7A

2

550kHz PWM, externalFET

84 Step−Down 2.5V or 1.5V 1.25V or 0.75V 3.5A 550kHz PWM, externalFET, DDR VTT

87 Step−Down 12V 1.8V 20A 300kHz PWM, externalFET

89 Step−Down 22V 1.25V 1.5A 550kHz PWM, externalFET, DDR VTT

91 Step−Down 12V 5V 10A 200kHz PWM, externalFET


95 Step−Down 3.3V 1V 1.5A 1MHz PWM, externalFET

97 Step−Down 3.3V 1.8V 0.8A 1MHz PWM, externalFET

99 Step−Down 5V 2.5V 3A 1MHz PWM, externalFET




107 Step−Down 3.3V 1.8V 3A 100kHz PWM, externalFET, low costcomponents

109 Step−Down 3.3V 2.5V 10A 100kHz PWM, externalFET, low costcomponents

111 Step−Down 5V 2.5V 0.5A 100kHz PWM, externalFET, low costcomponents

113 Step−Down 5V 3.3V 8A 100kHz PWM, externalFET, low costcomponents

115 Step−Down 12V 2.5V 5A 100kHz PWM, externalFET, low costcomponents

117 Step−Down 12V 3.3V 0.75A 100kHz PWM, externalFET, low costcomponents

119 Step−Down 12V 5V to 12V 2.5A 1MHz PWM, externalFET, PWM voltageadjust, Fan SpeedControl


128 Step−Down 12.6V to 15.4V 3.3V 2A 100kHz PWM, externalFET, low costcomponents

130 Step−Down 3.3V 1.25V 12A 550kHz PWM, externalFET, DDR termination

132 Step−Down 3V to 3.6V 1.5V 2A 1MHz PWM, externalFET

134 Step−Down 12V 5V 0.3A external FET

135 Step−Down 3.3V 1.2V 1A 1.4MHz PWM, internalFET



141 Step−Down 5V 1.2V 2.1A

3

1MHz PWM, externalFET


145 Step−Down 6.5V to 24V 1.5V 30A 500kHz PWM, externalFET, dual−phase, AMDAthlon" XP Mobilepower


150 Step−Down 5V 0.9V to 1.8V 1.8A 300kHz PWM, externalFET, XENPAK APSCompliant


154 Step−Down 5V 1V or 1.2V 6A 300kHz PWM, externalFET, digital select of 1Vor 1.2V

156 Step−Down 12V 3.3V 6A 300kHz PWM, externalFET, 92% efficiency

158 Step−Down 3.3V 1.8V 5A 300kHz PWM, externalFET, 92% efficiency


162 Step−Down 5V 3.3V 4A 1MHz PWM, externalFET, 91% efficiency

164 Step−Down 3V to 5.5V 1.5V 2A 1MHz PWM, externalFET, ceramic capacitors

166 Step−Down 8V to 20V 2.5V 10A 300kHz PWM, externalFET

168 Step−Down 12V to 20V 5V 6A 300kHz PWM, externalFET, 93% efficiency



177 Step−Down 11V to 23V 3.7V 1.5A 300kHz PWM, externalFET, 93% efficiency

179 Step−Down 5V 3.18V 0.32A 750kHz PWM, internalFET, USB input


182 Step−Down 3.0V to 5.5V 1.8V 3A 1MHz PWM, externalFET




190 Step−Down 3V to 5.5V 1.05V 3.5A 300kHz PWM, externalFET

192 Step−Down 7V to 13.2V 1.9V 2.5A 300kHz PWM, externalFET

194 Step−Down 5V 1.2V 3.5A 300kHz PWM, externalFET


198 Step−Down 3.3V 1.8V 10A 300kHz PWM, externalFET

200 Step−Down 3.3V 1.2V 7A 300kHz PWM, externalFET

4

202 Step−Down 3V to 5.5V 1.5V 2A 300kHz PWM, externalFET



208 Step−Down 18V to 24V 12V 2A 300kHz PWM, externalFET

210 Step−Down 18V to 20V 12V 4A 300kHz PWM, externalFET



216 Step−Down 8V to 22V 3.3V 1.2A 300kHz PWM, externalFET








232 Step−Down 5.5V to 24V 0.9V 3A 300kHz PWM, externalFET




241 Step−Down 9V to 19V 1.0V/1.2V 4.5A 100kHz PWM, externalFET, dynamic voltageshift



256 Step−Down 10V to 20V 1.05V 4.5A 100kHz PWM, externalFET

259 Step−Down,multi−output

24V 3.3V5V

7A1A



9V to 16V 3.3V2.5V5V12V

1.8A1.4A0.3A0.5A



10V to 18V 3.3V2.5V5V−5V

1.3A0.9A0.35A0.18A



24V 7V5V−5V

0.5A1A0.1A



9V to 16V 3.3V1.8V5V

1.5A1A0.5A


5

12V−12V

0.4A0.1A


24V 5.15V7V−5V

0.8A0.4A0.08A



8V to 18V 3.3V2.5V5V

1A1A0.1A



12V 3.3V2.5V5V

1.5A0.13A0.35A



5V to 28V 3.3V8V5V2.5V

1A0.05A0.05A0.01A



5V 3.1V5V12V

0.4A0.1A0.03A



6V and 3.3V 1.24V2.5V1.8V1.5V

3A1.4A0.17A0.14A

200kHz PWM, externalFET, 1 DC−DC plus 3LDOs


12V 1.25V1.25V

8A8A

700kHz PWM, externalFETs, dual out of phase


7V to 20V 1.8V3.3V

3A2A

1.2MHz PWM, externalFET, dual out of phase


10.8V to 13.2V 1.8V3.3V

0.8A1.1A

1.2MHz PWM, externalFET, dual out of phase,ceramic capacitors


2.7V to 5.5V 1.8V2.5V

0.4A0.1A

750kHz PWM, internalFET


6V 1.8V2.5V

3A3A

1.2MHz PWM, externalFET, dual out of phase,ceramic capacitors


10V to 14V 3.3V5V

7A0.15A



9V to 12V 6V1.5V

1.5A3A

600kHz PWM, externalFET, dual out of phase


9V to 12V 3.4V2.6V

1.75A3A

1MHz PWM, externalFET


6V to 14V 3.3V1.8V5V−48V

0.35A0.35A0.35A0.1A


312 Step−Up 3.3V to 5.5V 12V 2.3A 250kHz PWM, externalFET

314 Step−Up 11V to 14.3V 16V 4.4A 250kHz PWM, externalFET, 93% efficient

315 Step−Up −48V 5V 4A 200kHz PWM, externalFET, no transformer,unisolated

316 Step−Up 12V 18.75V 3.1A 500kHz PWM, externalFET

317 Step−Up 13.5V to 26.4V 48V 0.2A 500kHz PWM, externalFET

319 Step−Up, multi−output −18V to −24V +5V+3.3V−6V−24V−85V

0.35A0.15A0.006A0.03A0.001A

300kHz PWM, externalFET, no transformer

321 Step−Up/Down 2.5V to 6V 3.3V 1.5A 250kHz PWM, externalFET, SEPIC

322 Step−Up/Down 8V to 20V 12V 2.5A 500kHz PWM, externalFET, SEPIC

6

323 Step−Up/Down 2.7V to 5.5V 3.8V 0.8A 300kHz PWM, internalFET, single inductor,buck−boost

7

5A 2, 3 , or 4-cell Li-Ion Battery Charger

1873T_5A

RWY

9/05/05

16

15

13

3

6

5

5

14

1

2

VL

DCIN

CCI

ICHG/EN

GND

CSB

EXT

CSSN

CSSPVH

U1

MAX1873T

18.5V to 28V

VIN

SYSTEM

LOAD

C2

0.22uF

R9

100k

C4

47nF

P1

FDS

6675

L1

10uH

D2

CMSH5-40

C5

68uF

25V

R1

0.02

1W

R4

100k

R3

100k

R7

4.7

C7

0.1uFC3

0.22uF

35V

C9

22uF

35V

R6

4.7

C8

0.1uF

BATT

REF

VADJ

IOUT7

12

8

9

10CCS

CCV4

C5

47nF

R8

100k

VREF

JU1

C1

2.2uF

C13

1nFR5

10k

C6

0.1uF

D1

CMSH5-40

C10

22uF

35V

R2

0.02

1W BATT+

GND

C15

0.1uF

C14

0.1uF

C16

1uF

VREF

IOUT

BILL OF MATERIALS

18.5V to 28V Input

16.8V @ 5A Output

9/05/05

1873T_5A

DESIGNATION QTY DESCRIPTION

C1 1 2.2uF 10V X5R ceramic capacitor ((0805)

Taiyo Yuden LMK212BJ225MG

C2,C3 2 0.22uF 35V ceramic capacitor (0805)

Taiyo Yuden GMK212BJ224KG

C4,C5 2 47nF 50V X7R ceramic capacitor (0805)

Taiyo Yuden UMK212BJ473KG

C6,C7,C8,C14,

C15

5 0.1uF 50V X7R ceramic capacitor (0805)

Taiyo Yuden UMK212BJ104KG

C9,C10 2 22uF 35V tantalum capacitor (E)

AVX TPSE226K035R0200

C11 1 68uF 25V tantalum capacitor (E)

AVX TPSE686M025R0125

C13 1 1nF ceramic capacitor (0603)

C16 1 1uF 10V X7R ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105KG

D1,D2 2 5A 40V Schottky diode (SMC)

Central Semi CMSH5-40

L1 1 10uH 5.4A Power inductor (12.3 x 12.3 x 8)

Sumida CDRH127-100

P1 1 20m Ohm -30V P-ch MOSFET (SO-8)

Fairchild FDS6675

R1,R2 2 0.02 Ohm 1W 5% resistor (2512)

Dale

R3,R4,R8,R9 4 100k Ohm 5% resistor (0805)

R5 1 10k Ohm 5% resistor (0805)

R6,R7 2 4.7 Ohm 1% resistor (0603)

U1 1 MAX1873TEEE (16-QSOP)

CIRCUIT ID A B C DInput (V) 12 3 to 5.5 12 12Output (V) -5 -12 -48 -72Output (A) 2 0.4 0.1 0.1CCOMP (µF) 0.047 0.22 0.068 0.1CIN (µF) 3x10 3x22 10 10COUT (µF) 2 x 100 2 x 47 47 33CFB (pF) 390 1200 1800 1800R1(k) (1%) 40.2 95.3 383 576R2(k) (1%) 10 10 10 10RCOMP (k) 8.2 10 150 1800RCS () 0.02 0.02 0.05 0.05RFREQ (k) 150 150 150 150D1 CMSH5-40 CMSH5-40 CMR1U-02 CMR1U-02L1 (µH) 10 10 47 82P1 FDS6685 FDS6375 IRFR5410 IRFR5410

Component List for Application Circuits

10G Network

V+VL

FREQ

COMP

REFGND

FB

PGND

CS

EXT1

2

3

4

5

6

7

8

9

10

U1MAX1846

C5680uF

6V

C10.47uF

C256nF

C40.1uF

C7680uF

6V

P1FDS637532mOhm

D1EC31

QS03L

L16.8uH

UP4-6R810mOhm

R1150k

(300kHz)R239k

R50.0200.5W

R629.4k1%

R710.0k1%

+3V to +3.6VINPUT

-3.6V@ 1.2A

1846-3v6RWY

08/24/01+3V to -3.6V @ 1.2A

C3220pF

R4100

C61000pF

L210uHCDRH

6D28-100

C822uF10V

R322k

Vin Iin Vout Iout Efficiency3.5154 1.642 -3.6159 1.2044 0.7543.3033 1.761 -3.6159 1.2044 0.7493.0876 1.905 -3.6158 1.2044 0.740

BILL OF MATERIALS3V to 3.6V Input

-3.6V @ 1.2A Output08/24/01

1846-3v6DESIGNATION QTY DESCRIPTIONC1 1 0.47uF ceramic capacitor (0805)C2 1 56nF ceramic capacitor (0805)C3 1 220pF ceramic capacitor (0805)C4 1 0.1uF ceramic capacitor (0805)C5,C7 2 680uF 6V organic semiconductor capacitor

Sanyo OS-CON 6SP680MC6 1 1nF ceramic capacitor (0805)C8 1 22nF 10V ceramic capacitor (1812)

Taiyo Yuden LMK432BJ226MND1 1 3A 30V Schottky diode

Nihon EC31QS03LL1 1 6.8uH 5A Power Inductor

Coiltronics UP4-6R8L2 1 10uH 1.2A Inductor

Sumida CDRH6D28-100P1 1 32m Ohm -20V P-FET (SO-8)

Fairchild FDS6375R1 1 150k Ohm 5% resistor (0805)R2 1 39k Ohm 5% resistor (0805)R3 1 22k Ohm 5% resistor (0805)R4 1 100 Ohm 5% resistor (0805)R5 1 20m Ohm 1% 0.5W resistor (2010)

Dale WSL-2010-R050FR6 1 29.4k Ohm 1% resistor (0805)R7 1 10.0k Ohm 1% resistor (0805)U1 1 MAX1847EEE (16-QSOP)

FB

BOOT

AGND

PGND

LX

REFCC

ILIM/SS

CVL

SYNC/PWM

STBY

SHDN

CVH

AIN

IN

U1MAX1685

1685-5RWY6/7/01

3.3V into -5.2V @ 1A

R131.6k

R210k

D1EC10QS03L

L122uH

CDRH6D38-220

C133uF10V

C20.1uF

C30.1uF

C51uF

C622nF

C70.1uF

C833uF10V

3.3VINPUT

-5.2V @ 1A

C410nF

C90.1uF

Notes:C1,C2 Sanyo 10TPA33MD1 NihonL1 Sumida

Server

V+VL

FREQ

COMP

REFGND

FB

PGND

CS

EXT1

2

3

4

5

6

7

8

9

10

MAX1846

C510uF25VCER

C10.47uF

C227nF

C40.1uF

C610uF25VCER

P1Si9435DY55mOhm

D1EP05Q03L

L1100uH

DS5022P-104

R1150k

(300kHz)R210k R3

0.10.25W

R497.6k1%

R510.0k1%

+12VINPUT

-12V @250mA

1846-12bRWY

08/10/01+12V to -12V @ 250mA

C3220pF

BILL OF MATERIALS11.4V to 12.6V Input

-12V @ 250mA Output08/10/01

1846-12bDESIGNATION QTY DESCRIPTIONC1 1 0.47uF ceramic capacitor (0805)C2 1 27nF ceramic capacitor (0805)C3 1 220pF ceramic capacitor (0805)C4 1 0.1uF ceramic capacitor (0805)C5,C6 2 10uF 25V ceramic capacitor (1812)

Taiyo Yuden TMK432BJ106MMC6 1 1500pF ceramic capacitor (0805)D1 1 500mA 30V Schottky diode

Nihon EP05Q03LL1 1 100uH 1A Inductor

Coilcraft DS5022P-104P1 1 55m Ohm 30V P-channel MOSFET (SO-8)

Siliconix Si9435DYR1 1 150k Ohm 5% resistor (0805)R2 1 10k Ohm 5% resistor (0805)R3 1 100m Ohm 1% 0.25W resistor (1210)R4 1 97.6k Ohm 1% resistor (0805)R5 1 10.0k Ohm 1% resistor (0805)U1 1 MAX1846EUB (10-uMAX)

MAX1847 transformer application

INVL

FREQ

COMP

REFGND

FB

PGND

CS

EXT

1

2

16 8

3

4

5

10,11

14

6

U1MAX1847

C710uF25VCER

C10.47uF

C222nF

C40.1uF

C939uF100V

MV-AX0.39Ohm

N1IRLL27050.05Ohm

D1CMR1U-02

T11:4

VP1-0190Lpri = 12.2uH

Rpri = 73mOhm

R1150k

(300kHz)

R268k R5

0.050.5W

R6383k1%

R710.0k1%

+12VINPUT

-48V @100mA

1847-48tRWY

09/17/01+12V to -48V @ 100mA

SYNC POL SHDN

12

13

15

C8100pF100V

R8470

C61nF

N.C.7,9

11,12

8,9 106,7

3,52,4

1

C3220pF

R322k

R4100

C51nF

Vin Iin Vout Iout Efficiency10.795 0.499 -47.673 -0.100 0.88511.999 0.450 -47.672 -0.100 0.883 <200mVpp13.202 0.409 -47.671 -0.100 0.883


-48V @ 100mA Output09/18/01

1847-48tDESIGNATION QTY DESCRIPTIONC1 1 0.47uF ceramic capacitor (0805)C2 1 22nF ceramic capacitor (0805)C3 1 220pF ceramic capacitor (0805)C4 1 0.1uF ceramic capacitor (0805)C5,C6 2 1nF 6V ceramic capacitor (0805)C7 1 10uF 25V ceramic capacitor (1812)

Taiyo Yuden TMK432BJ106MMC8 1 100pF 100V ceramic capacitor (0805)C9 1 39uF 100V aluminum electrolytic capacitor

Sanyo 100MV39AXD1 1 1A 200V Ultra-fast recovery diode

Central Semi CMR1U-02N1 1 50m Ohm 55V N-FET (SOT-223)

IRLL2705R1 1 150k Ohm 5% resistor (0805)R2 1 68k Ohm 5% resistor (0805)R3 1 22k Ohm 5% resistor (0805)R4 1 100 Ohm 5% resistor (0805)R5 1 50m Ohm 1% 0.5W resistor (2010)

Dale WSL-2010-R050FR6 1 383k Ohm 1% resistor (0805)R7 1 10.0k Ohm 1% resistor (0805)R8 1 470 Ohm 0.25W resistor (1210)T1 1 1:4 Transformer

Coiltronics VP1-0190U1 1 MAX1847EEE (16-QSOP)

1847-0a7

RWY

2/24/05

15

14

13

12

6

10,11

5

4

3

8

16

1

2

IN

POL

SYNC

VL

SHDN

FREQ

EXT

CS

PGND

FB

COMP

REF

GND

U1

MAX1847

P1

FDS

9435A

R2

22k

L1

4.7uH

FDV

0630

R5

0.022

0.5W

D1

EC21QS04

C7

22uF

6V

X5R

R6

5.62k

R7

10.0kC10

6.8nF

C9

0.1uF

R3

68k

C5

6.8nF

R4

150k

(300kHz)

C1

0.47uF

SHDN

10.8V to 13.2V

VIN

-0.7V@2A

VOUT

C2

4.7uF

25V

X5R

R15

100

C21

1nF

N1

FDN361AN

P2

FDN360P

R19

100k

R18

100k

C8

1000uF

2.5V

TPB

C3

470uF

25V

MV-AX

Vin Iin Vout Iout Efficiency

12.01 0.0009 -0.703 0

10.77 0.26 -0.696 2.04 0.507

12.00 0.25 -0.696 2.11 0.490

13.23 0.23 -0.696 2.08 0.476

20MHz BW ~40mVpp

Note: 1) C3 is not necessary if there is sufficient bulk bypass capacitance close by.

2) N1 and P2 are included to force the output to 0V in shutdown.

BILL OF MATERIALS

10.8V to 13.2V Input

-0.7V @ 2A Output

2/24/05

1847-0a7


C1 1 0.47uF ceramic capacitor (0603)

C2 1 4.7uF 25V X5R ceramic capacitor (1210)

Taiyo Yuden TMK325BJ475MN

C3 1 470uF 25V aluminum electrolytic capacitor

Sanyo 25MV470AX

C5 1 6.8nF ceramic capacitor (0805)

C7 1 22uF 6V X5R ceramic capacitor

Taiyo Yuden JMK325BJ226MM

C8 1 1000uF 2.5V polymer capacitor

Sanyo POSCAP 2R5TPB1000M




D1 1 2A 40V Schottky diode

Nihon EC21QS04

L1 1 4.7uH 3.3A Inductor

Toko FDV0630-4R7

N1 1 0.1 Ohm 20V N-ch MOSFET (SOT-23)

Fairchild FDN361AN


Fairchild FDS9435A

P2 1 30m Ohm -30V P-ch MOSFET (SOT-23)

Fairchild FDN360P




R5 1 0.022 Ohm 0.5W 5% resistor (1812)

R6 1 5.62k Ohm 1% resistor (0603)

R7 1 10.0k Ohm 1% resistor (0603)

R15 1 100 Ohm 5% resistor (0603)

R18,R19 2 100k Ohm 5% resistor (0603)

U1 1 MAX1847EEE (16-QSOP)

MAX1856 15VIN to -200Vout @0.03A

Table 1: BILL OF MATERIALS

DESIGNATION QTY DESCRIPTIONC1 1 100 F 250V electrolytic capacitor

Sanyo 250MV100FAZ (2x in series)C3,C4 2 10 F 25V X5R ceramic capacitor (1812)

Taiyo Yuden TMK432BJ106KMC6 2 10 pF 200V capacitor

(through hole – connect 2 in parallell)C8 1 1000pF 50V ceramic capacitorC9 1 1 F X7R ceramic capacitor (1206)

Taiyo Yuden TMK316BJ105KLC10,C13 2 1000 pF, NP0 ceramic capacitors (0805)

AVX 0805-5A-102-JAT-2AC11 1 1 F, X7R ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105KGC12 1 2.2 F, 10V ceramic capacitor (1206)

MURATA GRM42-6X7R225K010ADD2 1 8A, 600V Ultra-fast recovery diode

International Rectifier HFA08TB60SD1, D3 2 OPENN1 1 N-channel MOSFETs

International Rectifier IRLL2705 R2 1 500 , 5% resistor ( through hole)R3 1 SHORTR4 1 11 , 5% resistor ( 0805/0603)R5 1 10 , 5% resistor ( 1206)R6 1 0.033 , 1% sense resistor (2010)

DALE 0.5W R7 1 100 , 5% resistor (0805)R8 1 100 k, 1% resistor (0805)R9 1 4.7 k, 1% resistor (0805)R10 1 750k , 1% resistor (0805)R11 1 OPENR12 1 100 k, 5% resistor (0805)T1 1 Coiltronics transformer custom woundJU1 1 2-pin headerU1 1 MAX1856EUB (10 MAX)

Schematic:

VCC

LDO

FREQ

EXT

FB

U1MAX1856

CS+

GND

PGND

N1 IRLL27050.0455V

R60.033

C91uF

REF C131000 pF

R8100k

SYNC/SHDN\

C410uF25V

2

4

1

10

9 8

6

7

5

3

T1: Custom woundCoiltronics SG3, EFD15 coreLpri = 11uH,Turns ratio= 1:8

pri =AWG # 30 quadfilar; 9 turnssec=AWG # 34 two layers; 72 turns total

+15V

T1Secondary

R10750k1%

C1100uF250V (2xin series)

D2 8A 600VUltrafastRectifier

HFA08TB60S

C122.2uF

R94.7k1%

toREF pin

1

12

C111uF

5867 VOUT1- 200V@ 30mA

R2500

C620pF

R7100

JumperJU1

freq=500kHz

2

11R510

C101000 pF

R12100k

C310uF25V

6/6/01+15V to -200V @30mA. This uses the MAX1856 and a transfomer (that will need1 to 8 turns ratio) to make a flyback

Notes:T1: Coiltronics or equivalent. The general specs are: Primary L = 11uHcritical), Primary current rating = >2.5Amps, Turns ratioN1: Any logic-level (Ron rated at 5V) N-FET with similar ratings maysubstituted.

R411

C81000 pF

V+VL

FREQ

COMP

REFGND

FB

PGND

CS

EXT1

2

3

4

6

5

7

8

9

10

MAX1846

C54.7uF25VX5R

C10.47uF

C227nF

C40.1uF

C610uF25VX5R(2x)

P1Si9407AEY0.15Ohm

D1EC10QS04

L1150uHDO5022P-154

0.25OhmR1150k

(300kHz)R227k

R40.1

0.25W

R5121k1%

R610.0k1%

13.5V to 16.5VINPUT

-15V @ 0.25A

1846-15cRWY8/13/02

C356pF

R333k

Vin Iin Vout Iout Efficiency15.001 0.0019 -15.017 013.501 0.3137 -15.013 -0.2505 0.88915.005 0.2842 -15.015 -0.2505 0.88216.512 0.2603 -15.017 -0.2505 0.875

55mVpp

BILL OF MATERIALS 13.5V to 16.5V Input

-1.5V @ 0.25A Output8/13/02

1846-15cDESIGNATION QTY DESCRIPTIONC1 1 0.47uF ceramic capacitor (0603)C2 1 27nF ceramic capacitor (0603)C3 1 56pF ceramic capacitor (0603)C4 1 0.1uF ceramic capacitor (0603)C5 1 4.7uF 25V X5R ceramic capacitor (1210)

Taiyo Yuden TMK325BJ475MNC6 2 10uF 25V X5R ceramic capacitor (1812)

Taiyo Yuden TMK432BJ106MMD1 1 1A 40V Schottky diode

Nihon EC10QS04L1 1 150uH 2A Inductor

Coilcraft DO5022P-154P1 1 150m Ohm -60V P-ch MOSFET (SO-8)

Siliconix Si9407AEYR1 1 150k Ohm 5% resistor (0603) R2 1 27k Ohm 5% resistor (0603) R3 1 33k Ohm 5% resistor (0603) R4 1 0.1 Ohm 0.25W 5% resistor (1210) R5 1 121k Ohm 1% resistor (0603) R6 1 10.0k Ohm 1% resistor (0603) U1 1 MAX1846EUB (10-uMAX)

V+

VL

FREQ

COMP

REF

GND

FB

PGND

CS

EXT1

2

3

4 5

6

7

8

9

10

U2

MAX1846

C13

22uF

6V

X5R

C11

0.47uF

C15

22nF

C19

0.1uF

C18

22uF

6V

X5R

P2

FDS6685

35mOhm

D2

EC21

QS03L

L2

22uH

DO3316P

85mOhmR11

150k

(300kHz)R2

6.8kR12

0.05

0.25W

R13

42.2k

1%

R14

10.0k

1%

4.5V to 5.5V

VIN

-5.2V @ 0.5A

VOUT

1846-5h

RWY

1/28/04

C16

220pF

R16

100

C22

1000pF

R9

22k


5.00 0.0018 -5.24 0

4.47 0.71 -5.24 0.5 0.826

5.00 0.63 -5.24 0.5 0.832

5.53 0.56 -5.24 0.5 0.846

20MHz BW 100mVpp

BILL OF MATERIALS

4.5V to 5.5V Input

-5.2V @ 0.5A Output

1/28/04

1846-5h




C16 1 220pF ceramic capacitor (0805)


C13,C18 2 22uF 6V X5R ceramic capacitor (1210)




Nihon EC21QS03L

L2 1 22uH 2.6A Inductor

Coilcraft DO3316P-223


Fairchild FDS6685

R11 1 150k Ohm 5% resistor (0805)

R10 1 6.8k Ohm 5% resistor (0805)


R16 1 100 Ohm 5% resistor (0805)

R12 1 0.05 Ohm 0.25W 5% resistor (1210)

R13 1 42.2k Ohm 1% resistor (0805)

R14 1 10.0k Ohm 1% resistor (0805)

U1 1 MAX1846EUB (10-uMAX)

V+VL

FREQ

COMP

REFGND

FB

PGND

CS

EXT1

2

3

4

5

6

7

8

9

10

U1MAX1846

C410uF25V

C10.47uF

C233nF

C30.1uF

C7100uF10V

POSCAP

P1FDS668535mOhm

D1EC31QS03L

L122uH

UP3B-22049mOhm

R1150k

(300kHz)R215k

R50.0330.5W

R640.2k1%

R710.0k1%

+11.4V to +12.6VINPUT

-5V @ 1A

1846-5gRWY

12/12/01+11.4V to +12.6V into -5V @ 1A

C6330pF

R4100C51nF

R347k


-5V @ 1A Output12/12/01

1846-5gDESIGNATION QTY DESCRIPTIONC1 1 0.47uF ceramic capacitor (0805)C2 1 39nF ceramic capacitor (0805)C3 1 0.1uF ceramic capacitor (0805)C4 1 10uF 25V ceramic capacitor (1812)

Taiyo Yuden TMK432BJ106MMC5 1 1nF ceramic capacitor (0805)C6 1 330pF ceramic capacitor (0805)C7 1 100uF 10V tantalum capacitor

Sanyo POSCAP 10TPB100MD1 1 3.1A 30V Schottky diode

Nihon EC31QS03LL1 1 22uH 3A Inductor

Coiltronics UP3B-220P1 1 35m Ohm -30V P-ch MOSFET (SO-8)

Fairchild FDS6685R1 1 150k Ohm 5% resistor (0603) R2 1 15k Ohm 5% resistor (0603) R3 1 47k Ohm 5% resistor (0603) R4 1 100 Ohm 5% resistor (0603) R5 1 33m Ohm 1% 0.5W resistor (2010)R6 1 40.2k Ohm 1% resistor (0603)R7 1 10.0k Ohm 1% resistor (0603)U1 1 MAX1846EUB (10-uMAX)

VCC

LDO

FREQ

EXT

FB

U1MAX1856

CS+

GND

PGND

Q1 Si9410DY0.05 Ohms30V

R20.05

C31uF

REF

C20.1uF

R1200k

SYNC/SHDN\

C110uF25V

2

4

1

10

9 8

6

7

5

3

L16uH

CDRH6D28-6R0

+12VINPUT

R320k

C622uF10V

D2 1A 40VEC21QS04

- 5V OUT@ 400mA

01/05/00 -+12V to -5V at 400mA . This uses the MAX1856, an inductor, and a capacitor to make acharge pump inverter.

C40.22uF

Notes:Q1: Any logic-level (Ron rated at 5V) N-FET with similar ratings may besubstituted.

R45k

toREF pin

D1 2A 40VEC21QS04

C522uF10V

C71000pF

IN

VL

FREQ

COMP

REF

GND

FB

PGND

CS

EXT

1

5

6

8

10,11

16

12

13

14

15

U1

MAX1847

C5

10uF

25V

C1

0.47uF

C2

56nF

C4

0.1uF

C8

0.1uF

200V

P1

IRFR

6215

0.3 Ohm

D2

CMR1U

-04

T1

1:2

Lpri=6.1uH

VP4-0075

R3

150k

(300kHz)R4

7.5k

R7

0.02

1W

R8

402k

1%

R9

3.32k

1%

+13.5V to

+16.5V

VIN

-150V @

50mA

1847-150

RWY

12/19/01+13.5V to +16.5V into -150V @ 50mA

POL

SYNC

SHDN

2

3

4

R1

1M

SHDN

1,2,3,4

9,10,11,12

8 6

7,5

R5

68k

C7

470pF

SYNC

R2

100k

R6

100

C6

1nF

C3

150pF

D1

10MQ

100N


16.843 0.660 -150.8 0.05997 0.814

15.03 0.742 -150.8 0.05997 0.811

13.32 0.832 -150.8 0.05997 0.816

20MHz BW 1.95Vpp

BILL OF MATERIALS


-150V @ 50mA Output

12/19/01

1847-180






C5 1 10uF 25V ceramic capacitor (1210)

Taiyo Yuden TMK432BJ106MM



C8 1 0.1uF 200V PEN film capacitor (2420)

Panasonic ECWU2104JC9

D1 1 1.5A 100V Schottky diode

International Rectifier 10MQ100N

D2 1 1A 400V Ultrafast recovery diode

Central Semi CMR1U-04

P1 1 0.3 Ohm -150V P-ch MOSFET (D-PAK)

International Rectifier IRFR6215

R1 1 1M Ohm 5% resistor (0603)



R4 1 7.5k Ohm 5% resistor (0603)


R6 1 100 Ohm 5% resistor (0603)

R7 1 20m Ohm 1% 1W resistor (2512)


R9 1 3.32k Ohm 1% resistor (0603)

T1 1 1:2 Power transformer Lpri = 6.1uH

Coiltronics VP4-0075


V+

VL

FREQ

COMP

REF

GND

FB

PGND

CS

EXT1

2

3

4 5

6

7

8

9

10

U2

MAX1846

C13

22uF

6V

X5R

C11

0.47uF

C15

22nF

C19

0.1uF

C18

22uF

6V

X5R

P2

FDS6685

35mOhm

D2

EC21

QS03L

L2

22uH

DO3316P

85mOhmR11

150k

(300kHz)R2

6.8kR12

0.05

0.25W

R13

42.2k

1%

R14

10.0k

1%

4.5V to 5.5V

VIN

-5.2V @ 0.5A

VOUT

1846-5h

RWY

1/28/04

C16

220pF

R16

100

C22

1000pF

R9

22k


5.00 0.0018 -5.24 0

4.47 0.71 -5.24 0.5 0.826

5.00 0.63 -5.24 0.5 0.832

5.53 0.56 -5.24 0.5 0.846

20MHz BW 100mVpp

BILL OF MATERIALS

4.5V to 5.5V Input

-5.2V @ 0.5A Output

1/28/04

1846-5h










Nihon EC21QS03L




Fairchild FDS6685

R11 1 150k Ohm 5% resistor (0805)

R10 1 6.8k Ohm 5% resistor (0805)


R16 1 100 Ohm 5% resistor (0805)

R12 1 0.05 Ohm 0.25W 5% resistor (1210)

R13 1 42.2k Ohm 1% resistor (0805)

R14 1 10.0k Ohm 1% resistor (0805)


1846-12d

RWY

8/04/04

10

9

8

7

5

6

4

3

2

1IN

VL

FREQ

EXT

CS

PGND

FB

COMP

REF

GND

U2

MAX1846

P2

FDN

304P

R9

22k

L2

15uH

R12

0.05

D2

EC10

QS03L

C17

47uF

16V

TQC

C18

1uF

16V

X5R

R13

97.6k

R14

10.0kC20

1nF

C19

0.1uF

R10

27k

C15

68nF

R11

75k

(500kHz)

C11

0.47uF

4.5V to 5.5V

VIN

-12V@200mA

VOUT

C12

10uF

10V

X5R

C16

100pF

R16

100

C22

1nF


5.01 0.0049 -12.16 0

4.48 0.6595 -12.15 0.203 0.835

5.00 0.5902 -12.15 0.203 0.836

5.51 0.5358 -12.15 0.203 0.835

70mVpp

BILL OF MATERIALS

4.5V to 5.5V Input

-12V @ 200mA Output

8/04/04

1846-12d




Taiyo Yuden LMK325BJ106MN



C17 1 47uF 16V 70mOhm polymer capacitor

Sanyo 16TQC47M

C18 1 1uF ceramic capacitor (0805)

Taiyo Yuden EMK212BJ105MG


C20,C22 2 1nF ceramic capacitor (0603)


Nihon EC10QS03L


Coilcraft DT3316P-153

P1 1 50m Ohm -30V P-ch MOSFET (SOT-23)

Fairchild FDN304P




R12 1 0.05 Ohm 0.25W 5% resistor (1206)

R13 1 97.6k Ohm 1% resistor (0603)

R14 1 10.0k Ohm 1% resistor (0603)

R16 1 100 Ohm 5% resistor (0603)


VCC

LDO

FREQ

EXT

FB

U1

MAX1856

CS+

GND

PGND

N1

IRLL2705

0.05 Ohms

55V

R6

0.033

C9

1uF

25V

C11

1uF

10V

REF

C13

1000pF

R8

150k

SYNC/

SHDN\

C3,C4

2x 10uF

25V

2

4

1

10

9 8

6

7

5

3

T1: Lpri = 16.7uH

1:2:2:2.7

DTPH1000-0002

+12V

T1

Secondary

R11

787k

1%C1

22uF

100V

MV-AX

D1

CMR1U-04

- 80V OUT

@ 120mA

2/15/02 - RWY

+12V to -24V at 60mA, -80V at 120mA . This uses the MAX1856 and a transfomer (that

will need about a 1:2:2:2.7 turns ratio) to make a flyback converter.

C12

2.2uF

1 2

12 11

4958

Notes:

T1: DT Magnetics DTPH1000-0002 or equivalent. The general specs are:

Primary L = about 16.7uH (not critical), Primary current rating = >3Amps, Turns ratio 1:2:2:2.7.

Q1: Any logic-level (Ron rated at 5V) N-FET with similar ratings may be substituted.

C5: Compensates for output capacitor ESR zero, if necessary.

R13: Controls leakage energy when -24V output has no load, if necessary.

67

D2

CMR1U-02 -24V

@ 60mAC2

100uF

35V

MV-AX

R10

374k

1%

R7

100

C10

1000pF

to MAX1856

REF pin

R9

5.1k

1%

R5

10

R1

200

0.5W

C5

100pF

200V

C8

470pF

50VR4

10

R13

24.9k

Vin Iin VOUT1 IOUT1 VOUT2 IOUT2 Efficiency

12.049 0.005 -79.72 0 -23.836 0

12.032 0.178 -79.61 0 -22.926 0.06031

12.000 0.950 -78.41 0.1203 -23.874 0

10.777 1.209 -78.37 0.1203 -23.507 0.06033 0.832

12.001 1.089 -78.45 0.1203 -23.533 0.06033 0.831

13.228 0.994 -78.52 0.1203 -23.558 0.06033 0.826

BILL OF MATERIALS


-24V @ 60mA, -80V @ 120mA Output

2/15/02

1856-80



Sanyo 100MV22AX


Sanyo 35MV100AX



C5 1 100pF 200V ceramic capacitor (0805)

C6,C7 0 Not installed



Taiyo Yuden TMK316BJ105ML

C10,C13 2 1000pF ceramic capacitor (0805)



C12 1 2.2uF 10V ceramic capacitor (0805)


D1 1 1A 400V Ultra-fast recovery diode




N1 3.8A 55V N-channel MOSFET (SOT-223)

International Rectifier IRLL2705

R1 1 200 Ohm 5% resistor (2512)

R2,R3 0 Not installed

R4,R5 2 10 Ohm 5% resistor (1206)

R6 1 33m Ohm 1% 0.5W resistor (2010)

Dale WSL 2010 0.033Ω 1%

R7 1 100 Ohm 5% resistor (0805)


R9 1 5.11k Ohm 1% resistor (0805)

R10 1 374k Ohm 1% resistor (0805)

R11 1 787k Ohm 1% resistor (0805)


T1 1 1:2:2:2.7 Power Transformer Lpri = 16.7uH

DT Magnetics DTPH1000-0002


V+

VL

FREQ

COMP

REFGND

FB

PGND

CS

EXT1

5

6

7

8,9

10

11

12

14

15

MAX1847

C422uF10V(3x)

C10.47uF

C20.22uF

C30.1uF

C510uF25V(2x)

P1IRF7700

24mOhm

D1HRF502A

L110uHCDRH127-10021mOhm

R3130k

(300kHz)

R41.8k

R50.021W

R695.3k1%

R710.0k1%

+3V to +6VINPUT

-12V @0.6A

RWY05/11/01 +3V to -12V @ 0.6A

POL

SYNC

SHDN

2

3

4

R1100k

R2100k

JU1

VL

SYNC

SHDN

REF

IN

VL

FREQ

COMP

REFGND

FB

PGND

CS

EXT1

5

6

8

10,11

16

12

13

14

15

U1MAX1847

C54.7uF25V

C10.47uF

C239nF

C40.1uF

C80.1uF200V

P1IRFR9120

0.6 Ohm

D2CMR1U

-04

T11:2

Lpri=48.8uHVP1-0190

R3150k

(300kHz)R433k

R70.1

R8402k1%

R92.74k1%

+13.5V to+16.5V

VIN

-180V @5mA

1847-180RWY

12/19/01+13.5V to +16.5V into -180V @ 5mA

POL

SYNC

SHDN

2

3

4

R11M

SHDN

2

6

4 7

9,118,10

R568k

L1330uH

1008PS-334M

C90.1uF200V

C7470pF

SYNC

R2100k

3,5

1,12

C339pF

C61nF

D110MQ100N

R6100

Vin Iin Vout Iout Efficiency16.67 0.09311 -182.6 0.006066 0.71415.05 0.1040 -182.6 0.006066 0.70813.33 0.1153 -182.6 0.006066 0.721

56mVpp


-180V @ 5mA Output12/19/01

1847-180DESIGNATION QTY DESCRIPTIONC1 1 0.47uF ceramic capacitor (0805)C2 1 0.22F ceramic capacitor (0805)C3 1 39pF ceramic capacitor (0805)C4 1 0.1uF ceramic capacitor (0805)C5 1 4.7uF 25V ceramic capacitor (1210)

Taiyo Yuden TMK325BJ475MNC6 1 1nF ceramic capacitor (0805)C7 1 470pF ceramic capacitor (0805)C8,C9 2 0.1uF 200V PEN film capacitor (2420)

Panasonic ECWU2104JC9D1 1 1.5A 100V Schottky diode

International Rectifier 10MQ100ND2 1 1A 400V Ultrafast recovery diode

Central Semi CMR1U-04L1 1 330uH Inductor

Coilcraft 1008PS-334MP1 1 0.6 Ohm -100V P-ch MOSFET (D-PAK)

International Rectifier IRFR9120R1 1 1M Ohm 5% resistor (0603) R2 1 100k Ohm 5% resistor (0603) R3 1 150k Ohm 5% resistor (0603) R4 1 33k Ohm 5% resistor (0603) R5 1 68k Ohm 5% resistor (0603) R6 1 100 Ohm 5% resistor (0603) R7 1 0.1 Ohm 1% 0.5W resistor (2010)R8 1 402k Ohm 1% resistor (1206)R9 1 2.74k Ohm 1% resistor (0603)T1 1 1:2 Power transformer Lpri = 48.8uH

Coiltronics VP1-0190 U1 1 MAX1847EEE (16-QSOP)

V+

VL

FREQ

COMP

REFGND

FB

PGND

CS

EXT1

3

4

5

10,11

6

12

13

14

15

MAX1847

C24.7uF25V

C10.47uF

C568nF

C90.1uF

C810uF10V

P1FDS6685

35mOhm

D1EC21QS03L

L147uHCDRH127-470

R4150k

(300kHz)R31.2k

R50.050.5W

R640.2k1%

R710.0k1%

+7.5V to+13.5VINPUT

-5V @0.5A

1847-5RWY

02/11/02+7.5V to +13.5V into -5V @ 0.5A

POL

SYNC

SHDN

2

16

8

R?100k

R?100k

JU1

VL

SYNC

SHDN

REF

C62.2nF

R247k

Vin Iin Vout Iout Efficiency10.508 0.001 -5.0058 07.486 0.387 -5.0029 0.5003 0.86410.509 0.280 -5.0032 0.5003 0.85113.529 0.223 -5.0037 0.5003 0.830

50mVpp

BILL OF MATERIALS 7.5V to 13.5V Input -5V @ 0.5A Output

2/12/021847-5DESIGNATION QTY DESCRIPTIONC1 1 0.47uF ceramic capacitor (0805)C2 1 4.7uF 25V ceramic capacitor (1210)

Taiyo Yuden TMK325BJ475MNC5 1 68nF ceramic capacitor (0805)C6 1 2.2nF ceramic capacitor (0805)C8 1 10uF 10V ceramic capacitor (1210)

Taiyo Yuden LMK325BJ106MNC9 1 0.1uF ceramic capacitor (0805)D1 1 2A 30V Schottky diode

Nihon EC21QS03LL1 1 47uH 2A Power inductor

Sumida CDRH127-470P1 1 35m Ohm -30V P-FET (SO-8)

Fairchild FDS6685R2 1 47k Ohm 5% resistor (0805) R3 1 1.2k Ohm 5% resistor (0805) R4 1 150k Ohm 5% resistor (0805) R5 1 50m Ohm 1% 0.5W resistor (2010)R6 1 40.2k Ohm 1% resistor (0805)R7 1 10.0k Ohm 1% resistor (0805)U1 1 MAX1847EEE (16-QSOP)

5/7/02SD MAXIM INTEGRATED PRODUCTS

MAX1856 11V to 14VVIN to -64Vout @0.35A


DESIGNATION QTY DESCRIPTIONC1A, C1B, C1C, C1D 4 10F, 25V X5R ceramic capacitor (1812)

Taiyo Yuden TMK432BJ106MMC2, C5 2 1F ceramic capacitor (0805).

Taiyo Yuden EMK212BJ105MGC3 1 220F, 100V capacitor (through hole)

Sanyo 100MV220AXC6 1 2.2 F, 10V ceramic capacitors (1206)

Taiyo Yuden LMK316BJ225MDC7 1 1000 pF, X7R ceramic capacitor (0805)C10 1 220 pF, 200V through hole capacitorD2 1 1A, 200V ultrafast rectifier

Central Semiconductor CMR1U-02N1 1 N-channel MOSFET

International Rectifier IRLR2905R1 1 0.012 , 1W sense resistor ( 2512)R4 1 100k , 5% resistor (0805)R5 1 270, 2W, power resistor (through hole)R7 1 287 k, 1% resistor (0805)R8 1 5.62 k, 1% resistor (0805)T1 1 Coiltronics transformer (VP5-0083)U1 1 MAX1856EUB (10-pin MAX)

No-load Output Voltage:Vin V Vout V10.998 -63.8312.004 -63.8212.504 -63.8213.209 -63.82

14 -63.82

Efficiency: (@ full Load = 0.35A)Vin V Iin A Vout V Iout A Eff%

14 1.949 62.87 0.353 81.3413.195 2.073 62.81 0.355 81.5212.503 2.189 62.8 0.355 81.4612.01 2.292 62.79 0.356 81.21

11 2.51 62.77 0.357 81.16

Schematics:

VCC

LDO

FREQ

EXT

FB

U1MAX1856

CS+

GND

PGND

N1 IRLR29050.0455V

R10.012

C21uF

REF

R4100k

SYNC/SHDN\

C1D10uF25V

2

4

1

10

9 8

6

7

5

3

+11Vto

+14V

T1Secondary

D2, 1A 200VUltrafastRectifier

CMR1U-02

- 64V VOUT@ 350mA

C62.2uF

R85.6k1%

toREF pin

C51uF

4958

R7287k1%

R5150

C10220pF200V

JumperJU

freq=500kHz

1

12

C71000 pF

C1C10uF25V

T1: Coiltronics VP5-0083, EFD20 core (AL=83 nH/sq. T)

Lpri =5.3uH,Turns ratio= 1:5;

5/6/2002 - +11V- +14V to-64V @350mA. This uses the MAX1856 and a transfomer (that will needabout a 1 to 5 turns ratio) to make a flyback converter.

Notes:T1: Coiltronics or equivalent. The general specs are: Primary L = 6uH (notcritical), Primary current rating = >7Amps, Turns ratio 1:5.N1: Any logic-level (Ron rated at 5V) N-FET with similar ratings may besubstituted.Output ripple is 100mV max.

C3220uF100VSanyoMV-AX

C1B10uF25V

C1A10uF25V

7 6 10 113 2

VCC

LDO

FREQ

EXT

FB

U1

MAX668

CS+

GND

PGND

Q1

Fairchild

NDT410EL

Q2

CMPT8099

R3

0.33

R2

27 Ohms

D1

12V

zener

R1

47k

C2

0.1

C5

1uF REF

C7

0.01

- 48V INPUT

R4

240k

SHDN

C1

10uF

63V

2

4

1

10

9 8

6

7

5

3

T1

Coiltonics CTX200-1

Primary

R5

10k

R3

1k

U2

MAX

4130

to MAX668

LDO pin

T1

Secondary

R6

96k

C3

47uF

D2 1N4448 -60V OUT

100mA

4/23/99 - LHS

-48V to -60V at 100mA. This design in effect adds a regulated -12V to the -48V input so if

the input changes, the output changes by the same amount.

C6

0.22

Circuit Notes:

1) Output current was tested up to 150mA

2) D1, D2, and Q2 are from Central Semiconductor but any similar devices will work fine.

3) Q1 is a 0.25 Ohm 100V NFET

4) D1 (12V zener) part # from Central Semi is CMP25242B

5) C1 needs to be only 10uF but we did not have any small values at 63V, so a 120uF

capacitor is used in this example.

6) This design adds a regulated -12V to the -48V input so if the input changes the output

changes by the same amount.

90% Efficient Inverting DC-DC Generates –12V Bus from 12V Input

IN

VL

FREQ

COMP

REFGND

FB

PGND

CS

EXT1

3

4

5

10,11

6

12

13

14

15

U1MAX1847

C210uF25V

C10.47uF

C510nF

C90.1uF

C81uF16V

P1FDS6685

30mOhm

D1EC21

QS03L

L147uHCDRH

125-47075mOhm

R4150k

(300kHz)R362k

R50.050.5W

R695.3k1%

R710.0k1%

10.8V to 13.2VINPUT

-12V @0.5A

1847-12bRWY

08/26/03

POL

SYNC

SHDN

2

16

8

JU1

VL

SYNC

SHDN

REF

C101nF

C211nF

R15100

C610pF

C747uF16VTPB

Vin Iin Vout Iout Efficiency 12.00 0.0011 -11.89 0 10.77 0.61 -11.88 0.501 0.906 12.00 0.55 -11.88 0.501 0.902 13.25 0.50 -11.88 0.501 0.898 20MHz BW 250mVpp

90% Efficient Inverting DC-DC Generates –12V Bus from 12V Input

BILL OF MATERIALS 10.8V to 13.2V Input -12V @ 0.5VOutput

8/26/03 1847-12b DESIGNATION QTY DESCRIPTION C1 1 0.47uF ceramic capacitor (0603) C2 1 10uF 25V X5R ceramic capacitor (1812)

Taiyo Yuden TMK432BJ106MM C5 1 10nF ceramic capacitor (0603) C6 1 10pF ceramic capacitor (0603) C7 1 47uF 16V polymer capacitor

Sanyo 16TPB47M C8 1 1uF 16V X5R ceramic capacitor (1206)

Taiyo Yuden EMK316BJ105ML C9 1 0.1uF ceramic capacitor (0603) C10,C21 2 1nF ceramic capacitor (0603) D1 1 2A 30V Schottky diode

Nihon EC21QS03L L3 1 47uH 1.8A Inductor

Sumida CDRH125-470 P2 1 30m Ohm -30V P-ch MOSFET (SO-8)

Fairchild FDS6685 R2 1 22k Ohm 5% resistor (0603) R3 1 62k Ohm 5% resistor (0603) R4 1 150k Ohm 5% resistor (0603) R5 1 0.05 Ohm 0.25W 5% resistor (1210) R6 1 95.3k Ohm 1% resistor (0603) R7 1 10.0k Ohm 1% resistor (0603) R15 1 100 Ohm 5% resistor (0603) U4 1 MAX1847EEE (16-QSOP)

VoIP SLIC Supply

VCC

LDO

FREQ

EXT

FB

U1MAX1856

CS+

GND

PGND

Q1IRLL27050.05 Ohms55V

R30.06

C21uF25V

C61uF10V

REF

C51000pF

R2200k

SYNC/SHDN\

C110uF25V

2

4

1

10

9 8

6

7

5

3

T1: CoiltronicsEF12.6 CoreLpri = 35uH

+12V

T1Secondary

R4365k1%

C312uF100VMV-AX

D2CMR1U-02

- 65V OUT100mA

7/19/01 - RWY - 1856-24c+12V to -24V at 52mA, -65V at 100mA . This uses the MAX1856 and a transfomer (thatwill need about a 1:2:2:1.5 turns ratio) to make a flyback converter.

C72.2uF

1 2

10 9

3847

Notes:T1: Coiltronics SG7 core (EF12.6) or equivalent (95nH/N*N). The general specs are:Primary L = about 35uH (not critical), Primary current rating = >1.5Amps, Turns ratio 1:2:2:1.5.Q1: Any logic-level (Ron rated at 5V) N-FET with similar ratings may be substituted.C5: Compensates for output capacitor ESR zero, if necessary.

56

D1MBRS1100 -24V

52mAC4

33uF35V

MV-AX

R5365k1%

R7100

C81000pF

to MAX1856REF pin

R65.1k1%

R110

R870

0.5W

C9100pF200V

Transformer design:Layer 1: Pin 5 to pin 6 – 34 turns #34AWGLayer 2: Pin 1 to pin 10 – 17 turns #28AWGLayer 3: Pin 4 to pin 7 – 34 turns #34AWGLayer 4: Pin 2 to pin 9 – 17 turns #28AWGLayer 5: Pin 3 to pin 8 – 22 turns #34AWG

Snubber (R8, C9) needs adjustment in circuit.

SLIC SUPPLY BILL OF MATERIALS12V Input

-24V @ 52mA or –65V @ 100mA Output07/19/01

1856-24cDESIGNATION QTY DESCRIPTIONC1 1 10uF 25V ceramic capacitor (1812)

Taiyo Yuden TMK432BJ106MMC2 1 1uF 25V ceramic capacitor (1206)

Taiyo Yuden TMK316BJ105MLC3 1 12uF 100V aluminum electrolytic

Sanyo 100MV12AXC4 2 33uF 35V aluminum electrolytic cap

Sanyo 35CV33AXC5,C8 2 1000pF ceramic capacitor (0805)C6 1 1uF 10V ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MGC7 1 2.2uF ceramic capacitor (0805)

Taiyo Yuden LMK212BJ225MGC9 1 100pF 200V ceramic capacitor (radial)D1 1 1A 100V Schottky diode

Motorola MBRS1100D2 1 1A 200V Ultra-fast recovery diode

Central Semi CMR1U-02N1 1 50m Ohm 55V MOSFET (SOT-223)

IRLL2705R1 1 10 Ohm 5% resistor (0805)R2 1 200k Ohm 5% resistor (0805)R3 1 0.06 Ohm 0.5W resistor (2010)

Dale WSL-2010-R060FR4,R5 2 365k Ohm 1% resistor (0805)R6 1 5.11k Ohm 1% resistor (0805)R7 1 100 Ohm 5% resistor (0805)R8 1 70 Ohm 0.5W 5% resistor (axial)T1 1 1:2,2,1.5 transformer

Coiltronics SG7Core Lpri = 35uHU1 1 MAX1856EUB (10-uMAX)

VCC

LDO

FREQ

EXT

FB

U1MAX1856

CS+

GND

PGND

Q1FDS6612A0.03 Ohms30V

R30.03

C21uF6.3V

REF

C52200pF

R2200k

SYNC/SHDN\

C12x 22uF

10V

2

4

1

10

9 8

6

7

5

3

T1: TDKRM4

Lpri=8.5uH

+5V

T1Secondary

R4536k1%

C35.6uF100VMV-AX

D2MURS120

- 72V @60mA

2/6/01 - RWY+5V to -24V at 150mA, -72V at 60mA . This uses the MAX1856 and a transfomer (thatwill need about a 1:2:2:2 turns ratio) to make a flyback converter.

C60.22uF

1 2

12 11

4958

Notes:T1: TDK RM4 core or equivalent. The general specs are:Lpri = about 8.5uH (not critical), Primary current rating = >3.5Amps, Turns ratio 1:2:2:2. P: 8Turns #32AWG tri-filar S1: 40Turns #38AWG S2: 40Turns #38AWG S3: 40Turns #38AWGQ1: Any logic-level (Ron rated at 5V) N-FET with similar ratings may be substituted.

67

D1MBRS1100 -24V @

150mAC4

33uF35V

MV-AX

R5909k1%

R7100

C71000pF

to MAX1856REF pin

R65.11k1%

R110

R870

0.5W

C8100pF100V

2/06/2001RWY MAXIM INTEGRATED PRODUCTS

Int01Q3a_bom / 1856-24b

MAX1856 5VIN to -72Vout @60mA or –24V@150mA


DESIGNATION QTY DESCRIPTIONC1A, C1B 2 22µF, 10V X5R ceramic capacitor (1812)

Taiyo Yuden LMK432BJ226MMC2 1 1µF 6.3V ceramic capacitor (0603)

Taiyo YudenJMK107BJ105MAC3 1 5.6µF 100V Electrolytic capacitor (through hole)

Sanyo 100MV5.6AXC4 1 33µF 35V Electrolytic capacitor (through hole)

Sanyo 35MV33AXC5 1 2200 pF X5R ceramic capacitor (0603)C6 1 0.22 µF X5R ceramic capacitor (0603)C7 1 1000pF X5R ceramic capacitor (0603)C8 1 100 pF, 100V ceramic capacitor (0805)D1 1 1A, 100V Schottky rectifier

On Semiconductor MBRS1100D2 1 1A, 200V ultrafast rectifier

On Semiconductor MURS120Q1 1 30 mOhm 30V N-channel MOSFET

Fairchild FDS6612A (SO-8)R1 1 10 Ω, 5% resistor (0603)R2 1 200k Ω, 5% resistor (0603)R3 1 0.03 Ω, sense resistor ( 1206)R4 1 536k Ω, 1% resistor (0603)R5 1 909k Ω, 1% resistor (0603)R6 1 5.11 kΩ, 1% resistor (0603)R7 1 100 Ω, 5% resistor (0603)R8 1 70 Ω, 5%, 0.5W, resistor (2010)T1 1 Custom transformer (TDK RM4 core)U1 1 MAX1856EUB (10-uMAX)

R8

499k

R5

0.025

R1

226k

R7

10

5V INPUT

-24V @ 100mA

-72V

@ 25mA

C1

100uF

50V

C2

100uF

100V

C9

22uF

10V

C8

0.1uF

C11

1uF

C12

0.22uF

T1

Coiltronics

SG3-0138

1:5:5:5:0.71

D1

MBRS1100

D2

MURS120

Q1

IRF7401

U4

MOC207

3

4

10

1

9 8

6

7

2

5

FREQ GND

REF

SHDN

LDO

VCC EXT

CS+

PGND

FB

U1

MAX668

668 ISO Supply

5 Jan 00 RWY

4

3

10

9

8

7

11

1

5

43

2

12

U2

MAX8867

EUK33

R2

12.4k

R4

120

R3

2k

U3

TLV431

-24V

+3.3V@

100mA

C7

0.1

C3

10uF

10V

C4

1uF

10V

C5

0.01uFC6

1uF

10V

D3

MBRS140

1 5

5

5

0.86

6

5

1

2

ISOLATION

R6

10

C10

0.01uF

C13

0.47uF

R9

10k

Vin (V) Iin (mA) Vo (V) Io (mA) Vo (V) Io (mA) Vo (V) Io (mA) Eff. (%)

4.50 1.27 24.01 100.2 73.2 25.2 3.28 103.9 80.3

5.01 1.138 24.01 100.2 73.2 25.2 3.28 103.9 80.5

5.50 1.038 24.01 100.2 73.2 25.2 3.28 103.9 80.4

MAX1856 12VIN to -80Vout @0.25A and –[email protected]


DESIGNATION QTY DESCRIPTIONC1A, C1B, C1C, C1D 4 10F, 25V X5R ceramic capacitor (1812)

Taiyo Yuden TMK432BJ106KMC2, C5 2 1F ceramic capacitor (1206).

Taiyo Yuden EMK316BJ105MFC3 1 100F, 200V capacitor (through hole)

Sanyo 200MV100FAZC4 1 330 F, 50V capacitor (through hole)

Sanyo50MV330AXC6 1 4.7 F, 10V ceramic capacitors (1206)

Taiyo Yuden LMK316BJ475MLC9 1 220 pF, 50V through hole capacitor C10 1 330 pF, 200V through hole capacitorD1, D2 2 1A, 200V ultrafast rectifier

General Semiconductor MURS120N1 1 N-channel MOSFET

Fairchild FDD3570 (TO-252)R1 1 0.013 , 1W sense resistor ( 2512)R4 1 100k , 5% resistor (0805)R5 1 100 , 2W, power resistor (through hole)R6 1 787 k, 1% resistor (0805)R7 1 374 k, 1% resistor (0805)R8 1 4.99 k, 1% resistor (0805)R9 1 33 , 2W, power resistor (through hole)T1 1 DT magnetics transformer (DTPH1000-0001)U1 1 MAX1856EUB (10-pin MAX)

Efficiency Measurements:VIN = 10.8V (-80V @ 250mA and –24V @ 120mA) = 74.4%VIN = 12V (-80V @ 250mA and –24V @ 120mA) = 73.3%VIN = 13.2V (-80V @ 250mA and –24V @ 120mA) = 72.3%

Cross-Regulation: VOUT1= -24V nominal; VOUT2 = -80V nominalVIN =10.8V (250mA load on VOUT2; no load on VOUT1) VOUT1 = -25.14V; VOUT2 = -80.7VVIN = 10.8V (no load on VOUT2; 120mA load on VOUT1) VOUT1 = -22.59V; VOUT2 = -82.69VVIN =12V (250mA load on VOUT2; no load on VOUT1) VOUT1 = -24.8V; VOUT2 = -80.9VVIN = 12V (no load on VOUT2; 120mA load on VOUT1) VOUT1 = -22.61V; VOUT2 = -82.7VVIN =13.2V (250mA load on VOUT2; no load on VOUT1) VOUT1 = -24.92V; VOUT2 = -80.9VVIN = 13.2V (no load on VOUT2; 120mA load on VOUT1) VOUT1 = -22.63V; VOUT2 = -82.8V

Schematics:

VCC

LDO

FREQ

EXT

FB

U1MAX1856

CS+

GND

PGND

N1 FDD35700.02 Ohms

80V

R10.013

C21uF

REF

R4100k

SYNC/SHDN\

C110uF25V(4x)

2

4

1

10

9 8

6

7

5

3

T1: EFD20Lpri = 3.9uH

+12V

T1Secondary

374k1%

C3100uF200V


MURS120 - 24V OUT@ 120mA

2/18/02+12V to -80V at 250mA, -24V @120mA. This uses the MAX1856 and a transfomer (thatwill need about a 1 to 7 turns ratio) to make a flyback converter.

C64.7uF

Notes:T1: Coiltronics EFD20 or equivalent. The general specs are: Primary L =3.9uH (not critical), Primary current rating = >7Amps, Turns ratio 1:7.N1: Any logic-level (Ron rated at 5V) N-FET with similar ratings may besubstituted.

9 4

1

12

R84.99k1%

toREF pin

2

11

C51uF

5867

C4330uF 50V

- 80V OUT@ 250mA

R6787k1%

R51002W

C10330pF200V

C9220pF50V

R933

2W


MURS120

JumperJ1

freq=500kHz

VCC

LDO

FREQ

EXT

FB

U1MAX1856

CS+

GND

PGND

Q1IRL540NS0.05 Ohms100V

R30.033

C21uF50V

C61uF10V

REF

C52200pF

R2200k

SYNC/SHDN\

C1100uF

35VMV-AX

2

4

1

10

9 8

6

7

5

3

T1: CoiltronicsSG3

Lpri=22uH

+10V to +25VINPUT

T1Secondary

R4232k1%

C322uF100VMV-AX

D2MURS120

- 62V OUT90mA

2/6/01 - RWY+10V to +25V into -25.5V at 80mA, -62V at 90mA, +38V @ 90mA . This uses theMAX1856 and a transfomer (that will need about a 1:2:3:3 turns ratio) to make a flybackconverter.

C70.22uF

1 2

12 11

49 58

Notes:T1: Coiltronics Standard Geometry Core SG3 or equivalent. The general specs are:Primary L = about 22uH (not critical), Primary current rating = >3Amps, Turns ratio 1:2:3:3.Q1: Any logic-level (Ron rated at 5V) N-FET with similar ratings may be substituted.

6 7

D1MBRS1100

-25.5V80mA

C4100uF35V

MV-AX

R5453k1%

R7100

C81000pF

to MAX1856REF pin

R65.11k1%

R110

R870

0.5W

C9100pF100V

D3MURS120

C1068uF63V

MV-AX

+38V90mA

VCC

LDO

FREQ

EXT

FB

U1

MAX1856

CS+

GND

PGND

N1

IRLR8503

18m Ohms

30V

R6

0.012

C9

1uF

10V

C11

1uF

10V

REF

C13

1000pF

R8

100k

SYNC/

SHDN\

C3,C4

3x 22uF

10V

2

4

1

10

9 8

6

7

5

3

T1: Lpri = 2uH

1:2.5:2.8:2.8

DTPH1000-0003

+5V

T1

Secondary

R11

365k

1%C1

22uF

100V

MV-AX

D1

CMR1U-04

- 80V OUT

@ 120mA

3/14/02 - RWY 1856-80b

+5V to -24V at 60mA, -80V at 120mA . This uses the MAX1856 and a transfomer (that

will need about a 1:2.5:2.8:2.8 turns ratio) to make a flyback converter.

C12

2.2uF

1 2

12 11

4958

Notes:

T1: DT Magnetics DTPH1000-0003 or equivalent. The general specs are:

Primary L = about 2uH (not critical), Primary current rating = >8Amps, Turns ratio 1:2.5:2.8:2.8.

Q1: Any logic-level (Ron rated at 5V) N-FET with similar ratings may be substituted.

C5: Compensates for output capacitor ESR zero, if necessary.

67

D2

CMR1U-02 -24V

@ 60mAC2

100uF

35V

MV-AX

R10

464k

1%

R7

100

C10

1000pF

to MAX1856

REF pin

R9

5.1k

1%

R5

10

R1

72

2W

C5

270pF

200V

C8

470pF

50VR4

10

R14

10

Vin Iin VOUT1 IOUT1 VOUT2 IOUT2 Efficiency

4.9992 0.007 -24.624 0 -81.5 0

4.9942 0.482 -23.509 0.0602 -82.0 0

5.0032 2.650 -24.626 0 -79.8 0.1203

4.4961 3.455 -24.173 0.0602 -80.2 0.1203 0.715

5.0007 3.087 -24.204 0.0602 -80.3 0.1203 0.720

5.511 2.810 -24.231 0.0602 -80.4 0.1203 0.720

BILL OF MATERIALS

4.5V to 5.5V Input

-24V @ 60mA, -80V @ 120mA Output

3/14/02

1856-80b



Sanyo 100MV22AX


Sanyo 35MV100AX


Taiyo Yuden LMK432BJ226MM




C9,C11 1 1uF 10V ceramic capacitor (0805)









N1 18mOhm 30V N-chan MOSFET (D-PAK)

International Rectifier IRLR8503

R1 1 72 Ohm 2W 5% resistor


R4,R5,R14 3 10 Ohm 5% resistor (0805)

R6 1 12m Ohm 1% 1W resistor (2512)

Dale WSL 2512 0.012Ω 1%

R7 1 100 Ohm 5% resistor (0805)


R9 1 5.11k Ohm 1% resistor (0805)

R10 1 365k Ohm 1% resistor (0805)

R11 1 4.64k Ohm 1% resistor (0805)

T1 1 1:2.5:2.8:2.8 Power Transformer Lpri = 2uH

DT Magnetics DTPH1000-0003


VCC

LDO

FREQ

EXT

FB

U1MAX1856

CS+

GND

PGND

N1IRLR850318m Ohms30V

R60.012

C91uF25V

C111uF10V

REF

C131000pF

R8100k

SYNC/SHDN\

C3,C43x 22uF

10V

2

4

1

10

9 8

6

7

5

3

T1: SG3-0138 coreLpri = 3uH1:2.5:3.75:3.75

+5V

T1Secondary

R11261k1%C1

22uF160VFAZ

D1CMR1U-04

- 100V OUT@ 75mA

1/29/02 - RWY+5V to -24V at 120mA, -100V at 75mA . This uses the MAX1856 and a transfomer (thatwill need about a 1:2.5:3.75:3.75 turns ratio) to make a flyback converter.

C122.2uF

1 2

12 11

4958

Notes:T1: Coiltronics SG4-0138 or equivalent. The general specs are:Primary L = about 3uH (not critical), Primary current rating = >6Amps, Turns ratio 1:2.5:3.75:3.75.Layer 1: (1-12) 6 turns trifilar #26AWGLayer 2: (4-9,5-8) 23 turns bifilar #36AWGLayer 3: (6-7) 15 turns #36AWGLayer 5: (2-11) 6 turns trifilar #26AWGQ1: Any logic-level (Ron rated at 5V) N-FET with similar ratings may be substituted.C5: Compensates for output capacitor ESR zero, if necessary.R13: Controls leakage energy when -24V output has no load, if necessary.

67

D2CMR1U-02 -24V

@ 120mAC2

100uF35V

MV-AX

R10681k1%

R7100

C101000pF

to MAX1856REF pin

R95.1k1%

R510

R11354W

C5270pF200V

C8470pF50V

R410

R1322k

R1410

Vin Iin VOUT1 IOUT1 VOUT2 IOUT2 Efficiency4.74 0.0346 -104.9 0 -23.375 04.74 1.1154 -108.0 0 -21.637 0.12094.75 2.4545 -98.0 0.0751 -25.215 04.74 3.3200 -104.0 0.0751 -22.753 0.1209 0.6715.00 3.1500 -104.0 0.0751 -22.807 0.1209 0.6715.26 3.0109 -104.0 0.0751 -22.839 0.1209 0.667

220mVpp 50mVpp


-24V @ 120mA, -100V @ 75mA Output1/29/02

1856-100DESIGNATION QTY DESCRIPTIONC1 1 22uF 160V aluminum electrolytic capacitor

Sanyo 160MV22FAZC2 1 100uF 35V aluminum electrolytic capacitor

Sanyo 35MV100AXC3,C4 3 10uF 2V X5R ceramic capacitor (1812)

Taiyo Yuden TMK432BJ106MMC5 1 270pF 200V ceramic capacitor (0805)C6,C7 0 Not installedC8 1 470pF 50V ceramic capacitor (0805) C9 1 1uF 25V ceramic capacitor (1206)

Taiyo Yuden TMK316BJ105MLC10,C13 2 1000pF ceramic capacitor (0805)C11 1 1uF 10V ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MGC12 1 2.2uF 10V ceramic capacitor (0805)

Taiyo Yuden LMK212BJ225MGD1 1 1A 400V Ultra-fast recovery diode

Central Semi CMR1U-04D2 1 1A 200V Ultra-fast recovery diode

Central Semi CMR1U-02N1 3.8A 55V N-channel MOSFET (SOT-223)

International Rectifier IRLL2705R1 1 135 Ohm 5% 4W resistor R2,R3 0 Not installedR4,R5,R14 2 10 Ohm 5% resistor (1206)R6 1 12m Ohm 1% 0.5W resistor (2010)

Dale WSL 2010 0.012 1%R7 1 100 Ohm 5% resistor (0805)R8 1 100k Ohm 5% resistor (0805)R9 1 5.11k Ohm 1% resistor (0805)R10 1 261k Ohm 1% resistor (0805)R11 1 681k Ohm 1% resistor (0805)R13 1 22k Ohm 5% resistor (0805)T1 1 1:2.5:3.75:3.75 Transformer Lpri = 3uH

Coiltronics SG3-0138 coreU1 1 MAX1856EUB (10-uMAX)

VCC

LDO

FREQ

EXT

FB

U1

MAX1856

CS+

GND

PGND

N1

IRLR2905

0.03 Ohms

55V

R6

0.025

C9

1uF

25V

C11

1uF

10V

REF

C13

1nF

R8

200k

SYNC/

SHDN\

C3,C4

2x 10uF

25V

2

4

1

10

9 8

6

7

5

3

T1: Lpri = 22uH

1:2:2:2

CTX01-14853

+12V

T1

Secondary

R11

649k

C1

12uF

100V

MV-AX

D1

CMR1U

-04 - 80V

@ 100mA

VOUT1

8/19/04 - RWY

+12V to -26V at 120mA, -53V at 120mA, -80V at 100mA . This uses the MAX1856 and a

transfomer (that will need about a 1:2:2:2 turns ratio) to make a flyback converter.

C12

2.2uF

1 2

12 11

4958

Notes:

R13: Controls leakage energy when -26V output has no load.

R14: Controls leakage energy when -53V output has no load.

67 D3

CMR1U

-02 -26V

@ 120mA

VOUT2

C2

47uF

50V

MV-AX

R10

665k

R7

100

C10

1nF

to MAX1856

REF pin

R9

5.1k

1%

R5

10

R1

200

0.5WC5

100pF

200V

C8

470pF

50VR4

10

R15

22k

D2

CMR1U

-02-53V

@ 120mA

VOUT3

C14

12uF

100V

MV-AX

R14

100k

R12

649k

Vin Iin Vout1 Iout1 Vout2 Iout2 Vout3 Iout3 Eff.

12.02 0.009 -80.62 0 -26.26 0 -53.37 0

10.79 0.97 -79.80 0.05 -25.98 0.06 -52.81 0.06 0.833

12.03 0.87 -79.89 0.05 -26.01 0.06 -52.85 0.06 0.834

13.23 0.80 -79.90 0.05 -26.03 0.06 -52.98 0.06 0.825

12.03 1.09 -79.30 0.1 -25.75 0.12 -53.30 0 0.840

12.02 0.92 -81.19 0 -25.54 0.12 -52.09 0.12 0.842

12.02 1.40 -79.49 0.1 -26.20 0 -52.53 0.12 0.847

BILL OF MATERIALS


-26V @ 120mA, -53V @ 120mA, -80V @ 120mA Output

8/19/04

1856-80c


C1,C14 2 12uF 100V aluminum electrolytic capacitor

Sanyo 100MV12AX


Sanyo 50MV47AX







Taiyo Yuden TMK316BJ105ML








D2,D3 1 1A 200V Ultra-fast recovery diode


N1 30mOhm 55V N-chan MOSFET (D-PAK)

International Rectifier IRLR2905

R1 1 200 Ohm 0.5W 5% resistor (2010)


R4,R5 2 10 Ohm 5% resistor (1206)

R6 1 25m Ohm 1% 0.5W resistor (2010)

Dale WSL 2010 0.025Ω 1%

R7 1 100 Ohm 5% resistor (0805)


R9 1 5.11k Ohm 1% resistor (0805)

R10 1 665k Ohm 1% resistor (0805)

R11,R12 2 649k Ohm 1% resistor (0805)

R14 1 100k Ohm 5% resistor (0805)


T1 1 1:2:2:2 Power Transformer Lpri = 22uH

Coiltronics CTX01-14853


CN 1 of 1

9/15/04

MAX8564 for Thomson’s Jupiter STB Chip Set

BOM for Figure 1:

Component QTY Description

U1 1 MAX8564EUB Dual LDO Controller

Q1/2 1 Dual MOSFET:30V, 55mΩ max at 4.5Vgs. Fairchild FSD6930A

ZD1 1 Zener Diode: 12V/500mW. Central: CMHZ5242B

C1, C3 2 Capacitor: 2.2uF/10V, X5R Ceramic

C2, C8 2 Capacitor: 0.1uF/16V, X7R Ceramic

C4, C7 2 Capacitor: 10uF/6.3V,X5R Ceramic

C5, C6 2 Capacitor: 1uF/6.3V,X7R Ceramic

R1 2 Resistor: 1.3Ω, 5%, 1206

R2 1 Resistor: 270Ω, 5%, 0603

R3 3 Resistor: 3.0Ω, 5%, 1206

R4 3 Resistor: 2kΩ, 1%, 0603

R5, R7 2 Resistor: 100Ω, 5%, 0603

R6, R10 2 Resistor: 499Ω, 1%, 0603

R8 1 Resistor: 4.53kΩ, 1%, 0603

R9 3 Resistor: 100kΩ, 5%, 1206

Please note that series resistors have been added to the Drains of the MOSFETs to

reduce the power dissipation of the MOSFETs. This allows the use of dual SO-8 for

2 outputs, instead of 2 single SO-8. Multiple 1/4W resistors in parallel are used

instead of a more costly higher power single resistor.

All components are labeled on schematic

DRV1

DRV2FB1

EN1

POK1

GND POK2

EN2

FB2

VDD

OUT1

2.5V/735mA

OUT2

5V/0.7A

3.3V+/-5% IN

6.5V+/-10% IN

C1

2.2uF

C2

0.1uF

C3

2.2uF

C4

10uF

C5

1.0uF

C6

1.0uF

C7

10uF

R4

2K R5

100R6

499R7

100

R8

4.53K

R10

499

Q1

1/2 FDS6930A

MAX8564

VDD

Q2

1/2 FDS6930A

C8

0.1uF

R9

100K

R1

2x1.3,

1/4W R3

3x3.0,

1/4W

ZD1

CMHZ5242B

9V to 15Vin

R2

270

High to turn on 3.3V

Power switch

VDD

Figure 1: Dual Outputs with Sequencing for STB Chip Set Power

U1

(Note: This file has been updated, 8/29/05)

Vin (DC) Iin (DC) Vout Iout1 Pin Pout Loss Eff

81 0.274 28.03 0.71 22.194 19.9013 2.2927 89.66973

100.8 0.217 27.81 0.71 21.8736 19.7451 2.1285 90.26909

120.2 0.185 27.83 0.72 22.237 20.0376 2.1994 90.10928

139.5 0.162 27.92 0.72 22.599 20.1024 2.4966 88.95261

160.8 0.144 28.08 0.73 23.1552 20.4984 2.6568 88.52612

165.6 0.14 28.12 0.73 23.184 20.5276 2.6564 88.5421

179.5 0.13 28.24 0.73 23.335 20.6152 2.7198 88.34455

191.6 0.124 28.32 0.74 23.7584 20.9568 2.8016 88.20796

OFFLINE LED DRIVER

120AC INPUT 28V @ 0.7A DC OUTPUT

MAX1847

87

88

89

90

91

92

93

94

95

80 90 100 110 120 130 140 150 160 170 180 190

INPUT VOLTS DC (After Rectification)

EFFICIENCY %

EFFICIENCY

MAX1847 OFFLINE LED DRIVER

120VAC Input

28V @ 0.7A Output

01/14/05


C12 1 330pF Ceramic Cap. NPO (0603)

C6 1 1000pF Ceramic Cap. NPO (0603)

C4, C7, C9 3 0.1uF 16V X7R Ceramic Cap. (0603)

Taiyo Yuden EMK107BJ104MA

C5 1 0.47uF 10V X7R Ceramic Cap. (0603)

Taiyo Yuden LMK107BJ474MA

C1, C2 2 1.0uF 250V X7R Ceramic Cap. (1812)

TDK C5750X7R2E105M


Taiyo Yuden GMK325BJ225MN


Taiyo Yuden EMK316BJ475ML

C11 1 100uF 250V Electrolytic Cap.

Sanyo 250MV100FAZ (Optional if 120HZ

ripple can be tollerated)

C3 1 220uF 16V Electrolytic Cap.

Sanyo 16MV220AX

D1 1 Diode, 100V 0.15A (SOT-23)

Central Semi, CMOD 4448

D2 1 Transorb, 12V (SMB)

Central Semi, 1SMB12A

D3 1 Transorb, 36V (1.5KE)

General Semi, 1N6284A

D4 1 Diode, 200V 1A (DO-41)

General Semi, UG1D

D5-D8 4 LED White, 5W, 700mA, 7 Volt

Luxeon LXHL-LW6C

L1 1 470uH, 2A Inductor, Toroid, Powder Iron

Talema, SWC-3.0-470

L2 1 Inductor, Common Mode

Delevan, 4222

N1 1 250V 2.5 Ohm N-Channel (SOT-223)

International Rec, IRFL214

R3 1 0.05 Ohm 1% resistor (0805)

Dale WSL0805 0.05 1.0%

R2 1 100 Ohm 1% resistor (0805)

R1 1 2.49k Ohm 5% resistor (0805)

R12 1 3.01 Ohm 5% resistor (0805)

R8 1 5k Potentimoeter, 10T

R5 1 41.2k Ohm 1% resistor (0805)



R7 1 470k Ohm 5% resistor (0.25W)

U1 1 High Efficiency, Current-Mode PWM

Controller (16 QSOP)

Maxim MAX1847EEE

U2 1 Rectifier, Bridge, 600V, 0.5A

Central Semi CBR1-D060S

V1, V2 2 Metal-Oxide Varistor 130VAC

Panasonic, EZR-V05D201

IN

BST

DH

LX

DL

PGND

FB

3.135V to 3.465V

INPUT

COMP

ILIM

C1

560pF

R1

27k

D1

CMPSH-3

C3

0.1uF

C7

22uF

6V

N1A

1/2

FDS

6898A

N1B

1/2

FDS

6898A

L1

0.68uH

DO3316P

-681HC

1953_1m8

RWY

2/07/03

2

3

1

7

6

9

8

10

5

U1

MAX1953 1.8V@4A

C5

22uF

6V

(2x)

R2

12.7k

R3

10.0k

GND4

C2

4.7uF

C6

1.2nF

C4

22uF

6V

(2x)

R4

2.7C8

22uF

6V


3.1299 0.0305 1.809 0

3.1444 2.5532 1.807 4.0037 0.901

3.3014 2.4320 1.808 4.0037 0.901

3.4724 2.3097 1.808 4.0036 0.902

20MHz BW 10mVpp

BILL OF MATERIALS


1.8V @ 4A Output

2/07/03

1953_1m8




Taiyo Yuden LMK316BJ475ML


C4,C5,C7,C8 6 22uF 6V X5R ceramic capacitor (1210)



D1 1 100mA 30V Schottky diode

Central Semi CMPSH-3

L1 1 0.68uH Power Inductor

Coilcraft DO3316P-681HC

N1 1 14m Ohm 20V Dual N-ch MOSFET (SO-8)

Fairchild FDS6898A


R2 1 12.7k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 2.7 Ohm 5% resistor (0805)


8543_3b3

RWY

12/20/04

13

11

15

3

12

4

9

10

14

VL

BST

COMP

IN

FB

PGND

DL

DH

LX

U1

MAX8543

10.8V to 13.2V

VIN

3.3V @ 2.5A

VOUT2

C1

0.1uF

16V

R3

47k

C8

470pF

N1A

1/2

FDS

6930A

L1

3.3uH

D1

CMSSH-3

C4

10uF

16V

X5R

R1

31.6k

R2

10.0k

C3

0.1uF

C6

22uF

6V

X5R

C2

4.7uF

6V

X5R

N1B

1/2

FDS

6930A

CS+

CS-

7

6

GND

ILIM1

SS

FSYNC

EN

16

2

8

1

5

R6

18.2k

(1MHz) C5

0.1uF

R4

470

C9

0.47uF

R5

470C10

0.47uFC11

100pF

EN3.3

VL

R7

200k

R8

100k

VL

R9

3.9

C12

330pF


12.00 0.0205 3.33 0

10.78 0.86 3.33 2.5 0.898

12.01 0.79 3.33 2.5 0.877

13.23 0.71 3.33 2.5 0.886

30mVpp

BILL OF MATERIALS


3.3V @ 2.5A Output

12/20/04

8543_3b3


C1,C3,C5 3 0.1uF ceramic capacitor (0603)


Taiyo Yuden JMK212BJ475MG


Taiyo Yuden EMK325BJ106MN

C6 1 22uF 6V ceramic cap (1206)

Taiyo Yuden JMK316BJ226ML


C9,C10 2 0.47uF 10V X5R ceramic capacitor (0603)




D1 1 100mA 30V Schottky diode (SOT-323)

Central Semi CMSSH-3

L1 1 3.3uH 4.3A Power Inductor

Toko FDV0630-3R3


Fairchild FDS6930A

R1 1 31.6k Ohm 1% resistor (0603)

R2 1 10.0k Ohm 1% resistor (0603)


R4,R5 2 470 Ohm 5% resistor (0603)

R6 1 18.2k Ohm 1% resistor (0603)



R9 1 3.9 Ohm 5% resistor (0603)


TFT Monitor

VP VLBST

DH

LX

DL

GND

OUT

FBPOK

10V to 20VINPUT

FB2

FB3

B2

B3

COMP

ILIM

C127nF

R120k

C21uF10V

D1CMPSH-3

C30.1uF

C4220uF25VHC

C11220uF10V

MV-AX

N11/2

Si9936

N11/2

Si9936

L133uHCDRH

127-330

1864_5dRWY

9/12/01

1

2

3

4

5

6

7

8

9

10

11

12

13

14

1516

U1MAX1864T

R310

R410

5V@1A

R530.9k

R610.0k

R13100k

VL

C54.7uF25VY5V

C64.7nF

VL

VL

Vin Iin Vout Iout Efficiency9.976 0.539 5.0558 1.005 0.94914.994 0.365 5.0564 1.005 0.92820.010 0.278 5.0570 1.005 0.914200mVpp 100mVpp

BILL OF MATERIALS10V to 20V Input 5V @ 1A Output

09/12/011864_5dDESIGNATION QTY DESCRIPTIONC1 1 27nF ceramic capacitor (0805)C2 1 1uF 10V ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MGC3 1 0.1uF ceramic capacitor (0805)C4 1 220uF 25V aluminum electrolytic capacitor

Sanyo 25MV220HCC5 1 4.7uF 25V Y5V ceramic capacitor (1206)

Taiyo Yuden TMK316F475MGC6 1 4.7nF ceramic capacitor (0805)C7 1 220uF 10V aluminum electrolytic capacitor

Sanyo 10MV220AXD1 1 100mA 30V Schottky diode

Central Semi CMPSH-3L1 1 33uH 3A Power inductor

Sumida CDRH127-330N1 1 50m Ohm 30V Dual MOSFET (8-SO)

International Rectifier IR7303R1 1 20k Ohm 5% resistor (0805)R2 1 100k Ohm 5% resistor (0805)R3,R4 2 10 Ohm 5% resistor (0805)R5 1 30.9 k Ohm 1% resistor (0805)R6 1 10.0k Ohm 1% resistor (0805)U1 1 MAX1864TEEE (16-QSOP)

Jinrong Qian, Corporate Application Engineer

With most regulators, it is usually difficult to generate an output voltage less than the reference voltage.This note describes a way to use the MAX1864 to achieve an output voltage less than its 1.236Vreference.

The MAX1864 includes a positive linear regulator gain block. With a few external resistors, it canachieve an output voltage below 1.236V. Fig. 1 shows the schematic of the implementation. Since thevoltage at FB pin is the reference voltage, a lower output voltage VOUT1 is obtained if a voltage (V2)higher than the reference voltage is generated. Due to the high input impedance at FB pin, if R5 is chosento be equal to R6, we have

V2-VFB = VFB-VOUT1,

This yields V2 = 2VFB-VOUT1.

To generate a 1.0V output voltage with VFB=1.236V, V2 should then be 1.472V. This can be achieved byproperly choosing the resistance of R8 and R9

8FB2

FB9 R

VV

VR

−= ,

if R8 = 10k, R9 will be 52.4k, Therefore, 1.0V output voltage is generated.

Fig. 1 Schematic of 1.0V power supply with MAX1864

IN VLBST

DH

LX

DL

GND

OUT

FBPOK

VOUT1: 1.0V@6A

+5V INPUT

FB2

FB3

B2

B3

COMP

ILIM

C118nF

R118k

C34.7uF10V

D1CMPSH-3

C40.1uF

C51200uF

10VMV-AX

C81uF10V

C7470uF

6VTANT(3x)

R7220

R8 10k

R952.4k

N1Si4410DY

N2Si440DY

L112uH

Q3CMPT3904

1

2

3

4

5

6

7

8

9

10

11

12

13

14

1516

U1MAX1864T

R3 4.7

R4 4.7

C9330pF

C2820pF

R2100k

+5V

POK

C1022uF10V

VL

R5 10.0k

R6 10.0k

R101k

VL

V2

IN VLBST

DH

LX

DL

GND

OUT

FBPOK

VOUT1: 1.0V@6A

+5V INPUT

FB2

FB3

B2

B3

COMP

ILIM

C118nF

R118k

C34.7uF10V

D1CMPSH-3

C40.1uF

C51200uF

10VMV-AX

C81uF10V

C7470uF

6VTANT(3x)

R7220

R8 10k

R952.4k

N1Si4410DY

N2Si440DY

L112uH

Q3CMPT3904

1

2

3

4

5

6

7

8

9

10

11

12

13

14

1516

U1MAX1864T

R3 4.7

R4 4.7

C9330pF

C2820pF

R2100k

+5V

POK

C1022uF10V

VL

R5 10.0k

R6 10.0k

R101k

VL

V2

VP VLBST

DH

LX

DL

GND

OUT

FBPOK

1.25V@6A

+5V INPUT

FB2

FB3

B2

B3

COMP

ILIM

C122nF

R115k

C34.7uF10V

D1CMPSH-3

C40.1uF

C51200uF

10VMV-AX

C81uF10V

C71200uF

2.5VOS-CON

R7220

R822.1k

R922.1k

N1FDS6690A

N2FDS6690A

L11.5uH

DO5022P

Q3CMPT3906

1864_1v2RWY

8/23/01

1

2

3

4

5

6

7

8

9

10

11

12

13

14

1516

U1MAX1864T

R34.7

R44.7

C9330pF

C622uF10V(4x)

C21000pF

R2100k

+5V

POK

C1022uF10V

+5V

+2.5V

C110.1uF

R510.0k

R610.0k

R111.00k

R121.00k

R10100

DDR Termination @ 6A

D2EC31

QS03L

D3EC31

QS03L

+1.24V

5V Input, 2.5V Reference1.25V @ ±6A Output

1864_1v2 10/22/01DESIGNATION QTY DESCRIPTIONC1 1 22nF ceramic capacitor (0805)C2 1 1nF ceramic capacitor (0805)C3 1 4.7uF 10V X7R ceramic capacitor (1206)

Taiyo Yuden LMK316BJ475MLC4,C11 2 0.1uF ceramic capacitor (0805)C5 1 1200uF 10Valuminum electrolytic capacitor

Sanyo 10MV1200AXC6,C10 5 22uF 10V ceramic capacitor (1812)

Taiyo Yuden LMK432BJ226MMC7 1 1200uF 2.5V organic semiconductor cap

Sanyo OS-CON 2R5SP1200MC8 1 1uF 10V X7R ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MGC9 1 330pF ceramic capacitor (0805D1 1 100mA Schottky diode (SOT-23)

Central Semi CMPSH-3D2,D3 2 3A 30V Schottky diode


Coilcraft DO5022P-152HCN1,N2 1 17m Ohm N-channel MOSFET (SO-8)

Fairchild FDS6690AQ3 1 200mA 40V PNP Transistor (SOT-23)

CMPT3906R1 1 15k Ohm 5% resistor (0805)R2 1 100k Ohm 5% resistor (0805)R3,R4 2 4.7 Ohm 5% resistor (0603)R5,R6 2 10.0k Ohm 1% resistor (0805)R7 1 220 Ohm 5% resistor (0805)R8,R9 2 22.1k Ohm 1% resistor (0805)R10 1 100 Ohm 5% resistor (0805)R11,R12 1 1.00k Ohm 1% resistor (0805)U1 1 MAX1864TEEE (16-QSOP)

VPBST

DH

LX

DL

GND

OUT

FB

POK

10.8V to 13.2VINPUT

FB2

FB3

B2

B3

COMP

ILIM

C115nF

R122.6k

C41.0uF10V

D1CMPSH-3

C30.1uF

C5-C7270uF16V

OS-CON(3x)

C8680uF6.3V

OS-CON

N1IRF7811W

N2IRF7811W

VL

1864_12BSM

9/27/01

1.0 to 5.5V @12A

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

U1MAX1864T

R4100kPOK

C222PF

R1024.9k1%

R1110.5k1%

C101.5nF

L12.2

HC2-2R2

C113.3nF

R1210

D2CMSH3-40

R222.6k1%

Vc=0V > Vo=5.5VVc=4.096V > Vo=1.0V

Vcon

Vout

Vin

N3IRF7811W

R81.0

R91.0

+

U2MAX503

REFIN

REFOUT

ROFS

AGND

DGND

REFGND

RFB

VOUT

VSS

VDD

+

C933uF

+5V

13

18

22

14

12

17

21

20

23

19

8D0-D7/D8-D9,

S0,S1

CLR

CS

WR

LDAC

2A0,A1

VL

GND

+5V

AGND

R1310

C120.1uF

1V to 5.5V @ 12A

10.8-13.2V Input1V to 5.5V @ 12A Output

09/26/011864_12BDESIGNATION QTY DESCRIPTIONC2 1 Cap 22pF 50V Ceramic NPO 0805,

Panasonic (ECJ-2CV1H220J)C10 1 Cap 1.5nF 50V Ceramic X7R 0805,

Panasonic (ECJ-2VB1H152K)C11 1 Cap 3.3nF 50V Ceramic X7R 0805,

Panasonic (ECJ-2VB1H332K)C1 1 Cap 15nF 50V Ceramic X7R 0805,

Panasonic (ECJ-2VB1H153K)C3,C12 2 Cap 0.1UF 25V X7R Ceramic 0805,

Panasonic (ECJ-2VB1E104K)C4 1 Cap 1.0uF 10V X7R Ceramic 0805,

Taiyoyuden (LMK212BJ105M)C9 1 Cap 33uF 6.3V Electrolytic, Sanyo

(6MV33HC)C5-C7 3 Cap 270 uF 16V OSCON,

Sanyo (16SP270M)C8 1 Cap 680 uF 6.3V OSCON,

Sanyo (6SP680M)D1 1 Diode 30V 0.1A Schottky SOT-23, Central

Semi (CMPSH-3)D2 1 Diode 40V 3A Schottky SMC, Centralsemi

(CMSH3-40)N1-N3 3 NFET 0.012 Ohm 30V SO-8, International

Rectifier (IRF7811W)R8,R9 2 Resistor 1.0 Ohm 5% 0805R12,R13 2 Resistor 10 Ohm 5% 1206R11 1 Resistor 10.5k Ohm 1% 0805R10 1 Resistor 24.9k Ohm 1% 0805R1,R2 2 Resistor 22.6k Ohm 1% 0805R4 1 Resistor 100k Ohm 5% 0805L1 1 Inductor, 2.2uH Coiltronics (HC2-2R2)U1 1 IC xDSL/Cable Modem Triple Output

Power Supplies 16 QSOP, Maxim(MAX1864TEEP)

U2 1 IC Low-Power, Parallel-Input Voltage-Output, 10-Bit DAC 24 SSOP, Maxim(MAX503CAG)

Base-Station

INBST

DH

LX

DL

PGND

FB

3.0V to 3.6V INPUT

COMP

ILIM

C1270pF

R147k

D1CMPSH1-4

C40.1uF

C622uF6V

(2x)

N11/2

FDS6898A

N11/2

FDS6898A

L10.33uH

DO3316P-331HC

1953_1b5RWY

3/04/02

2

3

1

7

6

9

8

10

5

U1MAX1953 1.5V@6A

C522uF6V

X5R(2x)

R28.87k

R310.0k

GND4

C25pF

C310uF

Efficiency Data Vin Iin Vout Iout Efficiency 3.2999 0.056 1.5121 0 2.9939 3.477 1.5097 6.003 0.870 3.2992 3.149 1.5091 6.003 0.872 3.6030 2.888 1.5103 6.003 0.871

BILL OF MATERIALS

3.0V to 3.6V Input 1.5V @ 6A Output

3/05/02 1953_1b5 DESIGNATION QTY DESCRIPTION C1 1 270pF ceramic capacitor (0603) C2 1 5pF ceramic capacitor (0603) C3 1 10uF 10V X5R ceramic capacitor (1210)

Taiyo Yuden LMK325BJ106MN C4 1 0.1uF ceramic capacitor (0603) C5,C6 4 22uF 6V X5R ceramic capacitor (1210)

Taiyo Yuden JMK325BJ226MM D1 1 0.1A 30V Schottky diode (SOT-23)

Central Semi CMPSH-3 L1 1 0.33uH 20A Power Inductor

Coilcraft DO3316P-331HC N1 1 14m Ohm 20V Dual N-ch MOSFET (SO-8)

Fairchild FDS6898A R1 1 47k Ohm 5% resistor (0603) R2 1 8.87k Ohm 1% resistor (0603) R3 1 10.0k Ohm 1% resistor (0603) U1 1 MAX1953EUB (10-uMAX)

12V input, 2.5V/20A output application: (VDDQ)

This circuit has been tested in the lab. The efficiency is about 88.5% at 20A output current. It should be noted that the prototype of this circuit is modified from the 7A VTT EV kit. The copper is only 1 Oz and the bottom two MOSFETs are stacked on top of each other due to single MOSFET layout. For a better layout, the efficiency will be better. The main component part numbers are: L1: HM73-301R0, 1uH/23A, C6: OS-CON, 4SP560M, C2: OS-CON, 16SG470M.

MAX1916

POK

V+

DDR

EN/HSD

REF

GND

ILIM

VTT

VTTR

PGND

VL

BST

DH

LX

DL

FSEL

L11.0uH/30A

C110uF16V

C40.47uF10V

12V

C22X470uF16V

C70.22uF/10V

Q1IRF7822

C510uF6.3V

C64X560uF4V

VOUT

VIN

PGND

C34.7uF6.3V

Q22XIRF7822

R1400k

D1CMPSH-3

2.5V at20A

R610k

Q32N7002K

R25.11k

R320k

5V

SDN

POK

R410k1%

R315k1%

R610k

VL

VL

6/19/02 From: Sudha Durvasula

MAX1917 Input: +2.25V to +2.75V; 12V available for V+ supply to chip Output: 1.25V (+/-3%); Maximum load=7A Bill of Materials: DESIGNATION QTY DESCRIPTION

C1, C2, C3 3 10 uF 25V ceramic capacitor Taiyo Yuden TMK432BJ106KM

C6, C7, C8, C9 4 270 µF 2V 15 mΩ Al electrolytic capacitors Panasonic EEFUE0E271R

C10, C11 2 10 uF 6.3V ceramic capacitors Taiyo Yuden JMK212BJ106MG

C12 1 0.47 µF, 25V ceramic capacitor Taiyo Yuden TMK316BJ474ML

C13, C14 2 0.47µF, 6.3V ceramic capacitors (0603) Taiyo Yuden JMK107BJ475MG

C15 1 4.7 µF 6.3V ceramic capacitor TAIYO YUDEN JMK212BJ475MG

C16, C17 2 1 µF 6.3V ceramic capacitor TAIYO YUDEN JMK107BJ105MA

D1 1 100 mA 30V Schottky diode Central Semiconductor CMPSH-3

L1 1 0.8µH (16A) Inductor Sumida CDEP105L-0R8

N1, N2 2 N-channel MOSFETs, 30V (RDS(ON) =9mΩ @VGS=4.5V) International Rectifier IRF7811W

Q1 1 N-channel MOSFET (SOT23) Central Semiconductor 2N7002

R1 1 54.9 kΩ , 1% resistor ( 0805) R2 1 5.1 kΩ , 5% resistor ( 0805) R3 1 100 kΩ , 5% resistor ( 0805) R4, R9 2 Short R6 1 10 kΩ , 5% resistor ( 0805) R7 1 10 kΩ , 1% resistor ( 0805) R8 1 2.49 kΩ , 1% resistor ( 0805) R10 1 20 kΩ , 1% resistor ( 0805) JU2 1 2 pin header J1 1 Scope probe connector U1 1 MAX1917EEE (16 pin QSOP) EFFICIENCY MEASUREMENTS: Vbias V Ibias A Vin V Iin A Vout V Iout A Eff. %

JU2 not installed (freq. = 300kHz) 12 0.015 2.2471 4.266 1.2344 7 88.48 12 0.016 2.4963 3.849 1.2354 7 88.24 12 0.015 2.7589 3.489 1.2364 7 88.26

JU2 installed (freq. = 550kHz) 12 0.028 2.2457 4.319 1.2266 7 85.56 12 0.028 2.5012 3.884 1.2271 7 85.46 12 0.028 2.7463 3.537 1.2278 7 85.52

Output Ripple: 10 mV max. Foldback Current Limit: Peak inductor current is limited to maximum of 2.05A in the event of a short at output.

Schematics:

VL

REF

GND

EN/HSD

PGND

U1 MAX1917

VTT

POK

8

2

11 1

4

13

C6-C9 (4x) 27 0uF

2V Panasonic

SPcap

R8 2.49k 1%

C13 0.47 uF

2.5V@10

6/19/2002 - Sudha Durvasula +2.25V - +2.75V to 1.25V @7A . This uses the MAX1917. It also has foldback currnet limiting.

R7 10k 1%

V in +2.25V

to+2.75V

C15 4.7uF 10V

L1 Sumida CDEP105L

0.8 uH

BST DH

DL

LX

14 15

12

16

C14 0.47 uF

N1 IRF7811W

Schottky Central

CMPSH-3 D1

V+ 10

N2 IRF7811W

ILIM

6 FSEL

5

7

DDR

VTTR 9

C16 1 uF (10V)

3

R4 short

R2 5.1k

JU2

JU3

EN

R6 10k

Q1 2N7002

R9 short

R3 100k

C1-(3x)

10uF,25V Taiyo Yuden

TMK432BJ106KM

C10-C11 10uF,6.3V

Taiyo Yuden JMK212BJ106M

C12 0.47 uF

C17 1 uF

V + +12V

JU4

R1 54.9k

R10 20k To

VOUT Float = 300kHz GND=550 kHz

MAX1917 Application Circuits 12/28/01

1

Generate DDR Memory Termination Voltages with MAX1917 using 3.3V Supply I. If the input voltage of the 2.5V or 1.5V dc-dc converter is 5V and is on the same board where

MAX1917 is located, use the following schematics for both 1.25V and 0.75V applications.

Figure 1 Schematics with 5V V+ supply available. Table I: Bill of Materials:

Comp. Description Comments C1, C7 1.0uF/6.3V ceramic capacitor, JMK107BJ105MA Taiyo Yuden

C2 2X220uF/4V POSCAP, 4TPA220M, or 2X330uF/6V tantalum capacitor, T510X337M006AS

SANYO Kemet

C3 4.7uF/10V ceramic capacitor, LMK316BJ475ML Taiyo Yuden C4, C8 0.47uF/10V ceramic capacitor, LMK107BJ474MA Taiyo Yuden

C5 10uF/6.3V ceramic capacitor, JMK316BJ106ML Taiyo Yuden C6 3X270uF polymer caps (Panasonic EEFUE0E271R) Panasonic C9 0.47uF/25V ceramic capacitor, TMK316BJ474ML Taiyo Yuden D1 30V/100mA Schottky diode, CMPSH-3S Central Semi. L1 0.68uH/9A, DO3316P681HC (esr, 5mΩ max) Coilcraft Q1 Si4808DY or Si4830DY Vishay Siliconix R1 348k, 1% R2 5.1k, 5% R3 20k, 5% IC1 MAX1917 MAXIM

MAX1916

POK

V+

DDR

EN/HSD

REF

GND

ILIM

VTT

VTTR

PGND

VL

BST

DH

LX

DL

FSEL

L10.68uH/5A

C11uF6.3VC4

0.22uF10V

2.5V or1.5V

C22X220uF4V

C80.47uF/10V

Q1Si4808DY

C510uF6.3V

C63X270uF2V

VOUT

SDN

VIN

VTTR

C71uF/6.3V

DDR

PGND

C34.7uF6.3V

R1348k

C90.47uF/10V

D1CMPSH-3S

5V

1.25V/3.5Aor 0.75V/3.5A

Q3

2N7002K

R25.1k

R320k

POK

Customer's logiclevel, 5V max

V+

2.5V or 1.5VReference Input


2

II. If the input voltage of the 2.5V or 1.5V dc-dc converter is 3.3V and is on the same board where MAX1917 is located, and also if the LX switching node is accessible, use the following schematics for both 1.25V and 0.75V applications. D2, C10 and C11 form a voltage doubler to double the 3.3V input voltage to feed the V+.

Figure 2 Schematics with a voltage doubler from the 2.5V or 1.5V dc-dc converter. Table II: Additional Bill of Materials over schematics in Figure 1:

Comp. Description Comments C10, C11 0.47uF/10V ceramic capacitor, LMK107BJ474MA Taiyo Yuden

D2 30V/100mA Schottky diode, CMPSH-3S Central Semi.

VDD SupplyController

3.3V

VOUT

VIN

PGND

Voltage doubler

D2CMPSH-3S

C100.47uF10V

VDD=2.5V or 1.5V

VDD SupplyConverter

MAX1916

POK

V+

DDR

EN/HSD

REF

GND

ILIM

VTT

VTTR

PGND

VL

BST

DH

LX

DL

FSEL

L10.68uH/5A

C11uF6.3VC4

0.22uF10V

2.5V or1.5V

C22X220uF4V

C80.47uF/10V

Q1Si4808DY C5

10uF6.3V

C63X270uF2V

VOUT

SDN

VIN

VTTR

C71uF/6.3V

DDR

PGND

C34.7uF6.3V

R1348k

C90.47uF/10V

D1CMPSH-3S

1.25V/3.5Aor 0.75V/3.5A

Q32N7002K

R25.1k

R320k

POK



C110.47uF10V

LXswitching node


3

III. If the input voltage of the 2.5V or 1.5V dc-dc converter is 3.3V the switching node, LX, is not

accessible, a charge pump, such as MAX1683, should be used to double the 3.3V input voltage to supply V+ of the MAX1917. Following schematic shows the MAX1917, together with MAX1683, operates from 3.3V input.

Figure 3 Schematics with MAX1683 charge pump to generate V+ supply for MAX1917.

Table III: Additional Bill of Materials over Figure 1:

Comp. Description Comments C10 10uF/6.3V ceramic capacitor, JMK316BJ106ML Taiyo Yuden C11 10uF/10V ceramic capacitor, LMK325BJ106MN Taiyo Yuden IC2 MAX1683 MAXIM

MAX1683EUK

MAX1916

POK

V+

DDR

EN/HSD

REF

GND

ILIM

VTT

VTTR

PGND

VL

BST

DH

LX

DL

FSEL

L10.68uH/5A

C11uF6.3VC4

0.22uF10V

2.5V or1.5V

C2330uF4V

C80.47uF/10V

Q1Si4808DY C5

1uF6.3V

C63X270uF2V

VOUT

SDN

VIN

VTTR

C71uF/6.3V

DDR

PGND

C34.7uF6.3V

R1100k

C90.47uF/6.3V

D1CMPSH-3

1.25V/3.5Aor 0.75V/3.5A

Q3

2N7002K

R25.1k

R320k

POK



C1110uF10V

GND

OUT

C1-

C1+

IN

3.3V

VIN

C1010uF6.3V

2/25/02

MAX1954 Optimized for 20A

Input: 12V (+/-10%) Output:1.8V (+/-5%); Maximum load=20A Bill of Materials: DESIGNATION QTY DESCRIPTION Cc2 1 100 pF ceramic capacitor (0603) Cc 1 2200 pF ceramic capacitor (0603) C1, C2 2 1µF 10V ceramic capacitor

Taiyo Yuden LMK212BJ105MG C3-C4 2 10 µF 25V ceramic capacitor s

TAIYO YUDEN TMK432BJ106MM C5-C6 2 1000 µF 16V electrolytic capacitor

Rubycon 16MBZ1000M8X20 C7 1 0.1 µF ceramic capacitor

Taiyo Yuden EMK107BJ104MA C8-C11 4 1800 µF 6.3V 19mΩ ESR capacitors

Rubycon 6.3MBZ1800M8X20 C12 1 10 µF 6.3V ceramic capacitor s

TAIYO YUDEN JMK316BJ106ML D1 1 Schottky diode

Nihon EC10QS03L L 2 1.55 µH Inductor (Two in Parallel)

Provided by customer N1, N2 2 N-channel MOSFETs, 30V 5mΩ ON resistance

International Rectifier IRF7822 Rc 1 301 kΩ, 1% resistor ( 0805) R1 1 10 kΩ, 1% resistor ( 1206) R2 1 8.06 kΩ, 1% resistor ( 0805) U1 1 MAX1954EUB (10 pin µMax) Efficiency Measurements: VBATT (V) IBATT(A) Vbias(V) Ibias(mA) VOUT(V) IOUT(A) Eff%

13.18 0.2065 5.001 19 1.792 1.03 66 13.19 0.7947 5 20 1.791 5.03 85 13.19 1.5693 5 24 1.784 10.02 86 13.19 2.3908 4.999 25 1.779 15.02 84 13.19 3.2307 4.999 28 1.726 20.01 81 12.06 0.2205 5.001 19 1.792 1.03 67 12.07 0.8598 5 20 1.791 5.03 86 12.05 1.7129 5 24 1.787 10.02 86 12.03 2.624 4.999 25 1.782 15.02 84 12.03 3.5565 4.999 27 1.744 20.01 81

10.8 0.2437 5.001 19 1.791 1.03 68 10.8 0.9544 5 20 1.792 5.03 87 10.8 1.9 4.999 23 1.793 10.02 87 10.8 2.8985 4.999 24 1.785 15.02 85 10.8 3.9717 4.999 26 1.765 20.01 82

Schematics:

IN

COMP/

GND

HSD

PGND

U1MAX1954

FB

CC2200pF

SHDN

4

2

5 1

3

7

VCC+5V

RC301k1%

C8-C111800uF(4x)

6.3VRubycon

6.3MBZ1800M8X20

R28.06k1%CC2

100 pF

VOUT1.8V@20A

+12V (+/-10%) to 1.8V @20 A. This uses the MAX1954.

R110k1%

Vin+12V

C11uF 10V

L(Two 1.55 uH in parallel)

0.78 uH

BSTDH

DL

LX

10

8

6

9

C3-C410uF(2x)

25VTaiyo Yuden

TMK432BJ106MMC7

0.1uF

N1IRF7822

N2IRF7822

SchottkyNihon

EC10QS03L

C5-C61000uF(2x)

16VRubycon

16MBZ1000M8X20

C21uF 10V

C1210uF6.3V

Taiyo YudenJMK316BJ106ML

MAX1917 Applications 22V MAX Input

Rui Liu 3/5/02

22Vmax/3A peak, -1.5A to 1.5A transient VTT supply application circuit: (minor change needed for higher input voltage) (Low shutdown input current, less than 10uA)

Please note:

1. Higher Rdson MOSFET can be used instead of IRF7811W. For example 20mΩ Rdson MOSFET can be used if the average current is about 1A.

2. Cannot use 10uH inductance. The output voltage deviation at transient response, from 1.5A to –1.5A will not meet JEDEC specification. The maximum voltage deviation is more than 100mV during this transient. If customer used this inductor before and no problem generated, then the 10uH inductor can be used and a 9mΩ droop resistor should be used to stable the operation. MAX1917 uses Quick PWM control architecture. There is no error voltage amplifier; therefore there are no compensation components.

3. The output ripple voltage is about 20mV peak to peak. However, with droop resistor (R10) we meet JEDEC spec for –1.5A to 1.5A to –1.5A load transients with 20A/us load slew rate. It should be pointed out that the lower load current slew rate, the smaller the voltage deviation.

MAX1917

POK

V+

DDR

EN/HSD

REF

GND

ILIMVTT

VTTR

PGND

VL

BST

DH

LX

DL

FSEL

Q1

L12.8uH/6A

C110uF25V

C30.47uF/6.3V

22V maxVL

C80.47uF6.3V

IRF7811W

C4270uF*2.5V

VTTRC71uF/6.3V

C24.7uF10V

Q2IRF7811W

R1OPEN*

C60.1uF6.3V

D1CMPSH-3

1.25V/3A

R3100k

Q3Si1029XV

R25.6k

VL

5V

POK

GND

GND

VDDQR520

C51uF6.3V

EN

Pull-up Logic,5.5V max

R410k

R6249k1%

R77.87k*1%

R810k

* The value of R7 may change due to new output inductor.

* In the real applications, need only one 270uF capacitor. However, 2 caps are need to meet JEDEC requirement, for -3A to 3A and -3A, 20A/us load current slew rate, but not the real applicatoins.

3

10

1

2

5

6

8 9

7

4

13

12

16

15

14

11

R9100k

R100.0090.125W1%

* R1 value de;ends on the MOSFET chosen, see datasheet for equation to determine R1 value.Please note that if R1 is used, ILIM should be disconnected from VL.

MAX1917 Applications 22V MAX Input

Rui Liu 3/5/02

Following waveforms are taken from the transient responses:

Figure 1 Transient response from –1.5A to 1.5A to –1.5A at 20A/us load current slew rate. Meet JEDEC load transient requirement with margin, using 9mΩ droop resistor (R10).

Figure 2 Transient response from –1.5A to 1.5A to –1.5A at 20A/us load current slew rate. Meet JEDEC load transient requirement with no margin, using 4mΩ droop resistor (R10).

Servers Input: +11.4V to +12.6V Output: 5V (+/-5%); Maximum load=10A

VL

REF

GND

EN/HSD

PGND

U1MAX1917

VTT

POK

8

2

11 1

4

13

VCC+5V

C8 (3x)680uF

10VSanyo

10MV680EXR

R240.2k1%

C20.47 uF

VOUT5V@10A

5/1/02 - Sudha Durvasula+11.4V - +12.6V to 5V @10 A. This uses the MAX1917.This circuit has not been tested.

R310k1%

Vin+11.4V

to+12.6V

C14.7uF 10V

L1Sumida CEP125V

1.4uH

BSTDH

DL

LX

14

15

12

16

C5(2x)150uF20V

Sanyo OSCON20SEP150MC3

0.47uF

N1IRF7822

SchottkyCentral

CMPSH-3

D1

V+10

N2IRF7822

D2CMSH5-40

R11

FSEL

5 ILIM

6

7

DDR

VTTR9

C41 uF (10V)

3

Bill of Materials: DESIGNATION QTY DESCRIPTION C1 1 4.7 µF 10V ceramic capacitors

TAIYO YUDEN LMK316BJ475ML C2, C3 2 0.47µF ceramic capacitor (0805) C4 1 1 µF 10V ceramic capacitors

TAIYO YUDEN LMK212BJ105MG C5 2 150 µF 20V organic semiconductor capacitors

Sanyo 20SEP150M C8 3 680 µF 10V aluminum electrolytic capacitors

Sanyo 10MV680EXR D1 1 100 mA 30V Schottky diode

Central Semiconductor CMPSH-3 D2 1 5A Schottky diode

Central Semiconductor CMPSH5-40 L1 1 1.4 µH (20.8A) Inductor

Sumida CEP125V-1R4 N1, N2 2 N-channel MOSFET, 20V (RDS(ON) =5mΩ

@VGS=4.5V) International Rectifier IRF7822

R1 1 1Ω , 5% resistor ( 0805) R2 1 40.2 kΩ , 1% resistor ( 0805) R3 1 10 kΩ , 1% resistor ( 0805) U1 1 MAX1917EEE (16 pin QSOP)

Base Station

INBST

DH

LX

DL

PGND

FB

3.0V to 3.6V INPUT

COMP

ILIM

C1180pF

R182k

D1CMPSH-3

C30.1uF

C622uF6V

(2x)

N1A1/2

FDS6898A

N1B1/2

FDS6898A

L10.68uH

DO3316P-681HC

1953_1b8RWY

3/28/02

2

3

1

7

6

9

8

10

5

U1MAX1953 1.8V@6A

C422uF6V(2x)

R212.7k

R310.0k

GND4

C24.7uF

C5680pF

MAXIM CONFIDENTIAL Vin Iin Vout Iout Efficiency 3.3050 0.029 1.8053 0 2.9930 4.038 1.8018 6.006 0.895 3.3126 3.645 1.8022 6.007 0.896 3.6073 3.346 1.8016 6.007 0.896 20mVpp

BILL OF MATERIALS 3.0V to 3.6V Input 1.8V @ 6A Output

3/28/02 1953_1b8 DESIGNATION QTY DESCRIPTION C1 1 180pF ceramic capacitor (0603) C2 1 4.7uF 10V X5R ceramic capacitor (1206)

Taiyo Yuden LMK316BJ475ML C3 1 0.1uF ceramic capacitor (0603) C4,C6 4 22uF 6V ceramic capacitor (1210)

Taiyo Yuden JMK325BJ226MN C5 1 680pF ceramic capacitor (0603) D1 1 100mA 30V Schottky diode

Central Semi CMPSH-3 L1 1 0.68uH 13A Inductor



Ink jet printer

INBST

DH

LX

DL

PGND

FB

3.3V INPUT

COMP

ILIM

C1390pF

R133k

D1CMPSH-3

C30.1uF

C522uF6V

X5R

N1A1/2

FDS8926A

N1B1/2

FDS8926A

L12.2uH

DO1813P-222HC

1953_1vRWY

4/15/02

2

3

1

7

6

9

8

10

5

U1MAX1953 [email protected]

C422uF10VX5R

R22.49k

R310.0k

GND4

C24.7uF10VX5R

MAXIM CONFIDENTIAL This circuit has not been built and some tweaking may be necessary.

BILL OF MATERIALS

3.3V Input 1.0V @ 1.5A Output

4/15/02 1953_1v DESIGNATION QTY DESCRIPTION C1 1 390pF ceramic capacitor (0603) C2 1 4.7uF 10V X5R ceramic capacitor (1206)

Taiyo Yuden LMK316BJ475ML C3 1 0.1uF ceramic capacitor (0603) C4 1 22uF 10VX5R ceramic capacitor (1812)

Taiyo Yuden LMK432BJ226MM C5 1 22uF 6V X5R ceramic capacitor (1210)

Taiyo Yuden JMK325BJ226MN D1 1 100mA 30V Schottky diode

Central Semi CMPSH-3 L1 1 2.2uH 3.5A Power Inductor



LAN access point

INBST

DH

LX

DL

PGND

FB

3.0V to 3.6V INPUT

COMP

ILIM

C1390pF

R162k

D1CMPSH-3

C20.1uF

C410uF10V(2x)

N11/2

Si9926A

N11/2

Si9926A

L13.3uH

DS1608C-332

1953_1v8RWY

12/21/01

2

3

1

7

6

9

8

10

5


C310uF10V

R212.4k

R310.0k

GND4

MAXIM CONFIDENTIAL This circuit has not been built and some tweaking may be necessary.

BILL OF MATERIALS

3.0V to 3.6V Input 1.8V @ 0.8A Output

12/21/01 1953_1v8 DESIGNATION QTY DESCRIPTION C1 1 390pF ceramic capacitor (0603) C2 1 0.1uF ceramic capacitor (0603) C3,C4 3 10uF 10V ceramic capacitor (1210)

Taiyo Yuden LMK325BJ106MN D1 1 3.1A 30V Schottky diode

Nihon EC31QS03L L1 1 3.3uH 1.2A Inductor

Coilcraft DS1608C-332 N1 1 40m Ohm 20V Dual N-ch MOSFET (SO-8)

Siliconix Si9926ADY R1 1 62k Ohm 5% resistor (0603) R2 1 12.4k Ohm 1% resistor (0603) R3 1 10.0k Ohm 1% resistor (0603) U1 1 MAX1953EUB (10-uMAX)

Network card

INBST

DH

LX

DL

PGND

FB

4.5V to 5.5V INPUT

COMP

ILIM

C1220pF

R168k

D1CMPSH-3

C30.1uF

C522uF6V

X5R

N1A1/2

FDS6930A

N1B1/2

FDS6930A

L11.5uH

DS3316P-152

1953_2d5RWY

4/30/02

2

3

1

7

6

9

8

10

5

U1MAX1953 2.5V@3A

C422uF6V

X5R

R221.5k

R310.0k

GND4

C24.7uF10VX5R

MAXIM CONFIDENTIAL Vin Iin Vout Iout Efficiency 5.0037 0.016 2.4720 4.4966 1.855 2.4674 3.014 0.891 5.0040 1.666 2.4637 3.014 0.890 5.507 1.514 2.4603 3.014 0.889 14mVpp

BILL OF MATERIALS


5/01/02 1953_2d5 DESIGNATION QTY DESCRIPTION C1 1 220pF ceramic capacitor (0603) C2 1 4.7uF 10V X5R ceramic capacitor (1206)

Taiyo Yuden LMK316BJ475ML C3 1 0.1uF ceramic capacitor (0603) C4,C5 2 22uF 6V X5R ceramic capacitor (1210)

Taiyo Yuden JMK325BJ226MM D1 1 100mA 30V Schottky diode


Coilcraft DS3316P-152 N1 1 55m Ohm 30V Dual N-ch MOSFET (SO-8)


Desktop/Server

INBST

DH

LX

DL

PGND

FB

4.5V to 5.5V INPUT

COMP

ILIM

C11.2nF

R122k

D1EC10QS03L

C40.1uF

C71000uF

4V(2x)

N1IRF

7822

N2IRF

7822

L10.36uH

CDEP105L-0R3

1953_2v5RWY

2/26/02

2

3

1

7

6

9

8

10

5

U1MAX1953 2.5V@10A

C522uF10V(3x)

R221.5k

R310.0k

GND4

C2220pF

C34.7uF10V

C62.2nF


BILL OF MATERIALS


2/26/02 1953_2v5 DESIGNATION QTY DESCRIPTION C1 1 1.2nF ceramic capacitor (0603) C2 1 220pF ceramic capacitor (0603) C3 1 4.7uF 10V ceramic capacitor (1206)

Taiyo Yuden LMK316BJ475ML C4 1 0.1uF ceramic capacitor (0603) C5 3 22uF 10V ceramic capacitor (1812)

Taiyo Yuden LMK432BJ226MM C6 1 2.2nF ceramic capacitor (0603) C7 2 1000uF 4V aluminum electrolytic capacitor

Sanyo 4MV1000EXR D1 1 1A 30V Schottky diode

Nihon EC10QS03L L1 1 0.36uH 12A Inductor

Sumida CDEP105L-0R3 N1,N2 2 6.5m Ohm 30V N-ch MOSFET (SO-8)

International Rectifier IRF7822 R1 1 22k Ohm 5% resistor (0603) R2 1 21.5k Ohm 1% resistor (0603) R3 1 10.0k Ohm 1% resistor (0603) U1 1 MAX1953EUB (10-uMAX)

Base station

INBST

DH

LX

DL

PGND

FB

4.75V to 5.25V INPUT

COMP

ILIM

C1180pF

R162k

D1CMPSH-3

C40.1uF

C722uF6V

X5R

N1A1/2

FDS8926A

N1B1/2

FDS8926A

L11.2uH

DO1813P-122HC

1953_3b3RWY

4/17/02

2

3

1

7

6

9

8

10

5

U1MAX1953 3.3V@4A

C510uF10VX5R(2x)

R231.6k

R310.0k

GND4

C34.7uF10VX5R

C222pF

C61nF

C822nF

MAXIM CONFIDENTIAL Vin Iin Vout Iout Efficiency 5.0002 0.044 3.3082 0 4.4955 3.212 3.3023 4.00026 0.915 4.7476 3.041 3.2899 4.0027 0.912 5.0081 2.882 3.2813 4.0027 0.910 5.2502 2.752 3.2780 4.0027 0.908 5.501 2.630 3.2761 4.0027 0.906 90mVpp

BILL OF MATERIALS


4/17/02 1953_3b3 DESIGNATION QTY DESCRIPTION C1 1 180pF ceramic capacitor (0603) C2 1 22pF ceramic capacitor (0603) C3 1 4.7uF 10V ceramic capacitor (1206)


Taiyo Yuden LMK325BJ106MN C6 1 1nF ceramic capacitor (0603) C7 1 22uF 6V ceramic capacitor (1210)

Taiyo Yuden JMK325BJ226MM C8 1 22nF ceramic capacitor (0603) D1 1 100mA 30V Schottky diode


Coilcraft DO1813P-122HC N1 1 38m Ohm 30V Dual MOSFET (SO-8)


Base station

INBST

DH

LX

DL

PGND

FB

4.5V to 5.5V INPUT

COMP

ILIM

C1390pF

R11.5M

D1EC10QS03L

C40.1uF

C7820uF

6VEXR(2x)

N1IRF

7822

N2IRF

7822

L10.5uH

CDEP105H-0R5

1953_3v3RWY

3/12/02

2

3

1

7

6

9

8

10

5

U1MAX1953 3.3V@10A

C522uF10VX5R(3x)

R231.6k

R310.0k

GND4

C2

C34.7uF10VX5R

C62.2nF


BILL OF MATERIALS


3/12/02 1953_3v3 DESIGNATION QTY DESCRIPTION C1 1 390pF ceramic capacitor (0603) C2 0 C3 1 4.7uF 10V ceramic capacitor (1206)


Taiyo Yuden LMK432BJ226MM C6 1 2.2nF ceramic capacitor (0603) C7 2 820uF 6V aluminum electrolytic capacitor

Sanyo 6MV820EXR D1 1 1A 30V Schottky diode

Nihon EC10QS03L L1 1 0.5uH 12A Inductor

Sumida CDEP105L-0R5 N1,N2 2 6.5m Ohm 30V N-ch MOSFET (SO-8)

International Rectifier IRF7822 R1 1 1.5M Ohm 5% resistor (0603) R2 1 31.6k Ohm 1% resistor (0603) R3 1 10.0k Ohm 1% resistor (0603) U1 1 MAX1953EUB (10-uMAX)

Set top box

BST

DH

LX

DL

GND

FB

3.0V to 3.6V INPUT

COMP

IN

C21nF

R1150k

D1CMPSH-3

C40.1uF

C7680uF10V

MV-AX(3x)

N11/2

FDS8926A

N11/2

FDS8926A

L110uH

DO5022P-103HC

1966_1b8RWY

4/09/02

2

3

4

6

5

7

8

1

U1MAX1966 1.8V@3A

C5680uF

10VMV-AX

(2x)

R210.5k

R38.25k

C11uF10V

C3180pF

C64.7uF10VX5R

Vin Iin Vout Iout Efficiency 3.3017 0.037 1.822 0 2.9960 2.055 1.817 3 0.885 3.2942 1.872 1.818 3 0.884 3.6140 1.708 1.817 3 0.883 25mVpp


4/11/02 1966_1b8 DESIGNATION QTY DESCRIPTION C1 1 1uF 10V X7R ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MG C2 1 1nF ceramic capacitor (0603) C3 1 180pF ceramic capacitor (0603) C4 1 0.1uF ceramic capacitor (0603) C5,C7 5 680uF 10V aluminum electrolytic capacitor

Sanyo 10MV680AX C6 1 4.7uF 10V X5R ceramic capacitor (1206)

Taiyo Yuden LMK316BJ475ML D1 1 100mA 30V Schottky diode

Central Semi CMPSH-3 L1 1 10uH Power inductor

Coilcraft DO5022P-103HC N1 Dual N-channel MOSFET (SO-8)


DDR RAM VDDQ Supply

BST

DH

LX

DL

GND

FB


COMP

IN

C21.5nF

R1180k

D1CMPSH-3

C40.1uF

C71000uF

4VEXR(2x)

N1Si

4866DY

N2Si

4866DY

L13.3uH

DO5022P-332HC

1966_2d5RWY

4/18/02

2

3

4

6

5

7

8

1

U1MAX1966 2.5V@10A

R221.5k

R310.0k

C11uF10V

C318pF

C5820uF

6VEXR(2x)

D2EC31

QS02L

C622uF6V

X5R

C83.9nF

Vin Iin Vout Iout Efficiency 3.3037 0.027 2.5208 0 3.1030 8.833 2.5477 10.020 0.931 3.3027 8.336 2.5567 10.020 0.930 3.5023 7.892 2.5642 10.020 0.929 50mVpp


2.5V @ 10A Output 4/18/02

1966_2d5 DESIGNATION QTY DESCRIPTION C1 1 1uF 10V X7R ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MG C2 1 1.5nF ceramic capacitor (0805) C3 1 18pF ceramic capacitor (0805) C4 1 0.1uF ceramic capacitor (0805) C5 2 820uF 6V aluminum electrolytic capacitor

Sanyo 6MV820EXR C6 1 22uF 6V X5R ceramic capacitor (1210)

Taiyo Yuden JMK325BJ226MM C7 2 1000uF 4V aluminum electrolytic capacitor

Sanyo 4MV1000EXR C8 1 3.9nF ceramic capacitor (0805) D1 1 100mA 30V Schottky diode (SOT-23)

Central Semi CMPSH-3 D2 1 3A 20V Schottky diode

Nihon EC31QS02L L1 1 3.3uH Power inductor

Coilcraft DO5022P-332HC N1,N2 2 8.5m Ohm N-channel MOSFET (SO-8)

Siliconix Si4866DY R1 1 180k Ohm 5% resistor (0805) R2 1 21.5k Ohm 1% resistor (0805) R3 1 10.0k Ohm 1% resistor (0805) U1 1 MAX1966EUB (10-uMAX)

Line Card

BST

DH

LX

DL

GND

FB

4.5V to 5.5V INPUT

COMP

IN

C21.5nF

R1160k

D1CMPSH-3

C30.1uF

C5470uF

6VMV-AX

(2x)

N11/2

NDS9956A

N11/2

NDS9956A

L122uH

CDRH104R

1966_2v5RWY2/1/02

2

3

4

6

5

7

8

1


C4330uF10V

MV-AX

R221.5k

R310.0k

C11uF10V



2.5V @ 0.5A Output 2/1/02

1966_2v5 DESIGNATION QTY DESCRIPTION C1 1 1uF 10V X7R ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MG C2 1 1.5nF ceramic capacitor (0805) C3 1 0.1uF ceramic capacitor (0805) C4 1 330uF 10V aluminum electrolytic capacitor

Sanyo 10MV330AX C5 1 470uF 6V aluminum electrolytic capacitor

Sanyo 6MV470AX D1 1 100mA 30V Schottky diode

Central Semi CMPSH-3 L1 1 22uH Power inductor

Sumida CDRH104R-220 N1 Dual N-channel MOSFET (SO-8)

Fairchild NDS9956A R1 1 100k Ohm 5% resistor (0805) R2 1 21.5k Ohm 1% resistor (0805) R3 1 10.0k Ohm 1% resistor (0805) U1 1 MAX1966EUB (10-uMAX)

Alphanumeric display

BST

DH

LX

DL

GND

FB

4.5V to 5.5V INPUT

COMP

IN

C21.8nF

R1120k

D1CMPSH-3

C40.1uF

C7820uF

6VEXR

N1A1/2

FDS6890A

N1B1/2

FDS6890A

L16uH

DO5022P-602HC

1966_3v3RWY

4/23/02

2

3

4

6

5

7

8

1

U1MAX1966 3.3V@8A

R231.6k

R310.0k

C11uF10V

C322pF

C5220uF10V

OS-CON

D2EC31

QS02L

C622uF6V

X5R

C82.2nF



4/23/02 1966_3v3 DESIGNATION QTY DESCRIPTION C1 1 1uF 10V X7R ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MG C2 1 1.8nF ceramic capacitor (0805) C3 1 22pF ceramic capacitor (0805) C4 1 0.1uF ceramic capacitor (0805) C5 1 220uF 10V organic semiconductor capacitor

Sanyo 10SA220M C6 1 22uF 6V X5R ceramic capacitor (1210)

Taiyo Yuden JMK325BJ226MM C7 1 820uF 6V aluminum electrolytic capacitor

Sanyo 6MV820EXR C8 1 2.2nF ceramic capacitor (0805) D1 1 100mA 30V Schottky diode (SOT-23)

Central Semi CMPSH-3 D2 1 3A 20V Schottky diode

Nihon EC31QS02L L1 1 6uH Power inductor

Coilcraft DO5022P-602HC N1 1 18m Ohm Dual N-channel MOSFET (SO-8)


Set top box

VCC VLBST

DH

LX

DL

GND

FB

10.8V to 13.2V VIN

COMP

IN

C1680pF

R1200k

C32.2uF10V

D1CMPSH-3

C40.1uF

C7820uF

6VMV-EXR

N11/2FDS

6990A

N11/2FDS

6990A

L115uH

DO5022P-153HC

1967_2b5RWY

2/19/02

1

2

4

7

6

8

9

10

53

U1MAX1967

2.5V@5AVOUT

C647uF25VSC

R221.5k

R310.0k

C20.1uF

C5680pF



2/19/02 1967_2b5 DESIGNATION QTY DESCRIPTION C1,C5 2 680pF ceramic capacitor (0805) C2,C4 2 0.1uF ceramic capacitor (0805) C3 1 2.2uF 10V ceramic capacitor (0805)

Taiyo Yuden LMK212BJ225MG C6 1 47uF 25V aluminum electrolytic capacitor

Sanyo OS-CON 25SC47M C7 1 820uF 6V aluminum electrolytic capacitor

Sanyo 6MV820EXR D1 1 100mA 30V Schottky diode (SOT-23)

Central Semi CMPSH-3 L1 1 15uH 8A Power inductor

Coilcraft DO5022P-153HC N1 1 Dual N-channel MOSFET (SO-8)


Cable modem

VCC VLBST

DH

LX

DL

GND

FB


COMP

IN

C11nF

R1220k

C32.2uF10V

D1CMPSH-3

C40.1uF

C6470uF

6VMV-AX

N11/2

NDS9956A

N11/2

NDS9956A

L147uH

PCV-0-473-03

1967_3a3RWY

1/29/02

1

2

4

7

6

8

9

10

53


C5470uF16V

MV-AX

R231.6k

R310.0k

C20.1uF


BILL OF MATERIALS 10.5V to 13.5V Input 3.3V @ 0.75A Output

1/29/02 1967_3a3 DESIGNATION QTY DESCRIPTION C1 1 1nF ceramic capacitor (0805) C2,C4 2 0.1uF ceramic capacitor (0805) C3 1 2.2uF 10V ceramic capacitor (0805)



Sanyo 6MV470AX D1 1 100mA 30V Schottky diode (SOT-23)


Coilcraft PCV-0-473-03 N1 1 Dual N-channel MOSFET (SO-8)

Fairchild NDS9956A R1 1 220k Ohm 5% resistor (0805) R2 1 31.6k Ohm 1% resistor (0805) R3 1 10.0k Ohm 1% resistor (0805) U1 1 MAX1967EUB (10-uMAX)

CN 1 of 7 12/23/04

MAX8597 for Fan Control

Date: 12/232004

BOM REV: 1

SCHEMATIC REV: 1

BOARD REV: P1

MAX8597 BOM DESIGNATION QTY DESCRIPTION

C3 1 10µF 35V X5R Ceramic Capacitor (1210)

Taiyo Yuden GDK325BJ106KN

Or Equivalent

C4 1 22µF 16V X5R Ceramic Capacitor (2220)

TDK C3225X5R1C226MT

Or Equivalent

C6 1 4.7µF 10% 6.3V X5R Ceramic Capacitor (0603)

TDK C1608X5R0J475K

Or Equivalent

C7 1 0.01µF 10% 25V X7R Ceramic Capacitor (0402)

Murata GRP155R71E103K

Or Equivalent

C8 1 82pF 5% 50V C0G Ceramic Capacitor (0402)

TDK C1005C0G1H820J

Or Equivalent

C9 1 2200pF 10% 25V X7R Ceramic Capacitor (0603)

TDK C1608X7R1E222KT

Or Equivalent

MAX8597

GNDCOMP REFO

FBIL

IM

VL

DL

LX

DH

BST

FR

EQ

SS

19

20

18

5

3 1 8 10

16

11

15

14

13

MAX8597 (1MHz) : Vin = 10.8V to 13.2V, Vout = 5V to 12V Live Adjustable, Iout = 2.5A

VL

VL

C13

0.22uF

C4

22uF

C6

4.7uF

D1

CMDSH-3

N1

1/2FDS6892

L1

3.3uH

AIN-

VIN (10.8V to 13.2V)

Vout

5V to 12V/2.5A

EN

V+

ENON

OFF

9172

C14

1uFC7

0.01uF

C17

0.033uF

C9

2200pF

C10

2.2pF

C8

82pF

R2

20k

R3

1.13k

R6

3.9k

R10

34k

R8

6.04K

R7

102k

AVL

C16

0.2

2uF

R9

18k

C3

10uF

PGND

74

12

6

AOUT

R1

10

RE

FIN

AVL

AIN+

Vadj.(0V to 3.3V:200kHz PWM)

R12

100k

R11

69.8k

R14

69.8k

C12

1uF

R15

100k

R34

2.0

C36

1000pF

R21

3.0

C11

0.1uF

Q2

1/2FDS6892

R13

1k

R35

3.0

CN 2 of 7 12/23/04

C10 1 2.2pF 50V C0G Ceramic Capacitor (0402)

Murata GJ61555C1H2R2C

Or Equivalent


TDK C1608X7R1E104K

Or Equivalent

C12 1 1µF 10% 10V X7R Ceramic Capacitor (0603)

TDK C1608X7R1A105K

Or Equivalent

C13, C16 2 0.22µF 10% 10V X7R Ceramic Capacitor (0603)

Taiyo Yuden LMK107 BJ224KA

Or Equivalent

C14 1 1µF 20% 35V X7R Ceramic Capacitor (1206)

Taiyo Yuden GMK316BJ105ML

Or Equivalent


TDK C1005X7R1C333K

Or Equivalent

C36 1 1000pF 10% 50V X7R Ceramic Capacitor (0402)

TDK C1005X71H102K

Or Equivalent

R1 1 10Ω 5% Resistor (0402)

R2 1 20kΩ 1% Resistor (0402)

R3 1 1.13kΩ 1% Resistor (0402)

R6 1 3.9kΩ 5% Resistor (0402)

R7 1 102kΩ 1% Resistor (0402)

R8 1 6.04kΩ 1% Resistor (0402)

R9 1 18kΩ 5% Resistor (0402)

R10 1 34kΩ 1% Resistor (0402)

R11, R14 2 69.8kΩ 1% Resistor (0402)

R12, R15 2 100kΩ 1% Resistor (0402)

R21 1 3Ω 5% Resistor (0805)

R34 1 2Ω 5% Resistor (1206)

R35 1 3Ω 5% Resistor (0402)

D1 1 30V 100mA Schottky Diode (SOD-323)

Central Semiconductor CMDSH-3

N1/2 1 30V N-MOSFET (SO-8 Dual)

Fairchild FDS6892

L1 3.3µH 4.1A 17mΩ Inductor

TDK: RLF7030T-3R3M4R1

JU1, JU2 2 3-pin Header

36 PIN HEADER 0.01 CENTERS (COMES IN 36

PIN STRIPS, CUT TO FIT)

SULLINS: PTC36SAAN

See Table for

Shunt Locations

2 Shunt

U1 1 MAX8597ETP

Note: R34 and C36 were moved to near FETs due to changing FETs’ package to

dual SO-8. R35 is added near pin 15 of MAX8597.

CN 3 of 7 12/23/04

Test results:

1) Output voltage and Efficiency for Vadj. from 0% to 100% duty cycle of

200kHz 3.3V with 4.8Ω load resistor.

Duty Cycle Vout % Efficiency Vin Iin

0 5.08 82.28 12.1 0.54

0.1 5.85 83.06 12.09 0.71

0.2 6.57 84.59 12.08 0.88

0.3 7.29 86.54 12.07 1.06

0.4 8 87.67 12.07 1.26

0.5 8.71 89.15 12.06 1.47

0.6 9.43 90.44 12.05 1.7

0.7 10.13 91.53 12.04 1.94

0.8 10.84 93.35 12.03 2.18

0.9 11.55 94.84 12.01 2.44

1 11.77 95.74 12.01 2.51

Vout vs. Vadj. Duty Cycle

0

2

4

6

8

10

12

14

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1

Vadj. Duty Cycle

Vout (V)

Vout

CN 4 of 7 12/23/04

2) Figure 1 below shows typical waveforms of Vadj., Vout and Iout at ~50%

Duty Cycle: Ch2 = Vout, CH4 = Vadj., CH3 = Iout at 1A/div

Efficiency Vs. Output Voltage

80.00

82.00

84.00

86.00

88.00

90.00

92.00

94.00

96.00

98.00

5 6 7 8 9 10 11 12

Output Voltage (V)

Efficiency (%)

% Efficiency

CN 5 of 7 12/23/04

3) Below are waveforms taken when the output drives two 12V fans (

Minebea model 4715KL-04W-B49 rated at 12Vdc, 0.9Adc, 120mm x

120mm x 38mm):

Figure 2: Start up at Vadj. = 0V, Vout = 5V. CH2 = Vout, Ch4 = V adj.,

CH3 = Fans’ Current at 1A/div. Fans ware stop before start up.

Figure3: Start up at Vadj. = 50% DC of 3.3V,200kHz, Vout ~ 8.7V. CH2 =

Vout, Ch4 = V adj., CH3 = Fans’ Current at 1A/div. Fans ware stopped

before start up.

CN 6 of 7 12/23/04

Figure 4: Start up at Vadj. = 90% D of 3.3V,200kHz, Vout ~ 11.5V. CH2 =

Vout, Ch4 = V adj., CH3 = Fans’ Current at 1A/div. Fans ware stopped

before start up.

Figure 5: Output Ripple and Noise at Vadj = 0%. CH2 = Vout (AC

couple), Ch4 = V adj., CH3 = Fans’ Current at 1A/div.

CN 7 of 7 12/23/04

Figure 6: Output Ripple and Noise at Vadj = 100%. CH2 = Vout (AC

couple), Ch4 = V adj., CH3 = Fans’ Current at 1A/div.

Figure 7: Effective Duty Cycle and Switching Frequency at 20 Cycles

Maximum skip. Vadj =100% (3.3V). CH1 = Vlx, CH2 = Vout , Ch4 = V

adj. Note that Frequency is ~ 1MHz/20 ~ 50kHz, and Effective Duty Cycle

is 99%.

IN

BST

DH

LX

DL

PGND

FB

4.75V to 5.25V

VIN

COMP

ILIM

C1

470pF

R1

47k

D1

BAT54

C3

0.1uF

C6

22uF

6V

X5R

N1A

1/2

FDS

6930A

N1B

1/2

FDS

6930A

L1

2.2uH

DO1813P

-222HC

1953_3g3

RWY

3/02/04

2

3

1

7

6

9

8

10

5

U1

MAX1953

[email protected]

VOUT

C4

22uF

6V

X5R

(2x)

R3

31.6k

R4

10.0k

GND4

C2

4.7uF

10V

X5R

C5

330pF

R5

4.7

R6

100k

R7

100k

C7

0.1uF

Q1

MMBT

3904

Q2

MMBT

3904

2.5V

VIN

R8

220k

R9

100k

C8

0.1uF

Q3

MMBT

3904

Q4

MMBT

3904

RESET

R2

4.7

R10

100k


5.00 0.0`5 3.`94 0

4.72 1.64 3.252 2.2 0.924

5.01 1.54 3.240 2.2 0.924

5.26 1.46 3.228 2.2 0.925

20MHz BW <20mVpp

BILL OF MATERIALS


3.3V @ 2.2A Output

3/02/04

1953_3g3





C3,C7,C8 3 0.1uF ceramic capacitor (0603)





BAT54




Fairchild FDS6930A

Q1,Q2,Q3,Q4 4 200mA 40V NPN transistor (SOT-23)

Fairchild MMBT3904


R2,R5 1 4.7 Ohm 5% resistor (0603)

R3 1 31.6k Ohm 1% resistor (0603)

R4 1 10.0k Ohm 1% resistor (0603)




DVD

VCC VLBST

DH

LX

DL

GND

FB

12.6V to 15.4V VIN

COMP

IN

C12.2nF

R175k

C32.2uF10V

D1CMPSH-3

C40.1uF

C6470uF

6VMV-AX

(2x)

N11/2

FDS6930A

N11/2

FDS6930A

L122uH

CDRH127-220

1967_3b3RWY

2/08/02

2

4

9

10

11

12

13

14

1516

U1MAX1967

3.3V@2AVOUT

C5390uF25V

MV-AX

R331.6k

R410.0k

C20.1uF

SHDNN2

2N7002

R2100k



2/08/02 1967_3b3 DESIGNATION QTY DESCRIPTION C1 1 3.9nF ceramic capacitor (0805) C2,C4 2 0.1uF ceramic capacitor (0805) C3 1 2.2uF 10V ceramic capacitor (0805)





Sumida CDRH127-470 N1 1 Dual N-channel MOSFET (SO-8)

Fairchild FDS6930A N2 1 2N7002 (SOT-23) R1 1 75k Ohm 5% resistor (0805) R2 1 100k Ohm 5% resistor (0805) R3 1 31.6k Ohm 1% resistor (0805) R4 1 10.0k Ohm 1% resistor (0805) U1 1 MAX1967EUB (10-uMAX)

3.3V Input

1.25V @ 12A Output 04/18/02

DESIGNATION QTY DESCRIPTION C4-C9 6 Cap 270 uF 2.5V SP

Panasonic (EEFUE0E271XR) C1-C3 3 Cap

180uF 6.3V SP Panasonic (EEFUE0J181XR)

C10,C11,C15 3 Cap 10uF 6.3V Ceramic X5R 1812, Taiyo Yuden (JMK212BJ106MG)

C13,C14,C16 3 Cap 0.47uF 10V Ceramic X5R 0603, Taiyo Yuden (LMK107BJ474KA)

C12 1 Cap 0.47uF 16V Ceramic X5R 0805, Taiyo Yuden (EMK212BJ474MG)

CA 1 Cap 0.1uF 16V Ceramic X7R 0603, Kemet (C0603C104K4RAC)

D1 1 Diode 30V 0.1A Schottky SOT-23, Centralsemi (CMPSH-3)

N1,N2 2 NFET 0.0065 Ohm 30V SO-8, International Rectifier (IRF7822)

R8 1 Resistor 511 Ohm 1% 0805 R2 1 Resistor 5.1k Ohm 5% 0805 R7 1 Resistor 36.5k Ohm 1% 0805 R3 1 Resistor 100k Ohm 5% 0805 L1 1 Inductor, 0.3uH

Sumida (CDEP105-0R3NC-88) U1 1 DDR Buss Terminator 16 QSOP,

Maxim (MAX1917EEE) OPTIONAL PARTS

R6 1 Resistor 10k Ohm 5% 0805 Q1 1 NFET SOT-23

Central Semi (2N7002)

V+

DDR

ILIM

REF

VTTR

PGND

FSEL

DL

LX

DH

BST

VL

U1MAX1917

VOUT+1.25V @ 12AL1

0.3uHC140.47uF

C4-C9280uF2.5VSP(6x)

C130.47uF

GND

C160.47uF

N1IRF7822

D1CMPSH-3

SM04/18/02

1

2

3

4

5

6

7

8

9

11

12

VTT

EN / HSD

13

14

15

16

N2IRF7822

3.3V INPUT

R3100K

POK

10

C1510uF6.3V

VL

VLJU1

VIN

JU3

FLOAT= 300KHzGND = 550KHz JU2

VTTR

R4SHORT

VIN

GND

VIN

JU4

C10,C1110uF6.3v(2X)

GND

DDR (2.5V input)

POK

VLOGIC

REF2V

R25.1K

R1OPEN

+

VL

C120.47uF

C1-C3180uF6.3VSP(3x)

+

R85111%

R736.5K

1%

12VV+

GND

R610k

Q1EN

CA0.1uF

IN

BST

DH

LX

DL

PGND

FB

3.0V to 3.6V

INPUT

COMP

ILIM

C1

390pF

R1

27k

D1

CMPSH-3

C3

0.1uF

C6

22uF

6V

X5R

N1

1/2

FDS

8926A

N1

1/2

FDS

8926A

L1

1.2uH

DO1813P

-122HC

1953_1l5

RWY

9/30/03

2

3

1

7

6

9

8

10

5

U1

MAX1953 1.5V@2A

C4

22uF

6V

X5R

R2

8.87k

R3

10.0k

GND4

C2

4.7uF

R4

2.7

C5

1.2nF


3.299 0.030 1.5020 0

2.998 1.14 1.5017 2.004 0.881

3.306 1.03 1.4980 2.004 0.882

3.611 0.95 1.4990 2.004 0.876

20MHz BW <20mVpp

BILL OF MATERIALS

3.0V to 3.6V Input

1.5V @ 2A Output

9/30/03

1953_1l5













N1 1 38m Ohm 20V N-ch MOSFET (SO-8)

Fairchild FDS8926A


R2 1 8.87k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 2.7 Ohm 5% resistor (0603)


10 9

8

7

6

5

42

3

1

VHV+

SHDN

REF

VL 3/5

OUT

CS

GND

EXTC1

0.47uF

C20.1uF

C34.7uF10V

C44.7uF10V

C5150uF25VMV-AX

D1MBR0520L

R10.2

0.125W

L147uH

CDRH5D18

C6220uF10VMV-AX

U1MAX1744

12V INPUT

+5V @ 300mA

P1FDC636P

+12V into +5V @ 300mARWY10/5/00

SHDN

Notes:C3,C4 Taiyo YudenC5,C6 Sanyo MV-AX seriesD1 ON Semiconductor (formerly Motorola)L1 Sumida CDRH5D18 seriesP1 Fairchild SemiconductorU1 Maxim Integrated Products

This circuit operates at about 200kHz and has about 50mVp-p ripple.

3.0V to 3.6VIN2

GND2

1.2V @ 1AOUT2

POK

COMP GNDSS

PGND

FB

LXIN

FBSEL

ON

POK

U2MAX1974

9

1

10

6

2 5

4

7

3

8

123

123

JU4

JU5

JU6

C54.7uF6V

C6330pF

C74.7uF6V

C80.1uF

R7100k

R643k

L23.3uH

R46.04k

R510.0k

1974_1v2RWY5/22/02

MAXIM CONFIDENTIAL

Vin Iin Vout Iout Efficiency3.3013 0.005 1.2042 02.9965 0.543 1.2034 1.000 0.7393.3034 0.488 1.2034 1.000 0.7463.6080 0.444 1.2035 1.000 0.751

15mVpp

BILL OF MATERIALS 3.0V to 3.6V Input1.2V @ 1A Output

5/22/011974_1v2 DESIGNATION QTY DESCRIPTIONC5,C7 2 4.7uF 6V X5R ceramic capacitor (0805)

Taiyo Yuden JMK212BJ475KGC6 1 330pF ceramic capacitor (0603)

Murata GRM39C0G331J050ADC8 1 0.1uF 16V X7R ceramic capacitor (0603)

Taiyo Yuden EMK107BJ104KAL2 1 3.3uH 1.1A Power inductor

Sumida CDRH3D16-3R3R4 1 6.04k Ohm 1% resistor (0603)R5 1 10.0k Ohm 1% resistor (0603)R6 1 100k Ohm 5% resistor (0603)U2 1 MAX1974EUB (10-uMAX)

IN

BST

DH

LX

DL

PGND

FB

3.135V to 3.465V

INPUT

COMP

ILIM

C1

180pF

R1

68k

D1

CMPSH-3

C3

0.1uF

C6

22uF

6V

X5R

N1A

1/2

FDS

8926A

N1B

1/2

FDS

8926A

L1

1.2uH

DO1813P

-122HC

1953_1o8

RWY

4/30/03

2

3

1

7

6

9

8

10

5

U1

MAX1953 1.8V@2A

R2

12.7k

R3

10.0k

GND4

C2

4.7uF

C5

1.2nF

C4

22uF

6V

X5R

(2x)

R4

2.7


3.31 0.0324 1.817 0

3.13 1.3123 1.815 2.006 0.886

3.32 1.2368 1.816 2.006 0.887

3.47 1.8159 1.816 2.006 0.885

20MHz BW 12mVpp

BILL OF MATERIALS


1.8V @ 2A Output

4/30/03

1953_1o8











L1 1 1.2uH Power Inductor



Fairchild FDS8926A


R2 1 12.7k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 2.7 Ohm 5% resistor (0805)


IN

BST

DH

LX

DL

PGND

FB

3.14V to 3.47V

VIN

COMP

ILIM

C1

330pF

R1

47k

D1

CMPSH-3

C3

0.1uF

C6

22uF

6V

(2x)

N1A

1/2

FDS

6890A

N1B

1/2

FDS

6890A

L1

1.0uH

DO3316P

-102HC

1953_1g2

RWY

3/26/03

2

3

1

7

6

9

8

10

5

U1

MAX1953

1.2V@3A

VOUT

C4

22uF

6V

(2x)

R2

5.11k

R3

10.0k

GND4

C2

4.7uF

C5

1.5nF

R4

2.4


3.3096 0.0362 1.2049 0

3.1373 1.3503 1.2029 3.0112 0.8550

3.2996 1.2848 1.2028 3.0113 0.8544

3.4745 1.2215 1.2029 3.0113 0.8535

20MHz BW <10mVpp

BILL OF MATERIALS


1.2V @ 3A Output

3/26/02

1953_1g2











L1 1 1.0uH 11A Power Inductor



Fairchild FDS6890A


R2 1 5.11k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 2.4 Ohm 5% resistor (0805)


IN

BST

DH

LX

DL

PGND

FB

4.75V to 5.25V

VIN

COMP

ILIM

C1

330pF

R1

33k

D1

BAT54

C3

0.1uF

C6

22uF

6V

X5R

N1A

1/2

FDS

6930A

N1B

1/2

FDS

6930A

L1

1.8uH

CDRH4D28

-1R8

1953_1j2

RWY

3/2/04

2

3

1

7

6

9

8

10

5

U1

MAX1953

[email protected]

VOUT

C4

22uF

6V

X5R

R3

5.11k

R4

10.0k

GND4

C2

4.7uF

10V

X5R

C5

330pF

R5

4.7

R2

4.7


5.02 0.022 1.177 0

4.74 0.64 1.190 2.1 0.824

5.03 0.60 1.186 2.1 0.825

5.27 0.58 1.182 2.1 0.812

20MHz BW <20mVpp

BILL OF MATERIALS


1.2V @ 2.1A Output

3/2/04

1953_1j2









BAT54


Sumida CDRH4D28-1R8


Fairchild FDS6930A


R2,R5 1 4.7 Ohm 5% resistor (0603)

R3 1 5.11k Ohm 1% resistor (0603)

R4 1 10.0k Ohm 1% resistor (0603)


IN

BST

DH

LX

DL

PGND

FB

4.5V to 5.5V

INPUT

COMP

ILIM

C1

390pF

R1

33k

D1

CMPSH-3

C3

0.1uF

C6

22uF

6V

(2x)

N1A

1/2

FDS

6890A

N1B

1/2

FDS

6890A

L1

1.0uH

DO3316P

-102HC

1953_1k5

RWY

8/11/03

2

3

1

7

6

9

8

10

5

U1

MAX1953 1.5V@4A

C4

22uF

6V

(2x)

R2

8.87k

R3

10.0k

GND4

C2

4.7uF

C5

1.5nF

R4

2.7


5.00 0.05 1.506 0

4.47 1.55 1.504 4 0.868

5.00 1.39 1.503 4 0.865

5.53 1.27 1.500 4 0.854

20MHz BW <10mVpp

BILL OF MATERIALS

4.5V to 5.5V Input

1.5V @ 4A Output

8/11/03

1953_1k5











L1 1 1uH Power Inductor



Fairchild FDS6890A


R2 1 8.87k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 2.7 Ohm 5% resistor (0805)


MAX1939: AMD Athlon XP Mobile Processor Solution MAX1939 is a dual-phase DC-DC switching regulator for the AMD Athlon™ Mobile processor. The MAX1939 can be evaluated using the MAX1938 EV kit. Although the board can support 60A of output current, the Athlon XP Mobile processors draw less than 30A of current. Furthermore efficiency is extremely important in the 10A to 30A operating range. In this experiment the existing 60A board has been optimized to obtain high efficiency in the 10A to 30A load range. The following document provides the input and output conditions, BOM, circuit schematic and the resulting efficiency. Specifications: Input: +6.5V to +20V; Output: 1.5V; Maximum load=30A Bill of Materials: DESIGNATION QTY DESCRIPTION C3, C7 2 0.22 µF, 10V ceramic capacitor X7R (0603)

Taiyo Yuden LMK107BJ224KA C4 1 2.2 uF 10V ceramic capacitor X5R (0805)

Taiyo Yuden LMK212BJ225KG C5 1 0.47 µF, 10V ceramic capacitor X5R (0603)

Taiyo Yuden LMK107BJ474KA C6 1 47 pF, 50V ceramic capacitors COG (0603)

Murata GRM39COG470J050AD C8, C9, C17, C32 4 1000 pF, 6.3V ceramic capacitors X7R (0603)

Murata GRM39X7R102K C10-C13 4 10µF, 6.3V ceramic capacitors (0805)

Taiyo Yuden JMK212BJ106MG C14 1 1µF, 10V ceramic capacitors X7R (0805)

Taiyo Yuden LMK212BJ105MG C15 1 0.01 µF 50V ceramic capacitor X7R (0603)

Murata GRM18X7R103K50V C33,34,37,38,41,42,45,46

8 10µF, 25V ceramic capacitors (1812) Taiyo Yuden TMK432BJ106MM

C49-C52 4 390 µF, 2V Low ESR (10 mΩ) electrolytic capacitors Panasonic EEFUE0D391XR

D2 1 100 mA, 30V Schottky Dual diode Central Semiconductor CMPSH-3A

L1,L2 2 1.0µH Inductor Panasonic ETQP6F1R0BFA N12, N14, N15, N16, N17, N18

6 N-channel MOSFETs, 30V (RDS(ON) =9mΩ @VGS=4.5V) International Rectifier IRF7811W

R1,D1 2 0 ohm. Short. R2 1 51.1 kΩ, 1% resistor R3 1 200 kΩ, 1% resistor R4 1 37.4 kΩ, 1% resistor R5, R8 2 3.3Ω, 5% resistor R6 1 100 kΩ, 5% resistor R7 1 120 kΩ, 5% resistor R9, R10 2 200 Ω, 5% resistor R11, R14 2 2 mΩ, 1% sense resistor 1W (2512)

Panasonic ERJM1WTF2M0U R17, R18 1 100 Ω, 5% resistor U1 1 MAX1939EEI (28 pin QSOP) Vripple=20mV

™ Athlon is the Trademark of Advanced Micro Devices

MAX1939 Circuit Schematic:

1.5V @30A

VOUT

VCC

GNDFB

EN

VPOS

DL2

VID4

LX1

CS1

GNDS

REFLX2

ILIM

1510

13

7

14

17

20

23

24

3

8

U1MAX1939

C50.47uF

C30.22uF

R7120k

R140.002

L11.0uH

C42.2uF

10uF25V

TMK432BJ106MM(8x)

C49-C52390uF

PanasonicSP Cap

(4X)

R6100k

BST1

VDD DH1N1IRF

7811W

1

9

PWRGD

DH2

18

DL1

25

26

6.5V to20VVIN

R437.4k

R3200k

R1Short

N3IRF

7811W(2x)

C141uF

CS2

PGND

N4IRF

7811W(2x)

N2IRF

7811W

27

19

21

C10-C1310uF6.3V

JMK316BJ106ML(4x)

VLG 22

BST2 16

TO VIN

R110.0026(

L21.0uH

R18100

TO VDD

PWRGD

R17100

11GNDS

12R2

51.1k

C647pF

TIME

VID3

VID2

VID1

VID0

5

2

6

4

D1Short

28

VDD5V

C150.01uF

D2

CMPSH-3A

R83.3

R53.3

C321000 pF

R10200

C81000

pF

C91000pF

R9200

C171000 pF

Efficiency Data: Efficiency data is taken at 3 operating input voltages 7V, 12V and 20V. Vin Iin I_Vdd Vout Iout Efficiency

7.2 1.1114 0.023 1.4945 5.03 92.617.12 2.2493 0.024 1.4887 10.02 92.457.03 3.4478 0.025 1.4829 15.02 91.427.16 4.5847 0.026 1.4774 20.01 89.707.05 5.9 0.027 1.4716 25.02 88.237.09 7.155 0.028 1.466 30 86.46

Vin Iin I_Vdd Vout Iout Efficiency

12.26 0.6649 0.025 1.4962 5.01 90.5712.21 1.3269 0.025 1.4912 10.02 91.5212.16 2.0145 0.026 1.4862 15.02 90.6512.11 2.7345 0.027 1.4809 20.01 89.1212.06 3.4845 0.027 1.4755 25.02 87.57

12 4.2569 0.028 1.4683 30 85.99 Vin Iin I_Vdd Vout Iout Efficiency

20.2 0.4158 0.026 1.4959 5.01 87.8720.17 0.8215 0.027 1.491 10.02 89.4420.14 1.2403 0.028 1.4863 15.02 88.8720.11 1.6775 0.029 1.4815 20.01 87.5020.08 2.133 0.03 1.4767 25.02 85.9620.04 2.6063 0.03 1.4716 30 84.28

High Efficiency in 10A to 20A Operating Range

80.00

85.00

90.00

95.00

0 5 10 15 20 25 30 35

Output Current (A)

Effi

cien

cy (%

)

Vin = 7VVin = 12V

Vin = 20V

Conclusion: MAX1939 EV kit exhibits greater than 90% peak efficiency at lower load currents.

IN

BST

DH

LX

DL

PGND

FB

3.0V to 5.5V

INPUT

COMP

ILIM

C1

390pF

R1

47k

D1

CMPSH-3

C3

0.1uF

C6

22uF

6V

(3x)

N1A

1/2

FDS

6898A

N1B

1/2

FDS

6898A

L1

0.6uH

FDV0630

1953_1t8

RWY

12/14/04

2

3

1

7

6

9

8

10

5

U1

MAX1953 1.8V@5A

C4

22uF

6V

(3x)

R2

12.7k

R3

10.0k

GND4

C2

4.7uF

C5

1.2nF

R4

2.2


3.30 0.0311 1.791 0

2.97 3.41 1.788 5 0.883

3.30 3.06 1.788 5 0.885

3.62 2.79 1.788 5 0.885

4.50 2.25 1.788 5 0.883

5.53 1.85 1.786 5 0.873

20MHz BW <10mVpp

BILL OF MATERIALS

3.0V to 5.5V Input

1.8V @ 5A Output

12/14/04

1953_1t8






C4,C6 6 22uF 6V ceramic capacitor (1210)





L1 1 0.6uH 10A Inductor

Toko FDV0630-0R6


Fairchild FDS6898A


R2 1 12.7k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 2.2 Ohm 5% resistor (0603)


XENPAK APS power: 5V in 0.9V to 1.8V/0.2A to 1.8A out

Chien Nguyen 1 OF 2 2/27/03

Schematic

BOM:

IN

C O M P

B S T

L X

F B

0.9V-1.8V/ 0.2A-1.8A

P G N D

Vin4.5V to 5.5V

C 4

C 5

L 1

R 1A P S P o w e r

M A X 1 9 5 4

Figure 1: 5V In , 0 .9V to 1 .8V, 0 .2A to 1 .8A out

D H

D L

C 3

D 1H S D

G N D

R 2

R 4

Q 1

C 2C 1

XE

NP

AK

Tra

nsc

eive

r M

od

ule

Load

G N D

A P S S e n s e

A P S S e t

G N D S e n s e ( R T N )

T o 5 V i n

M o d u l e D e t e c t

R 3

R 5

7 5 0

1 K

7 8 7

3 0 K

1 3 0 k6 8 0 p F

1 0 u F

0 .22uF

0 .1uF

1 5 0 u F

1 8 m O h m

6 . 8 u H

1 K

S e e T a b l eR s e t

M M B T 3 9 0 4

C LC 6

1 8 p F

Q 3

Q 2

F D C 6 3 3 N

F D C 6 3 3 N

XENPAK APS power: 5V in 0.9V to 1.8V/0.2A to 1.8A out

Chien Nguyen 2 OF 2 2/27/03

COMPONENT DESCRIPTION VENDOR/PART NUMBER QTY

C1 Capacitor Ceramic: 0.22uF/16V / X7R TDK: C1608X7R1C224MT 1 C2 Capacitor Ceramic: 10uF/10V/X5R TDK: C3216X5R1A106M 1 C3 Capacitor Ceramic: 0.1uF/10 / X7R Kemet: C0603C104M8RAC 1 C4, CL Capacitor POS: 150uF/4V Sanyo: 4TPE150MI 2 C5 Capacitor Ceramic: 680pF/10V/X7R Kemet: C0603C681M8RAC 1 C6 Capacitor Ceramic: 18pF/25V / COG Kemet: C0603C180M3GAC 1 D1 Schottky diode, 30V, 100mA Central semiconductor CMPSH-3 1 L1 Inductor: 6.8 µH, 2.8A TDK:RLF7030-6R8M2R8 1 Q1, Q2 N Channel SupperSOT-6: 30V,

42mOhms Fairchild: FDC633N 2

R1 Resistor: 130 KOhns, 5% 1 R2 Resistor: 750, 5% 1 R3 Resis tor: 1K, 1% 1 R4 Resistor: 787, 1% 1 R5 Resistor: 30K, 5% 1 Q3 Transistor, NPN: MMBT3904 1

Notes: The circuit was tested with CL installed at the load through 6” of #16 AWG lead wires: 1) Load regulation: 9mV from 0.2A to 1.8A. 2) Line Regulation: ~ 0mV from 4.5V to 5.5V in. 3) Efficiency: ~88% at 5V in and 1.8V/1.8A out 4) Ripple and noise: 2.5mVp-p measured at CL; 15mVp-p measured at C4

12V to 6V Step-Down Converter with Fold-Back Current Limit Protection

VCC VLBST

DH

LX

DL

GND

FB

11.5V to 12.5V VIN

COMP

IN

C102.2nF

R4150k

C11uF10V D1

CMPSH-3

C50.1uF

C7330uF10V

MV-AX

N1B1/2

FDS6912A

N1A1/2

FDS6912A

L110uH

CEP125

8546_6aRWY

9/02/03

1

2

4

7

6

8

9

10

53

U1MAX8546

6V@3AVOUT

R166.5k

R210.0k

C121uF

C2,C310uF16VX5R

R83 R9

6.8

C13560pF

D2CMPSH-3

SHDN

R510k

R610k

Q1MMBT3904

R310C9

0.1uF

C41uF

Vin Iin Vout Iout Efficiency 12.01 0.009 6.053 0 11.46 1.671 6.049 3.01 0.951 12.01 1.571 6.049 3.01 0.965 12.54 1.505 6.048 3.01 0.965 20MHz BW 100mVpp

12V to 6V Step-Down Converter with Fold-Back Current Limit Protection


6V @ 3A Output 9/02/03

8546_6a DESIGNATION QTY DESCRIPTION C1 1 1uF 10V X5R ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MG C2,C3 2 10uF 16V X5R ceramic capacitor (1210)

Taiyo Yuden EMK325BJ106MN C4,C12 2 1uF 16V X5R ceramic capacitor (0805)

Taiyo Yuden EMK212BJ105MG C5,C9 2 0.1uF 10V ceramic capacitor (0603) C7 1 330uF 10V aluminum electrolytic cap

Sanyo 10MV330AX C10 1 2.2nF ceramic capacitor (0805) C13 1 560pF ceramic capacitor (0805) D1,D2 2 100mA 30V Schottky diode (SOT-23)


Sumida CEP125-100 N1 1 35m Ohm 30V Dual N-ch MOSFET (SO-8)

FDS6912A Q1 1 200mA 40V NPN transistor (SOT-23)

Fairchild MMBT3904 R1 1 66.5k Ohm 1% resistor (0805) R2 1 10.0k Ohm 1% resistor (0805) R3 1 10 Ohm 5% resistor (0805) R4 1 150k Ohm 5% resistor (0805) R5,R6 2 10k Ohm 5% resistor (0805) R8 1 3 Ohm 5% resistor (0603) R9 1 6.8 Ohm 5% resistor (0603) U1 1 MAX8546EUB (10-uMAX)

5V Input, Digitally Selectable 1V/1.2V Output at 6A

IN BST

DH

LX DL

PGND

FB

4.75V to 5.25V VIN

COMP

HSD

C2 270pF

R1 220k

D1 CMPSH-3

C4 0.1uF

C7 220uF 2.5V TPE (2x)

N1 1/2

Si4814DY

N1 1/2

Si4814DY

L1 1.5uH

DO3316P -152HC

1954_1c2 RWY

9/09/03

2

3

1

7 6

9

8

10 5

U1 MAX1954

1V@6A VOUT

C5 22uF 6V

X5R (2x)

R2 4.64k

R3 9.09k

GND 4

C3 22pF

C1 10uF 6V

X5R

R4 9.09k

N2 2N7002

R5 100k

1.2V 1V

R6 2.7

C6 1.2nF

ENABLE

N3 2N7002

R6 100k

Efficiency at 1V output Vin Iin Vout Iout Efficiency 5.01 0.020 1.001 0 4.48 1.643 0.994 6 0.810 5.00 1.471 0.995 6 0.812 5.52 1.328 0.995 6 0.814 20MHz BW 30mVpp Efficiency at 1.2V output Vin Iin Vout Iout Efficiency 5.01 0.024 1.206 0 4.47 1.932 1.199 6 0.833 5.01 1.724 1.200 6 0.834 5.52 1.564 1.200 6 0.834 20MHz BW 30mVpp


1V/1.2V @ 6A Output 9/09/03

1954_1c2 DESIGNATION QTY DESCRIPTION C1 1 10uF 6V X5R ceramic capacitor (1210)

Taiyo Yuden JMK325BJ106MN C2 1 270pF ceramic capacitor (0603) C3 1 22pF ceramic capacitor (0603) C4 1 0.1uF 16V X5R ceramic capacitor (0603)

Taiyo Yuden EMK107BJ104MA C5 2 22uF 6V X5R ceramic capacitor

Taiyo Yuden JMK325BJ226MM C6 1 1.2nF ceramic capacitor (0603) C7 2 220uF 2.5V polymer capacitor

Sanyo 2R5TPE220M D1 1 100mA 30V Schottky diode (SOT-23)


Coilcraft DO3316P-152HC N1 1 32m Ohm 30V N-ch Dual MOSFET (SO-8)

Siliconix Si4814DY N2,N3 1 2N7002 R1 1 220k Ohm 5% resistor (0603) R2 1 4.64k Ohm 1% resistor (0603) R3,R4 2 9.09k Ohm 1% resistor (0603) R5,R7 2 100k Ohm 5% resistor (0603) R6 1 2.7 Ohm 5% resistor (0603) U1 1 MAX1954EUB (10-uMAX)

91% Efficient 12V to 3.3V, 6A Step-down Converter

INBST

DH

LX

DL

PGND

FB

5V BIAS

COMP

HSD

C2470pF

R12.2M

D1CMPSH-3

C40.1uF

C71200uF

10VMV-AX

(2x)

N1FDS

6614A

N2FDS

6614A

L14.7uH

DO5022P-472HC

1954_3e3RWY

11/26/02

2

3

1

7

6

9

8

10

5

U1MAX1954

3.3V @ 6AVOUT

C510uF25VX5R(2x)

R231.6k

R310.0k

GND4

C312pF

C14.7uF10VX5R

10.8V to 13.2VVIN

R43

C6820pF

Vbias Ibias Vin Iin Vout Iout Efficiency 5.0356 0.0064 12.012 0.0118 3.3208 0 5.0363 0.0067 10.787 2.0145 3.3163 6.034 0.919 5.0363 0.0067 12.011 1.8150 3.3170 6.034 0.917 5.0364 0.0068 13.230 1.6524 3.3173 6.034 0.914 20MHz BW 50mVpp

91% Efficient 12V to 3.3V, 6A Step-down Converter


11/26/02 1954_3e3 DESIGNATION QTY DESCRIPTION C1 1 4.7uF 10V X5R ceramic capacitor (1206)

Taiyo Yuden LMK316BJ475ML C2 1 470pF ceramic capacitor (0603) C3 1 12pF ceramic capacitor (0603) C4 1 0.1uF 16V X5R ceramic capacitor (0603)

Taiyo Yuden EMK107BJ104MA C5 2 10uF 25V X5R ceramic capacitor (1812)

Taiyo Yuden TMK432BJ106MM C6 1 820pF ceramic capacitor (0603) C7 2 1200uF 10V aluminum electrolytic cap



Coilcraft DO5022P-472HC N1,N2 1 25 Ohm 30V N-ch MOSFET (SO-8)

Fairchild FDS6614A R1 1 2.2M Ohm 5% resistor (0603) R2 1 31.6k Ohm 1% resistor (0603) R3 1 10.0k Ohm 1% resistor (0603) R4 1 3 Ohm 5% resistor (0805) U1 1 MAX1954EUB (10-uMAX)

92% Efficient 3.3V to 1.8V, 5A Step-Down Converter

INBST

DH

LX

DL

PGND

FB

3.0V to 3.6VVIN

COMP

HSD

C1560pF

R1180k

D1CMPSH-3

C40.1uF

C9470uF

4VTPD

N1A1/2

FDS6898A

N1B1/2

FDS6898A

L11.5uH

DO3316P-152HC

1954_1k8RWY

5/22/03

2

3

1

7

6

9

8

10

5

U1MAX1954

1.8V@5AVOUT

C522uF6V

X5R(2x)

R212.7k

R310.0k

GND4

C34.7uF10VX5R

C61.2nF

R42.7

C215pF

C71uF10V

C810uF6V


92% Efficient 3.3V to 1.8V, 5A Step-Down Converter


5/22/03 1954_1k8 DESIGNATION QTY DESCRIPTION C1 1 560pF ceramic capacitor (0603) C2 1 15pF ceramic capacitor (0603) C3,C7 1 1uF 10V X5R ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MG C4 1 0.1uF ceramic capacitor (0603) C5 2 22uF 6V X5R ceramic capacitor (1210)

Taiyo Yuden JMK325BJ226MM C6 1 1.2nF ceramic capacitor (0603) C8 1 10uF 6V X5R ceramic capacitor (1206)

Taiyo Yuden JMK316BJ106ML C9 1 470uF 4V polymer capacitor

Sanyo 4TPD470M D1 1 100mA 30V Schottky diode (SOT-23)



Fairchild FDS6898A R1 1 180k Ohm 5% resistor (0603) R2 1 12.7k Ohm 1% resistor (0603) R3 1 10.0k Ohm 1% resistor (0603) R4 1 2.7 Ohm 5% resistor (0603) U1 1 MAX1954EUB (10-uMAX)

92% Efficient, 5V to 2.5V, 6A Step-down Converter

INBST

DH

LX

DL

PGND

FB

+4.5V to +5.5VVIN

COMP

HSD

C1680pF

R1910k

D1CMPSH-3

C40.1uF

C8680uF10V

MV-AX(2x)

N1A1/2

FDS6990A

N1B1/2

FDS6990A

L13.3uH

DO5022P-332HC

1954_2f5RWY

10/28/02

2

3

1

7

6

9

8

10

5

U1MAX1954

2.5V@4AVOUT

C5-C6470uF10VHC

R221.5k

R310.0k

GND4

C31uF10VX5R

C233pF

C71.2nF

R42.4

C90.1uF


92% Efficient, 5V to 2.5V, 6A Step-down Converter


10/28/02 1954_2f5 DESIGNATION QTY DESCRIPTION C1 1 6860pF ceramic capacitor (0603) C2 1 33pF ceramic capacitor (0603) C3 1 1uF 10V X5R ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MG C4,C9 2 0.1uF ceramic capacitor (0603) C5,C6 2 470uF 10V aluminum electrolytic capacitor

Sanyo 10MV470HC C7 1 1.2nF ceramic capacitor (0603) C8 2 680uF 10V aluminum electrolytic capacitor

Sanyo 10MV680AX D1 1 100mA 30V Schottky diode




90% Efficient, All Ceramic, 5V to 3.3V, 4A Step-down Converter

INBST

DH

LX

DL

PGND

FB


COMP

ILIM

C1180pF

R162k

D1CMPSH-3

C40.1uF

C722uF6V

X5R

N1A1/2

FDS8926A

N1B1/2

FDS8926A

L11.2uH

DO1813P-122HC

1953_3b3RWY

4/17/02

2

3

1

7

6

9

8

10

5

U1MAX1953 3.3V@4A

C510uF10VX5R(2x)

R231.6k

R310.0k

GND4

C34.7uF10VX5R

C222pF

C61nF

C822nF

Vin Iin Vout Iout Efficiency 5.0002 0.044 3.3082 0 4.4955 3.212 3.3023 4.00026 0.915 4.7476 3.041 3.2899 4.0027 0.912 5.0081 2.882 3.2813 4.0027 0.910 5.2502 2.752 3.2780 4.0027 0.908 5.501 2.630 3.2761 4.0027 0.906 Ripple 90mVpp

90% Efficient, All Ceramic, 5V to 3.3V, 4A Step-down Converter

BILL OF MATERIALS


4/17/02 1953_3b3 DESIGNATION QTY DESCRIPTION C1 1 180pF ceramic capacitor (0603) C2 1 22pF ceramic capacitor (0603) C3 1 4.7uF 10V ceramic capacitor (1206)


Taiyo Yuden LMK325BJ106MN C6 1 1nF ceramic capacitor (0603) C7 1 22uF 6V ceramic capacitor (1210)

Taiyo Yuden JMK325BJ226MM C8 1 22nF ceramic capacitor (0603) D1 1 100mA 30V Schottky diode


Coilcraft DO1813P-122HC N1 1 38m Ohm 30V Dual MOSFET (SO-8)


All Ceramic, 3V to 5.5V Input, 1.5V/2A Output Step-Down Converter

INBST

DH

LX

DL

PGND

FB

3.0V to 5.5V INPUT

COMP

ILIM

C1680pF

R122k

D1CMPSH-3

C30.1uF

C622uF6V

X5R(2x)

N11/2

FDS8926A

N11/2

FDS8926A

L12.2uH

DO3316P-222HC

1953_1j5RWY

1/23/03

2

3

1

7

6

9

8

10

5

U1MAX1953 1.5V@2A

C422uF6V

X5R

R28.87k

R310.0k

GND4

C24.7uF

R42.7

C51.2nF

Vin Iin Vout Iout Efficiency 3.2948 0.0281 1.5095 0 2.9967 1.1514 1.5084 2.010 0.879 3.3032 1.0450 1.5084 2.010 0.878 3.6036 0.9595 1.5072 2.010 0.876 4.4907 0.7810 1.5078 2.010 0.864 5.505 0.6486 1.4940 2.010 0.841 20MHz BW <10mVpp

All Ceramic, 3V to 5.5V Input, 1.5V/2A Output Step-Down Converter


1/23/03 1953_1j5 DESIGNATION QTY DESCRIPTION C1 1 680pF ceramic capacitor (0603) C2 1 4.7uF 10V X5R ceramic capacitor (1206)

Taiyo Yuden LMK316BJ475ML C3 1 0.1uF ceramic capacitor (0603) C4,C6 3 22uF 6V X5R ceramic capacitor (1210)

Taiyo Yuden JMK325BJ226MM C5 1 1.2nF ceramic capacitor (0603) D1 1 100mA 30V Schottky diode (SOT-23)


Coilcraft DO3316P-222HC N1 1 38m Ohm 20V N-ch MOSFET (SO-8)


Wide Input, Low Profile, 2.5V/10A Step-Down Converter

VCC VLBST

DH

LX

DL

GND

FB

8V to 20V VIN

COMP

IN

C110nF

R147k

C42.2uF10V

D1CMPSH-3

C50.1uF

C8680uF

4VTPB(2x)

N1IRF

7821

N2Si4888

DY

L12.2uH

DO5022P-222HC

8546_2c5RWY

5/27/03

1

2

4

7

6

8

9

10

53

U1MAX8546

2.5V@10AVOUT

R421.5k

R510.0k

C20.1uF

C610uF25VX5R(3x)

R310

R62.2

0.25W

C71.5nF

C30.1uF R2

10

Efficiency and ripple data> Vin Iin Vout Iout Efficiency 11.99 0.033 2.496 0 7.96 3.527 2.487 10.00 0.886 11.99 2.388 2.483 10.00 0.867 15.99 1.834 2.479 10.00 0.845 20.06 1.511 2.478 10.00 0.818 20MHz BW 100mVpp ripple

Wide Input, Low Profile, 2.5V/10A Step-Down Converter

BILL OF MATERIALS 8V to 20V Input

2.5V @ 10A Output 5/27/03

8546_2c5 DESIGNATION QTY DESCRIPTION C1 1 10nF ceramic capacitor (0805) C2,C3,C5 3 0.1uF 25V ceramic capacitor (0805) C4 1 2.2uF 10V ceramic capacitor (0805)

Taiyo Yuden LMK212BJ225MG C6 3 10uF 25V X5R ceramic capacitor

Taiyo Yuden TMK432BJ106MM C7 1 1.5nF ceramic capacitor (0805) C8 2 680uF 4V polymer capacitor

Sanyo 4TPB680M D1 1 100mA 30V Schottky diode (SOT-23)

Central Semi CMPSH-3 L1 1 2.2uH 20A Power inductor

Coilcraft DO5022P-222HC N1 1 12m Ohm 30V N-channel MOSFET (SO-8)

International Rectifier IRF7821 N2 1 10m Ohm 30V N-channel MOSFET (SO-8)

Siliconix Si4888DY R1 1 470k Ohm 5% resistor (0805) R2,R3 2 10 Ohm 5% resistor (0603) R4 1 21.5k Ohm 1% resistor (0805) R5 1 10.0k Ohm 1% resistor (0805) R6 1 2.2 Ohm 0.25W 5% resistor (1206) U1 1 MAX8546EUB (10-uMAX)

Wide Input, 91% Efficient, Low Profile, 5V/6A Step-Down Converter

VCC VLBST

DH

LX

DL

GND

FB

12V to 20V VIN

COMP

IN

C110nF

R1120k

C32.2uF10V

D2CMPSH-3

C40.1uF

C7220uF10VTPB(2x)

N1FDS

6690A

N2FDS

6690A

L16.0uH

DO5022P-602HC

8546_5cRWY

5/13/03

1

2

4

7

6

8

9

10

53

U1MAX8546

5V@6AVOUT

R453.6k

R510.0k

C20.1uF

C510uF25VX5R(2x)

R21

R31 R6

2.2

C61.2nF

D1CMPSH-3

Efficiency and ripple measurements Vin Iin Vout Iout Efficiency 14.99 0.028 5.049 0 11.94 2.706 5.036 6.00 0.935 15.00 2.175 5.038 6.00 0.927 20.05 1.650 5.041 6.00 0.914 20MHz BW 40mVpp ripple

Wide Input, 91% Efficient, Low Profile, 5V/6A Step-Down Converter

BILL OF MATERIALS 12V to 20V Input 5V @ 6A Output

5/13/03 8546_5c DESIGNATION QTY DESCRIPTION C1 1 10nF ceramic capacitor (0805) C2,C4 2 0.1uF 25V ceramic capacitor (0805) C3 1 2.2uF 10V ceramic capacitor (0805)

Taiyo Yuden LMK212BJ225MG C5 2 10uF 25V X5R ceramic capacitor

Taiyo Yuden TMK432BJ106MM C6 1 1.2nF ceramic capacitor (0805) C7 2 220uF 10V polymer capacitor

Sanyo 10TPB220M D1,D2 2 100mA 30V Schottky diode (SOT-23)

Central Semi CMPSH-3 L1 1 6.0uH 12A Power inductor

Coilcraft DO5022P-602HC N1,N2 2 17m Ohm 30V N-channel MOSFET (SO-8)

Fairchild FDS6690A R1 1 120k Ohm 5% resistor (0805) R2,R3 2 1 Ohm 5% resistor (0603) R4 1 53.6k Ohm 1% resistor (0805) R5 1 10.0k Ohm 1% resistor (0805) R6 1 2.2 Ohm 0.25W 5% resistor (1206) U1 1 MAX8546EUB (10-uMAX)

12V to 3.3V Converter is 94% Efficient, Fits in <1.5 Inch2 Input Voltage: 12V +-10% Output: 3.3V, Maximum load=6A Switching Frequency=400KHZ

MAX8554

U1

POK

V+

EN

HSD

REF

ILIM

FSEL

GND

PGND

OUT

FB

DL

LX

DH

BST

VL

C1510uF6.3V

C140.47uF

10v

D1 CMPSH-3

C130.47uF

10v

N1IRF7811W

L12.8uH

C1-C34.7 uF16VX3

10.8V < VIN < 13.2V

C9220uF

VOUT=3.3V @ 6A

3

10

2

1

7

5

6

8 4

9

13

12

16

15

14

11

N2IRF7811W

R74.99K

R822.6K

R3100K

C121uF16v

C162.2uF

C810uF6.3V

JU3 JU2

JU1

R1221K

R2A4.7

C2A680pF

Vin (V) I_in(A) Vout (V) Iout(A) Efficiency12.173 0.0224 3.3282 012.166 0.0517 3.3269 0.108 57.1212.161 0.0909 3.3257 0.25 75.2112.151 0.1607 3.3242 0.502 85.4612.141 0.2329 3.3221 0.757 88.9412.132 0.3038 3.3211 1.005 90.5612.112 0.4488 3.3198 1.518 92.7112.094 0.5883 3.3187 2.009 93.7112.072 0.7475 3.318 2.565 94.3112.055 0.8737 3.3175 3.003 94.5912.036 1.0204 3.317 3.507 94.7212.016 1.1785 3.3165 4.047 94.7811.998 1.3177 3.3161 4.51 94.6011.977 1.4787 3.3156 5.05 94.5411.96 1.6161 3.3152 5.51 94.5112.002 1.757 3.3146 6 94.3110.79 1.946 3.3102 6 94.5913.247 1.5987 3.3176 6 93.99

Efficiency Vs. Load Current

50.00

60.00

70.00

80.00

90.00

100.00

0 1 2 3 4 5 6

Amps

%

Bill of Materials: DESIGNATION

QTY DESCRIPTION

C1-C3 3 4.7uF 16V ceramic capacitors X5R (1206) TDK C3216X5R1C475K

C9 1 220µF 4V 18mOhm esr PosCap Sanyo 4TPE220MI

C8, C15 2 10uF 6.3V ceramic capacitor X5R (0805) Taiyo Yuden JMK212BJ106MG

C13, C14 2 0.47uF 10V ceramic capacitor X5R (0603) Taiyo Yuden LMK107BJ474MA

C16 1 2.2 µF 6.3V ceramic capacitors X5R (0603) Taiyo Yuden JMK212BJ225MA

C12 1 1 µF 16V ceramic capacitors (0805) X5R TDK C2012X5R1C105K

C2A 1 680pF GRM1885C1H681JA01B 0603, COG 50V Murata

D1 1 100mA 30V Schottky diode Central Semiconductor CMPSH-3

L1 1 2.8uH Inductor Sumida CEP123D38 -2R8MC

N1, N2 1 International Rectifier IRF7811W SO8 R1 1 221K, 1% SMD resistor (0603) R7 1 4.99kΩ, 1% resistor (0603) R3 1 100K, 5% SMD resistor (0603) R8 1 22.6K, 1% SMD resistor (0603) R2A 1 4.7Ω, 5% resistor (0805) JU1 1 Shorted, 3 pin header JU2, JU3 2 Open, 3 pin header U1 1 MAX8554EEE (16 pin QSOP)

12V to 2.5V Converter is 93% Efficient, Fits in <1.5 Inch2 Input Voltage: 12V +-10% Output: 2.5V, 6A Switching Frequency=400KHZ

MAX8554

U1

POK

V+

EN

HSD

REF

ILIM

FSEL

GND

PGND

OUT

FB

DL

LX

DH

BST

VL

C1510uF6.3V

C140.47uF

10v

D1 CMPSH-3

C130.47uF

10v

N1IRF7811W

L12.5uH

C1-C34.7 uF16VX3

10.8V < VIN < 13.2V

C9220uF

VOUT=2.5V @ 6A

3

10

2

1

7

5

6

8 4

9

13

12

16

15

14

11

N2IRF7811W

R75.11K

R816.2K

R3100K

C121uF16v

C162.2uF

C810uF6.3V

JU1

R1301K

R2A4.7

C2A680pF

Bill of Materials: DESIGNATION

QTY DESCRIPTION

C1-C3 3 4.7uF 16V ceramic capacitors X5R (1206) TDK C3216X5R1C475K

C9 1 220µF 4V 15mOhm esr PosCap Sanyo 4TPE220MF

C8, C15 2 10uF 6.3V ceramic capacitor X5R (0805) Taiyo Yuden JMK212BJ106MG

C13, C14 2 0.47uF 10V ceramic capacitor X5R (0603) Taiyo Yuden LMK107BJ474MA

C16 1 2.2 µF 6.3V ceramic capacitors X5R (0603) Taiyo Yuden JMK212BJ225MA

C12 1 1 µF 16V ceramic capacitors (0805) X5R TDK C2012X5R1C105K

C2A 1 680pF GRP155R71H681KA01B (0603), X7R, 50V Murata

D1 1 100mA 30V Schottky diode Central Semiconductor CMPSH-3

L1 1 2.5uH Inductor Sumida CEP125-2R5 N1, N2 1 International Rectifier IRF7811W SO8 R1 1 301K, 1% SMD resistor (0603) R7 1 5.11kΩ, 1% resistor (0603) R3 1 100K, 5% SMD resistor (0603) R8 1 16.2K, 1% SMD resistor (0603) R2A 1 4.7Ω, 5% resistor (0805) JU1 1 Shorted, 3 pin header JU2, JU3 2 Open, 3 pin header U1 1 MAX8554EEE (16 pin QSOP)

MEASURED DATA:

Vin(v) I_in(A) Vout(v) Iout(A) Efficiency12.194 0.0193 2.4853 012.192 0.0403 2.4843 0.103 52.0812.188 0.0707 2.483 0.25 72.0412.183 0.1237 2.481 0.502 82.6412.177 0.1773 2.479 0.75 86.1212.171 0.2309 2.4781 1.001 88.2712.159 0.3381 2.4771 1.506 90.7512.147 0.4461 2.4761 2.012 91.9412.135 0.5526 2.4755 2.508 92.5812.124 0.6607 2.4753 3.009 92.9812.112 0.7685 2.4748 3.504 93.1612.101 0.8913 2.4738 4.065 93.2412.089 0.9872 2.4729 4.501 93.2712.09 0.9873 2.473 4.501 93.2512.078 1.1 2.4722 5.008 93.1912.066 1.2102 2.4713 5.5 93.0812.053 1.332 2.4703 6.04 92.9410.779 1.4822 2.4679 6.04 93.3013.237 1.2188 2.4724 6.04 92.56

Efficiency Vs. Load

50.00

60.0070.00

80.00

90.00100.00

0 1 2 3 4 5 6Amps

%

93% Efficient Wide Input Step-Down Regulator with Fold-Back Current Limit

VCC VLBST

DH

LX

DL

GND

FB

11V to 23V VIN

COMP

IN

C110nF

R133k

C32.2uF10V

D1CMPSH-3

C40.1uF

C8220uF10V

MV-AX

N11/2

FDS6930A

N11/2

FDS6930A

L122uH

CDRH127-220

8546_3a7RWY

1/15/04

1

2

4

7

6

8

9

10

53

U1MAX8546

[email protected]

R436.5k

R510.0k

C20.1uF

C5220uF35V

MV-AX

R24.7R34.7 R6

4.7

C6330pF

C70.1uF

Efficiency and Ripple Measurements: Vin Iin Vout Iout Efficiency 17.01 0.007 3.66 0 10.98 0.53 3.62 1.5 0.933 17.01 0.34 3.58 1.5 0.929 23.07 0.25 3.59 1.5 0.934 Ripple 100mVpp (20MHz BW)

93% Efficient Wide Input Step-Down Regulator with Fold-Back Current Limit

BILL OF MATERIALS 11V to 23V Input

3.7V @ 1.5A Output 1/15/04

8546_3a7 DESIGNATION QTY DESCRIPTION C1 1 10nF ceramic capacitor (0603) C2,C4.C7 3 0.1uF ceramic capacitor (0603) C3 1 2.2uF 10V ceramic capacitor (0805)


Sanyo 35MV220AX C6 1 330pF ceramic capacitor (0603) C8 1 220uF 10V aluminum electrolytic capacitor


Central Semi CMPSH-3 L1 1 22uH 3.6A Power inductor

Sumida CDRH127-220 N1 1 55m Ohm 30V N-channel MOSFET (SO-8)

Fairchild FDS6930A R1 1 33k Ohm 5% resistor (0603) R2,R3 2 4.7 Ohm 5% resistor (0603) R4 1 36.5k Ohm 1% resistor (0603) R5 1 10.0k Ohm 1% resistor (0603) R6 1 4.7 Ohm 5% resistor (0603) U1 1 MAX8546EUB (10-uMAX)

C110uF10V

C30.1uF

C40.22uF

L110uH2.3A

C210uF10V

1

8

6

2

4

GND3

10

7 5

9

REF

BP

LIM

SHDN

IN LX

FBSYNC/PWM

PGND

R120.0k1%

R213.0k1%

U1MAX1692

+3.18V @ 320mAVIN

4.5V to 5.25V

RWY7/19/00

USB to 3.18V

C547pF

GSp01Q1a BILL OF MATERIALS 4.5 to 5.25V Input

3.18V @ 320mA Output07/19/00

BOM REV: PRELIM (P1) BOARD REV: P1DESIGNATION QTY DESCRIPTION Est. CostC1, C2 2 10uF 10V ceramic capacitor (1210)

TAIYO YUDEN LMK325BJ106MN0.25

C3 1 0.1uF ceramic capacitor (0805) 0.02C4 1 0.22uF ceramic capacitor (0805) 0.02C5 1 47pF ceramic capacitor (0805) 0.02L1 1 10uH Power Inductor

Coilcraft DS3316P-1030.25

R1 1 20.0k Ohm 1% resistor (0805) 0.01

R2 1 13.0k Ohm 1% resistor (0805) 0.01

U1 1 MAX1692EUB (10-uMAX) 1.25

Vin (V) Iin (A) Vout (V) Iout (A) Efficiency4.501 0.243 3.1249 0.32 0.9145.256 0.21 3.130 0.32 0.907

IN

BST

DH

LX

DL

PGND

FB

3.0V to 3.6V

INPUT

COMP

ILIM

C1

470pF

R1

20k

D1

CMPSH-3

C3

0.47uF

C6

22uF

6V

X5R

(3x)

N1

FDS

6570A

N2

FDS

6570A

L1

0.36uH

CDEP105

-0R3

1953_1h5

RWY

12/27/02

2

3

1

7

6

9

8

10

5

U1

MAX1953 1.5V@9A

R2

8.87k

R3

10.0k

GND4

C2

4.7uF

C5

2.7nF

C4

22uF

6V

X5R

(5x)

R4

1.8


3.3078 0.0965 1.5106 0

2.9920 5.470 1.5065 9.006 0.829

3.3020 4.948 1.5065 9.006 0.830

3.6066 4.525 1.5065 9.006 0.831

20mVpp

BILL OF MATERIALS

3.0V to 3.6V Input

1.5V @ 9A Output

12/27/02

1953_1h5












Sumida CDEP105-0R3

N1,N2 2 10m Ohm 20V N-ch MOSFET (SO-8)

Fairchild FDS65790A


R2 1 8.87k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 1.8 Ohm 5% resistor (0603)


IN

BST

DH

LX

DL

PGND

FB

3.0V to 5.5V

INPUT

COMP

ILIM

C1

560pF

R1

33k

D1

CMPSH-3

C3

0.1uF

C6

22uF

6V

(2x)

N1A

1/2

FDS

6890A

N1B

1/2

FDS

6890A

L1

1.0uH

DO3316P

-102HC

1953_1p8

RWY

5/09/03

2

3

1

7

6

9

8

10

5

U1

MAX1953 1.8V@3A

C4

22uF

6V

(2x)

R2

12.7k

R3

10.0k

GND4

C2

4.7uF

C5

1.5nF

R4

2.7

1953_1p8b 5/14/03

#1


3.30 0.035 1.811 0

2.99 2.018 1.809 3.010 0.902

3.31 1.828 1.810 3.010 0.900

3.60 1.679 1.809 3.010 0.901

4.50 1.361 1.811 3.010 0.890

5.00 1.234 1.809 3.010 0.883

5.51 1.128 1.805 3.010 0.874

20MHz BW <10mVpp

#2


3.30 0.035 1.812 0

2.99 2.029 1.812 3.010 0.899

3.30 1.835 1.812 3.010 0.901

3.61 1.680 1.812 3.010 0.899

4.50 1.362 1.813 3.010 0.890

5.00 1.235 1.812 3.010 0.883

5.52 1.132 1.811 3.010 0.872

20MHz BW <10mVpp

BILL OF MATERIALS

3.0V to 5.5V Input

1.8V @ 3A Output

5/09/03

1953_1p8














Fairchild FDS6890A


R2 1 12.7k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 2.7 Ohm 5% resistor (0805)


IN

BST

DH

LX

DL

PGND

FB

3.0V to 5.5V

INPUT

COMP

ILIM

C1

560pF

R1

33k

D1

CMPSH-3

C3

0.1uF

C6

22uF

6V

(2x)

N1A

1/2

FDS

6890A

N1B

1/2

FDS

6890A

L1

1.0uH

DO3316P

-102HC

1953_1p8

RWY

5/09/03

2

3

1

7

6

9

8

10

5

U1

MAX1953 1.8V@3A

C4

22uF

6V

(2x)

R2

12.7k

R3

10.0k

GND4

C2

4.7uF

C5

1.5nF

R4

2.7

1953_1p8b 5/14/03

#1


3.30 0.035 1.811 0

2.99 2.018 1.809 3.010 0.902

3.31 1.828 1.810 3.010 0.900

3.60 1.679 1.809 3.010 0.901

4.50 1.361 1.811 3.010 0.890

5.00 1.234 1.809 3.010 0.883

5.51 1.128 1.805 3.010 0.874

20MHz BW <10mVpp

#2


3.30 0.035 1.812 0

2.99 2.029 1.812 3.010 0.899

3.30 1.835 1.812 3.010 0.901

3.61 1.680 1.812 3.010 0.899

4.50 1.362 1.813 3.010 0.890

5.00 1.235 1.812 3.010 0.883

5.52 1.132 1.811 3.010 0.872

20MHz BW <10mVpp

BILL OF MATERIALS

3.0V to 5.5V Input

1.8V @ 3A Output

5/09/03

1953_1p8














Fairchild FDS6890A


R2 1 12.7k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 2.7 Ohm 5% resistor (0805)


IN

BST

DH

LX

DL

PGND

FB

3.135V to 3.465V

INPUT

COMP

ILIM

C1

330pF

R1

30k

D1

CMPSH-3

C4

0.1uF

C7

22uF

6V

X5R

N1A

1/2

FDS

8926A

N1B

1/2

FDS

8926A

L1

1.0uH

FDV0630

1953_1q8

RWY

1/07/04

2

3

1

7

6

9

8

10

5

U1

MAX1953 1.8V@2A

R2

12.7k

R3

10.0k

GND4

C3

4.7uF

C6

1.5nF

C5

22uF

6V

X5R

(2x)

R4

2.7

C2

10pF


3.30 0.03 1.808 0

3.10 1.29 1.807 2.00 0.904

3.31 1.21 1.807 2.00 0.902

3.51 1.14 1.806 2.00 0.903

20MHz BW <10mVpp

BILL OF MATERIALS


1.8V @ 2A Output

1/07/04

1953_1q8












L1 1 1uH 7.7A Power Inductor

Toko FDV0630-1R0


Fairchild FDS8926A


R2 1 12.7k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 2.7 Ohm 5% resistor (0603)


IN

BST

DH

LX

DL

PGND

FB

10.8V to 13.2V

VHSD

COMP

HSD

C14

1.5nF

R3

68k

D1

CMPSH-3

C9

0.22uF

C10-C13

470uF

2.5V

TPD

(4x)

N1,N2

IRF

7821

(2x)

N3,N4

IRF

7832

(2x)

L1

0.68uH

FDA1254

1954_1l8

RWY

12/12/03

2

3

1

7

6

9

8

10

5

U1

MAX19541.8V@25A

VOUT

C2-C8

10uF

25V

X5R

(7x)

R1

12.7k

R2

10.0k

GND4

C1

4.7uF

10V

X5R

C15

68pF

C16

2.2nF

R4

1

D2

CMSH5

-4

R5

2.2

5V

VIN

MAXIM CONFIDENTIAL


12.00 0.029 1.816 0

10.78 4.76 1.798 25 0.876

12.00 4.29 1.797 25 0.873

13.22 3.89 1.797 25 0.874

20MHz BW 30mVpp

BILL OF MATERIALS


1.8V @ 25A Output

12/12/03

1954_1l8




C2-C8 7 10uF 25V X5R ceramic capacitor (1210)



C10-C13 4 470uF 2.5V polymer capacitor

Sanyo 2R5TPD470M


Kemet C0603C152K8RAC


Kemet C0603C680K5GAC


Kemet C0603C222K8RAC






Toko FDA1254-R68

N1,N2 2 12.5m Ohm 30V N-ch MOSFET (SO-8)

International Rectifier IRF7821



R1 1 12.7k Ohm 1% resistor (0603)

R2 1 10.0k Ohm 1% resistor (0603)


R4 1 1 Ohm 5% resistor (0603)

R5 1 2.2 Ohm 5% resistor (1206)


IN

BST

DH

LX

DL

PGND

FB

3.0V to 5.5V

VIN

COMP

HSD

C1

820pF

R1

180k

D1

CMPSH-3

C4

0.1uF

C7

680uF

2.5V

TPD

N1A

1/2

FDS

6890A

N1B

1/2

FDS

6890A

L1

2.2uH

DO3316P

-222HC

1954_1a0

RWY

4/25/03

2

3

1

7

6

9

8

10

5

U1

[email protected]

VOUT

C5

22uF

6V

X5R

R2

3.16k

R3

10.0k

GND4

C3

4.7uF

10V

X5R

C6

1.5nF

R4

2.4

C2

18pF


3.31 0.021 1.048 0

2.99 1.377 1.045 3.5 0.888

3.31 1.247 1.044 3.5 0.885

3.61 1.145 1.045 3.5 0.882

4.50 0.922 1.045 3.5 0.877

5.00 0.833 1.043 3.5 0.872

5.52 0.757 1.041 3.5

20MHz BW 40mVpp

BILL OF MATERIALS

3.0V to 5.5V Input

1.05V @ 3.5A Output

4/25/03

1954_1a0











Sanyo 2R5TPD680M






Fairchild FDS6890A


R2 1 3.16k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 2.4 Ohm 5% resistor (0603)


IN

BST

DH

LX

DL

PGND

FB

+5V

VIN

COMP

HSD

C2

560pF

R1

820k

D1

CMPSH-3

C4

0.1uF

C7

680uF

4V

TPB

N1

1/2

FDS

6930A

N1

1/2

FDS

6930A

L1

6.8uH

DO3316P

-682

1954_1a9

RWY

3/03/03

2

3

1

7

6

9

8

10

5

U1

MAX1954

[email protected]

VOUT

C5

22uF

20V

SVP

R2

14.0k

R3

10.0k

GND4

+7V to +13.2V

VHSD

C1

4.7uF

10V

X5R

C3

15pF

R4

4.3

C6

470pF

Vin Iin Vhsd Ihsd Vout Iout Efficiency

5.0127 0.0036 8.006 0.0066 1.895 0

5.0126 0.0040 6.984 0.7654 1.895 2.5059 0.885

5.0126 0.0040 8.014 0.6686 1.894 2.5059 0.883

5.0127 0.0038 12.074 0.4470 1.895 2.5060 0.877

5.0127 0.0038 13.239 0.4087 1.896 2.5060 0.875

20MHz BW 30mVpp

BILL OF MATERIALS

7V to 13.2V Input

1.9V @ 2.5A Output

3/03/03

1954_1a9








C5 1 22uF 20V polymer capacitor

Sanyo 20SVP22M



Sanyo 4TPB680M






Fairchild FDS6930A


R2 1 14.0k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 4.3 Ohm 5% resistor (0603)


IN

BST

DH

LX

DL

PGND

FB

4.5V to 5.5V

VIN

COMP

HSD

C2

1nF

R1

120k

D1

CMPSH-3

C4

0.1uF

C7

470uF

4V

TPE

N1A

1/2

FDS

6890A

N1B

1/2

FDS

6890A

L1

2.7uH

DO3316P

-272HC

1954_1d2

RWY

11/26/03

2

3

1

7

6

9

8

10

5

U1

MAX1954

[email protected]

VOUT

C5

22uF

6V

X5R

R2

5.11k

R3

10.0k

GND4

C3

100pF

C1

10uF

6V

X5R

R4

4.7

C6

1.5nF

Q2

MMBT

3904

R5

10k

R6

10k

ENTO

3.3V

D2

EC10

QS03L


5.01 0.027 1.216 0

4.48 1.073 1.214 3.5 0.884

5.01 0.963 1.213 3.5 0.880

5.51 0.878 1.212 3.5 0.877

20MHz BW 30mVpp

1.2V should be enabled at least 2msec before 3.3V.

BILL OF MATERIALS

4.5V to 5.5V Input

1.2V @ 3.5A Output

11/26/03

1954_1d2












Sanyo 4TPE470ML




Nihon EC10QS03L



N1 1 18m Ohm 30V N-ch Dual MOSFET (SO-8)

Fairchild FDS6890A

Q2 1 200mA 30V NPN transistor (SOT-23)

Fairchild MMBT3904


R2 1 5.11k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 4.7 Ohm 5% resistor (0603)

R5,R6 2 10k Ohm 5% resistor (0603)


IN

BST

DH

LX

DL

PGND

FB

4.5V to 5.5V

VIN

COMP

HSD

C1

820pF

R1

1M

D1

CMPSH-3

C4

0.1uF

C7

820uF

10V

MV-AX

(2x)

N1A

1/2

FDS

6990A

N1B

1/2

FDS

6990A

L1

3.3uH

DO5022P

-332HC

1954_1e5

RWY

12/30/02

2

3

1

7

6

9

8

10

5

U1

MAX19541.5V @ 4A

VOUT

C5

820uF

10V

MV-AX

(2x)

R2

8.87k

R3

10.0k

GND4

C3

1uF

10V

X5R

C2

39pF

C6

1.2nF

R4

2.7

C8

0.1uF


5.0073 0.0172 1.5064 0

4.4900 1.5155 1.5041 4.009 0.886

5.0078 1.3591 1.5043 4.009 0.886

5.522 1.2327 1.5041 4.009 0.886

20MHz BW 40mVpp

BILL OF MATERIALS

4.5V to 5.5V Input

1.5V @ 4A Output

12/30/02

1954_1e5









Sanyo 10MV820AX







Fairchild FDS6990A

R1 1 1M Ohm 5% resistor (0603)

R2 1 8.87k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 2.7 Ohm 5% resistor (0603)


IN

BST

DH

LX

DL

PGND

FB

+3.0V to +3.6V

VIN

COMP

HSD

C1

820pF

R1

220k

D1

CMPSH-3

C4

0.1uF

C7

680uF

4V

TPB

(2x)

N1

Si

4866DY

N2

Si

4866DY

L1

1.0uH

CEP125

-1R0

1954_1e8

RWY

11/19/02

2

3

1

7

6

9

8

10

5

U1

MAX19541.8V@10A

VOUT

C5

470uF

6V

TPB

(2x)

R2

12.7k

R3

10.0k

GND4

C3

4.7uF

10V

X5R

C2

47pF

R4

1.8

C6

2.2nF


3.2969 0.0275 1.8109 0

2.9900 6.623 1.8075 10.019 0.914

3.3014 6.012 1.8080 10.020 0.913

3.6020 5.520 1.8083 10.020 0.911

20MHz BW 50mVpp

BILL OF MATERIALS

3V to 3.6V Input

1.8V @ 10A Output

11/21/02

1954_1e8









Sanyo 6TPB470M



Sanyo 4TPB680M



L1 1 1uH 20A Inductor

Sumida CEP125-1R0


Siliconix Si4866DY


R2 1 12.7k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 1.8 Ohm 5% resistor (0805)


IN

BST

DH

LX

DL

PGND

FB

3V to 3.6V

VIN

COMP

HSD

C1

1.8nF

R1

68k

D1

BAT-54

C4

0.1uF

C8

1000uF

4V

MB-EXR

N1

Si4866DY

N2

Si4866DY

L1

1.2uH

CDEP105-H

1954_1f2

RWY

1/27/04

2

3

1

7

6

9

8

10

5

U1

MAX1954A

1.2V@7A

VOUT

C6

22uF

6V

X5R

R2

5.11k

R3

10.0k

GND4

C2

180pF

C3

10uF

6V

X5R

R4

2.7

C7

3.3nF

C5

820uF

6V

MB-EXR


3.31 0.033 1.207 0

2.98 3.21 1.202 7 0.880

3.30 2.90 1.201 7 0.879

3.62 2.64 1.201 7 0.880

20MHz BW 60mVpp

BILL OF MATERIALS

3V to 3.6V Input

1.2V @ 7A Output

1/27/04

1954_1f2








C5 1 820uF 6V polymer electrolytic capacitor

Sanyo 6MB820EXR




C8 1 1000uF 4V polymer electrolytic capacitor

Sanyo 4MB1000EXR


BAT-54


Sumida CDEP105-1R2-H


R2 1 5.11k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 2.7 Ohm 5% resistor (0603)

U1 1 MAX1954AEUB (10-uMAX)

IN

BST

DH

LX

DL

PGND

FB

3.0V to 5.5V

VIN

COMP

HSD

C1

1nF

R1

27k

D1

CMPSH-3

C3

0.1uF

C7

22uF

6V

X5R

(2x)

N1A

1/2

FDS

8926A

N1B

1/2

FDS

8926A

L1

6.0uH

DO5022P

-602HC

1954_1f5

RWY

1/23/03

2

3

1

7

6

9

8

10

5

U1

MAX19541.5V @ 2A

VOUT

C4

22uF

6V

X5R

R2

8.87k

R3

10.0k

GND4

C2

4.7uF

10V

X5R

C5

1.2nF

R4

2.7


3.2980 0.0122 1.5071 0

2.9932 1.0991 1.5056 2.010 0.920

3.2942 0.9993 1.5057 2.010 0.919

3.6076 0.9135 1.5057 2.010 0.918

4.5046 0.7355 1.5053 2.010 0.913

5.514 0.6067 1.5021 2.010 0.903

20MHz BW 10mVpp

BILL OF MATERIALS

3.0V to 5.5V Input

1.5V @ 2A Output

1/23/03

1954_1f5














Fairchild FDS8926A


R2 1 8.87k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 2.7 Ohm 5% resistor (0603)


IN

BST

DH

LX

DL

PGND

FB

+4.5V to +5.5V

VIN

COMP

HSD

C1

680pF

R1

75k

D1

CMPSH-3

C4

0.1uF

C7

220uF

4V

SP

N1

FDS

6690A

N2

FDS

6690A

L1

2uH

CDEP105

-2R0

1954_1f8

RWY

12/19/02

2

3

1

7

6

9

8

10

5

U1

[email protected]

VOUT

C5

22uF

6V

X5R

(2x)

R2

12.7k

R3

10.0k

GND4

C3

1uF

10V

X5R

C6

1.2nF

R4

2.7

C2

22pF


4.9921 0.0246 1.8088 0

4.4980 2.9554 1.8046 6.515 0.884

4.9955 2.6618 1.8049 6.515 0.884

5.501 2.4183 1.8050 6.515 0.884

20MHz BW 40mVpp

BILL OF MATERIALS

4.5V to 5.5V Input

1.8V @ 6.5A Output

12/20/02

1954_1f8











Sanyo 4TPE220MF




Sumida CDEP105-2R0


Fairchild FDS6690A


R2 1 12.7k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 2.7 Ohm 5% resistor (0603)


1954_1g2

RWY

7/28/04

9

1

10

2

4 3

5

7

6

8

HSD

BST

COMP

IN

GND FB

PGND

DL

DH

LX

U1

MAX1954A

4.5V to 5.5V

VIN

1.2V @ 6A

VOUTC2

68pF

R1

100k

C1

1nF

C7

1nF

N1

FDS

6690L1

2.2uH

D1

BAT54C5

470uF

10V

SP

C6

22uF

10V

X5R

R2

5.11k

R3

10.0k

R4

2.7

C4

0.1uF

C8

560uF

4V

SP

C3

4.7uF

6V

X5R

N2

FDS

6690C9

0.1uF


5.007 0.0165 1.208 0

4.4935 1.8761 1.204 6 0.861

5.009 1.6674 1.203 6 0.866

5.522 1.5084 1.203 6 0.867

20MHz BW 30mVpp

BILL OF MATERIALS

4.5V to 5.5V Input

1.2V @ 6A Output

7/28/04

1954_1g2








C5 1 470uF 10V organic semiconductor capacitor

Sanyo OS-CON 10SP470M


Taiyo Yuden LMK325BJ226MM

C8 1 560uF 4V organic semiconductor capacitor

Sanyo OS-CON 4SP560M


BAT54

L1 1 2.2uH 22A Power Inductor

Pulse Engineering PG0077.202


Fairchild FDS6690


R2 1 5.11k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)

R4 1 2.7 Ohm 5% resistor (0603)

U1 1 MAX1954AEUB (10-uMAX)

VCC VL

BST

DH

LX

DL

GND

FB

18V to 24V

VIN

COMP

IN

C1

3.9nF

R1

220k

C3

2.2uF

10V

D2

CMPSH-3

C4

0.1uF

C7

220uF

35V

MV-AX

N1

1/2

FDS

6930A

N1

1/2

FDS

6930A

L1

33uH

DO3340P

-333

8546_12c

RWY

10/07/03

1

2

4

7

6

8

9

10

53

U1

MAX854612V@2A

VOUT

C5

220uF

35V

MV-AX

R3

140k

R4

10.0k

C2

0.1uF C6

1uF

50V

X7RD1

CMPSH-3

R2

2.2


21.07 0.012 11.88 0

18.00 1.38 11.75 2 0.946

21.09 1.18 11.75 2 0.944

24.06 1.04 11.77 2 0.941

20MHz BW 30mVpp

BILL OF MATERIALS

18V to 24V Input

12V @ 2A Output

10/07/03

8546_12c







Sanyo 35MV220AX

D1,D2 2 100mA 30V Schottky diode (SOT-23)


L1 2 33uH 4A Power inductor


N1 1 55m Ohm Dual N-chan MOSFET (SO-8)

Fairchild FDS6930A


R2 1 2.2 Ohm 5% resistor (0603)


R4 1 10.0k Ohm 1% resistor (0805)


VCC VL

BST

DH

LX

DL

GND

FB

18V to 20V

VIN

COMP

IN

C1

3.3nF

R1

220k

C3

2.2uF

10V

D2

CMPSH-3

C4

0.1uF

C7

220uF

35V

MV-AX

(2x)

N1

1/2

FDS

6990A

N1

1/2

FDS

6990A

L1

15uH

DO3340P

-153

8546_12b

RWY

10/07/03

1

2

4

7

6

8

9

10

53

U1

MAX854612V@4A

VOUT

C5

220uF

35V

MV-AX

(2x)

R3

140k

R4

10.0k

C2

0.1uF C6

1uF

50V

X7RD1

CMPSH-3

R2

2.2


19.009 0.021 11.87 0

18.00 2.76 11.81 4 0.951

19.02 2.63 11.81 4 0.944

20.03 2.50 11.81 4 0.943

20MHz BW 20mVpp

BILL OF MATERIALS

18V to 20V Input

12V @ 4A Output

10/07/03

8546_12b







Sanyo 35MV220AX



L1 2 15uH 7A Power inductor


N1 1 23m Ohm Dual N-chan MOSFET (SO-8)

Fairchild FDS6990A


R2 1 2.2 Ohm 5% resistor (0603)


R4 1 10.0k Ohm 1% resistor (0805)


VCC VL

BST

DH

LX

DL

GND

FB

19V

VIN

COMP

IN

C1

2.7nF

R1

91k

C3

2.2uF

10V

D2

CMPSH-3

C4

0.1uF

C7

220uF

10V

T495

(2x)

N1

1/2

FDS

6990A

N1

1/2

FDS

6990A

L1

6.0uH

DO5022P

-602

8546_5b

RWY

3/25/03

1

2

4

7

6

8

9

10

53

U1

MAX85465V@6A

VOUT

R2

53.6k

R3

10.0k

C2

0.1uF

C5

10uF

25V

X5R

(2x)

R6

2.7

C6

1.2nF

D1

CMPSH-3


19.002 0.0259 5.06 0

19.028 1.7328 5.05 6.007 0.920

20MHz BW 80mVpp

BILL OF MATERIALS

19V Input

5V @ 6A Output

3/25/03

8546_5b



C2,C4 2 0.1uF ceramic capacitor (0805)






C7 2 220uF 10V tantalum capacitor

Kemet T495X227M010AS



L1 1 6.0uH 12A Power inductor


N1 1 23m Ohm 30V N-channel MOSFET (SO-8)

Fairchild FDS6990A


R2 1 53.6k Ohm 1% resistor (0805)

R3 1 10.0k Ohm 1% resistor (0805)

R4 1 2.7 Ohm 5% resistor (0805)


VCC VL

BST

DH

LX

DL

GND

FB

11.4V to 12.6V

VIN

COMP

IN

C1

6.8nF

R1

33k

C3

2.2uF

10V

D2

CMPSH-3

C4

0.1uF

C7

220uF

10V

T495

(2x)

N1

1/2

FDS

6990A

N1

1/2

FDS

6990A

L1

6.0uH

DO5022P

-602

8546_5a

RWY

3/11/03

1

2

4

7

6

8

9

10

53

U1

MAX85465V@5A

VOUT

R4

53.6k

R5

10.0k

C2

0.1uF

C5

15uF

25V

TQC

(2x)

R2

3.3

R3

3.3 R6

2.7

C6

1.2nF

D1

CMPSH-3


12.013 0.0217 5.03 0

11.378 2.3565 5.00 5.0027 0.933

12.010 2.2382 5.00 5.0032 0.931

12.625 2.1329 5.00 5.0032 0.929

20MHz BW 70mVpp

BILL OF MATERIALS


5V @ 5A Output

3/11/03

8546_5a







Sanyo 25TQC15M


C7 2 220uF 10V tantalum capacitor







Fairchild FDS6990A


R2,R3 2 3.3 Ohm 5% resistor (0603)

R4 1 53.6k Ohm 1% resistor (0805)

R5 1 10.0k Ohm 1% resistor (0805)

R6 1 2.7 Ohm 5% resistor (0805)


VCC VL

BST

DH

LX

DL

GND

FB

8V to 22V

VIN

COMP

IN

C1

6.8nF

R1

82k

C3

2.2uF

10V

D1

CMPSH-3

C4

0.1uF

C7

470uF

10V

MV-AX

N1

1/2

FDS

6930A

N1

1/2

FDS

6930A

L1

22uH

CDRH127

-220

8546_3f3

RWY

2/19/04

1

2

4

7

6

8

9

10

53

U1

[email protected]

VOUT

R4

31.6k

R5

10.0k

C2

0.1uF

50V

C5

100uF

35V

MV-AX

R2

4.7

R3

4.7 R6

4.7

C6

330pF

C8

0.1uF


15.02 0.006 3.29 0

7.98 0.53 3.27 1.21 0.936

12.05 0.35 3.26 1.21 0.935

15.03 0.29 3.26 1.21 0.905

22.00 0.20 3.26 1.21 0.897

20MHz BW 35mVpp

BILL OF MATERIALS

8V to 22V Input

3.3V @ 1.2A Output

2/19/04

8546_3f3








Sanyo 35MV100AX



Sanyo 10MV470AX



L1 1 22uH 3.6A Power inductor

Sumida CDRH127-220


Fairchild FDS6930A


R2,R3,R6 2 4.7 Ohm 5% resistor (0603)

R4 1 31.6k Ohm 1% resistor (0603)

R5 1 10.0k Ohm 1% resistor (0603)


VCC VL

BST

DH

LX

DL

GND

FB

10.8V to 13.2V

VIN

COMP

IN

C10

680pF

R4

390k

C1

1uF

10V D1

CMPSH-3

C5

0.1uF

C6

330uF

6V

TPE

N1B

1/2

FDS

6982A

N1A

1/2

FDS

6982A

L1

7.2uH

CEP125

8546_3b3

RWY

8/19/03

1

2

4

7

6

8

9

10

53

U1

MAX85463.3V@4A

VOUT

R1

12.7k

R2

4.02k

C12

1uF

C2,C3

10uF

16V

X5R

R8

3 R9

3

C13

1.5nF

D2

CMPSH-3

SHDN

R5

10k

R6

10k

Q1

MMBT

3904

R3

10C9

0.1uF

C4

1uF

C8

0.1uF


12.00 0.01 3.26 0

10.75 1.29 3.25 4 0.937

12.01 1.16 3.26 4 0.936

13.25 1.06 3.26 4 0.928

20MHz BW 30mVpp

BILL OF MATERIALS


3.3V @ 4A Output

8/19/03

8546_3b3









Sanyo 6TPE330MIL

C5,C8,C9 3 0.1uF 10V ceramic capacitor (0603)





L1 1 7.2uH 7.6A Power inductor

Sumida CEP125-7R2-H


FDS6982A


Fairchild MMBT3904

R1 1 12.7k Ohm 1% resistor (0805)

R2 1 4.02k Ohm 1% resistor (0805)







VCC VL

BST

DH

LX

DL

GND

FB

9V to 20V

VIN

COMP

IN

C1

3.3nF

R1

68k

C3

2.2uF

10V

D2

CMPSH-3

C4

0.1uF

C7

470uF

4V

TPE

N1

FDS

6612A

N2

FDS

6690A

L1

3.9uH

DO5022P

-392

8546_2a5

RWY

5/02/03

1

2

4

7

6

8

9

10

53

U1

MAX85462.5V@6A

VOUT

R4

21.5k

R5

10.0k

C2

0.1uF

C5

10uF

25V

X5R

(2x)

R2

2.2

R3

2.2 R6

2.7

C6

1.2nF

D1

CMPSH-3

#1 - 5/13/03


14.99 0.021 2.502 0

8.96 1.914 2.518 6.01 0.882

15.01 1.160 2.504 6.01 0.864

20.05 0.885 2.500 6.01 0.847

20MHz BW 50mVpp

#2 - 5/13/03


14.99 0.021 2.492 0

8.95 1.867 2.492 6.01 0.896

14.99 1.129 2.481 6.01 0.881

20.05 0.857 2.476 6.01 0.866

20MHz BW 50mVpp

BILL OF MATERIALS

9V to 20V Input

2.5V @ 6A Output

5/02/03

8546_2a5










Sanyo 4TPE470M






Fairchild FDS6612A


Fairchild FDS6690A


R2,R3 2 2.2 Ohm 5% resistor (0603)

R4 1 21.5k Ohm 1% resistor (0805)

R5 1 10.0k Ohm 1% resistor (0805)

R6 1 2.7 Ohm 0.25W 5% resistor (1206)


VCC VL

BST

DH

LX

DL

GND

FB

10.8V to 13.2V

VIN

COMP

IN

C10

6.8nF

R4

43k

C1

1uF

10V D1

CMPSH-3

C5

0.1uF

C7

1000uF

2.5V

TPB

N1B

1/2

FDS

6982

N1A

1/2

FDS

6982

L1

3.2uH

CEP125

8546_1b5

RWY

9/04/03

1

2

4

7

6

8

9

10

53

U1

MAX85461.5V@5A

VOUT

R1

8.87k

R2

10.0k

C12

1uF

C2,C3

10uF

16V

X5R

R8

3 R9

3

C13

1.5nF

D2

CMPSH-3

SHDN

R5

10k

R6

10k

Q1

MMBT

3904

R3

10C9

0.1uF

C4

1uF


12.00 0.013 1.503 0

10.75 0.803 1.501 5.02 0.873

12.01 0.723 1.501 5.02 0.868

13.25 0.660 1.501 5.03 0.863

20MHz BW 60mVpp

BILL OF MATERIALS


1.5V @ 5A Output

9/04/03

8546_1b5










Sanyo 2R5TPB1000M






Sumida CEP125-3R2-U


FDS6982


Fairchild MMBT3904

R1 1 8.87k Ohm 1% resistor (0805)

R2 1 10.0k Ohm 1% resistor (0805)




R8,R9 1 3 Ohm 5% resistor (0603)


VCC VL

BST

DH

LX

DL

GND

FB

3V to 5.5V

VIN

COMP

IN

C10

4.7nF

R4

56k

C1

1uF

10V

D1

CMPSH-3

C5

0.1uF

C6,C7

1500uF

6V

MBZ

N1B

1/2

FDS

6898A

N1A

1/2

FDS

6898A

L1

1.8uH

PA0738

8546_1b2

RWY

8/01/03

1

2

4

7

6

8

9

10

53

U1

MAX85461.2V@6A

VOUT

R1

5.11k

R2

10.0k

C12

1uF

C2,C3

1000uF

10V

MBZ

R8

3 R9

2.7

C13

1.2nF

D2

CMPSH-3

SHDN

R5

10k

R6

10k

Q1

MMBT

3904

R3

10C9

0.1uF

C4

1uF


4.50 0.03 1.207 0

2.97 2.91 1.214 6 0.843

3.60 2.38 1.203 6 0.842

4.50 1.90 1.202 6 0.844

5.52 1.55 1.202 6 0.843

20MHz BW 25mVpp

Current limit is ~11A. For 1.3V output change R1 = 6.34k.

BILL OF MATERIALS

3V to 5.5V Input

1.2V @ 6A Output

8/12/03

8546_1b2


C1,C4,C12 1 1uF 10V X5R ceramic capacitor (0805)


C2,C3 2 1000uF 10V aluminum electrolytic cap

Rubycon MBZ (10x12.5)


Rubycon MBZ (10x12.5)







Pulse Engineering PA0738


FDS6898A


Fairchild MMBT3904

R1 1 5.11k Ohm 1% resistor (0805)

R2 1 10.0k Ohm 1% resistor (0805)





R9 1 2.7 Ohm 5% resistor (0805)


VCC VL

BST

DH

LX

DL

GND

FB

4.5V to 5.5V

VIN

COMP

IN

C1

3.3nF

R1

120k

C3

2.2uF

10V

D2

CMPSH-3

C4

0.1uF

C8

1200uF

10V

MV-AX

(4x)

N1

IRF

7821

N2

IRF

7821

L1

1.2uH

CDEP134H

-1R2

8546_1a8

RWY

7/11/03

1

2

4

7

6

8

9

10

53

U1

MAX85461.8V@10A

VOUT

R3

12.7k

R4

10.0k

C2

0.1uF C6

10uF

6V

X5R

R2

4.7

R5

1.5

C7

2.2nF

D3

EC10

QS03L

C5

1200uF

10V

MV-AX

(3x)

D1

CMPSH-3


5.00 0.04 1.793 0

4.49 4.61 1.785 10.04 0.866

4.99 4.14 1.783 10.04 0.866

5.51 3.74 1.781 10.04 0.868

20MHz BW 50mVpp

Current limit is ~13A.

BILL OF MATERIALS

4.5V to 5.5V Input

1.8V @ 10A Output

7/11/03

8546_1a8







Sanyo 10MV1200AX







Nihon EC10QS03L


Sumida CDEP134H-1R2




R2 1 4.7 Ohm 5% resistor (0603)

R3 1 12.7k Ohm 1% resistor (0805)

R4 1 10.0k Ohm 1% resistor (0805)

R5 1 1.5 Ohm 5% resistor (0805)


VCC VL

BST

DH

LX

DL

GND

FB

12V to 20V

VIN

COMP

IN

C1

4.7nF

R1

47k

C4

1uF

10V D2

CMPSH-3

C5

0.1uF

C8

680uF

2.5V

TPE

N1B

1/2

FDS

6990A

N1A

1/2

FDS

6990A

L1

3.3uH

CEI122

-3R3

8546_1a5

RWY

5/02/03

1

2

4

7

6

8

9

10

53

U1

MAX85461.5V@4A

VOUT

R6

8.87k

R7

10.0k

C2

1uF

35V

X5R

C6

10uF

25V

X5R

R3

2.2

R4

2.2 R5

2.7

C7

1.2nF

C3

0.1uF

R2

10

D1

CMPSH-3


15.00 0.016 1.504 0

11.94 0.610 1.489 4 0.818

15.00 0.495 1.487 4 0.801

20.07 0.382 1.486 4 0.752

20MHz BW 50mVpp

BILL OF MATERIALS

12V to 20V Input

1.5V @ 4A Output

5/02/03

8546_1a5












Sanyo 2R5TPE680MIL




Sumida CEI122-3R3


Fairchild FDS6990A



R3,R4 2 2.2 Ohm 5% resistor (0603)

R5 1 2.7 Ohm 0.25W 5% resistor (1206)

R6 1 8.87k Ohm 1% resistor (0805)

R7 1 10.0k Ohm 1% resistor (0805)


VCC VL

BST

DH

LX

DL

GND

FB

12V to 20V

VIN

COMP

IN

C1

5.6nF

R1

39k

C4

1uF

10V D2

CMPSH-3

C5

0.1uF

C8

680uF

2.5V

TPE

N1B

1/2

FDS

6990A

N1A

1/2

FDS

6990A

L1

3.3uH

CEI122

-3R3

8546_1a2

RWY

5/02/03

1

2

4

7

6

8

9

10

53

U1

MAX85461.2V@4A

VOUT

R6

5.11k

R7

10.0k

C2

1uF

35V

C6

10uF

25V

X5R

R3

2.2

R4

2.2 R5

2.7

C7

1.2nF

C3

0.1uF

R2

10

D1

CMPSH-3


15.00 0.014 1.204 0

11.95 0.507 1.193 4 0.788

15.00 0.413 1.191 4 0.769

20.07 0.320 1.190 4 0.741

20MHz BW 40mVpp

BILL OF MATERIALS

12V to 20V Input

1.2V @ 4A Output

5/02/03

8546_1a2












Sanyo 2R5TPE680MIL




Sumida CEI122-3R3


Fairchild FDS6990A



R3,R4 2 2.2 Ohm 5% resistor (0603)

R5 1 2.7 Ohm 0.25W 5% resistor (1206)

R6 1 5.11k Ohm 1% resistor (0805)

R7 1 10.0k Ohm 1% resistor (0805)


VCC VL

BST

DH

LX

DL

GND

FB

5.5V to 24V

VIN

COMP

IN

C1

39nF

R1

6.8k

C4

2.2uF

10V D1

CMPSH-3

C5

0.1uF

C9

680uF

10V

MV-AX

N1A

1/2

FDS

6912A

N1B

1/2

FDS

6912A

L1

4.7uH

FDV0630

8546_0b9

RWY

1/27/04

1

2

4

7

6

8

9

10

53

U1

MAX85460.9V@3A

VOUT

R5

1.27k

R6

10.0k

C2

1uF

35V

R4

3.3 R7

6.8

C7

680pF

R2

10C3

0.1uFC6

330uF

35V

MV-AX

C8

2.2uF

10V

X5R

R3

3.3


12.02 0.007 0.889 0

5.48 0.65 0.896 3 0.755

12.02 0.30 0.896 3 0.745

18.01 0.20 0.895 3 0.745

20MHz BW 55mVpp

12.03 0.015 2.480 0

5.48 1.52 2.478 3 0.893

12.03 0.69 2.476 3 0.895

18.02 0.46 2.475 3 0.896

24.11 0.35 2.475 3 0.880

20MHz BW 110mVpp

R5 = 21.5k for 2.5V output; circuit is reaching minimum duty cycle above 18V input for 0.9V output.

BILL OF MATERIALS

5.5V to 24V Input

0.9V @ 3A Output

1/27/04

8546_0b9









Sanyo 33MV330AX



Sanyo 10MV680AX




Toko FDV0630-4R7


Fairchild FDS6912A



R3,R4 2 3.3 Ohm 5% resistor (0603)

R5 1 1.27k Ohm 1% resistor (0603)

R6 1 10.0k Ohm 1% resistor (0603)

R7 1 6.8 Ohm 5% resistor (0805)


VCC VL

BST

DH

LX

DL

GND

FB

3.0V to 5.5V

VIN

COMP

IN

C1

15nF

R1

18k

C3

2.2uF

10V D1

CMPSH-3

C4

0.1uF

C9

680uF

10V

MV-AX

N1A

1/2

FDS

8926A

N1B

1/2

FDS

8926A

L1

4.3uH

FDV0630

8546_0a9

RWY

1/19/04

1

2

4

7

6

8

9

10

53

U1

MAX85460.9V@3A

VOUT

R5

1.27k

R6

10.0k

R4

3.3 R7

4.7

C7

1.5nF

R2

10C2

0.1uF

C6

22uF

6V

X5R

C5

680uF

10V

MV-AX

C8

2.2uF

10V

X5R

R3

3.3

Vin In Vout Iout Efficiency

3.60 0.012 0.899 0

2.98 1.20 0.906 3 0.760

3.61 0.98 0.897 3 0.761

4.50 0.79 0.897 3 0.757

5.52 0.65 0.896 3 0.749

20MHz BW 50mVpp

3.60 0.014 2.496 0

2.98 2.59 2.268 3 0.882

3.30 2.54 2.495 3 0.893

3.60 2.33 2.495 3 0.892

4.50 1.87 2.495 3 0.890

5.52 1.53 2.494 3 0.886

20MHz BW 75mVpp

R5 = 21.5k for 2.5V out; circuit is in dropout for 2.98V input and 2.5V output at 3A.

BILL OF MATERIALS

3.0V to 5.5V Input

0.9V @ 3A Output

1/19/04

8546_0a9







Sanyo 10MV680AX







Toko FDV0630-4R3


Fairchild FDS8926A



R3,R4 2 3.3 Ohm 5% resistor (0603)

R5 1 1.27k Ohm 1% resistor (0603)

R6 1 10.0k Ohm 1% resistor (0603)

R7 1 4.7 Ohm 5% resistor (0603)


IN

BST

DH

LX

DL

PGND

FB

4.75V to 5.25V

VIN

COMP

ILIM

C1

390pF

R1

68k

D1

BAT54

C3

0.1uF

C6

22uF

6V

X5R

N1A

1/2

FDS

6930A

N1B

1/2

FDS

6930A

L1

3.3uH

CDRH4D28

-3R3

1953_2j5

RWY

3/2/04

2

3

1

7

6

9

8

10

5

U1

MAX1953

[email protected]

VOUT

C4

22uF

6V

X5R

R3

21.5k

R4

10.0k

GND4

C2

4.7uF

10V

X5R

C5

330pF

R5

4.7

R6

470k

R7

100k

C7

0.01uF

Q1

MMBT

3904

Q2

MMBT

3904

1.8V

R2

4.7


5.01 0.019 2.451 0

4.74 0.86 2.466 1.5 0.907

5.01 0.81 2.457 1.5 0.908

5.26 0.76 2.447 1.5 0.918

20MHz BW <20mVpp

BILL OF MATERIALS


2.5V @ 1.5A Output

3/2/04

1953_2j5











BAT54


Sumida CDRH4D28-3R3


Fairchild FDS6930A

Q1,Q2 2 200mA 40V NPN transistor (SOT-23)

Fairchild MMBT3904


R2,R5 1 4.7 Ohm 5% resistor (0603)

R3 1 21.5k Ohm 1% resistor (0603)

R4 1 10.0k Ohm 1% resistor (0603)




Chien Nguyen

11/2/2004 1 of 3 8/25/2005

MAX8578 5V Input to 1.05V at 3A for Notebook

Figure 1: 5V Input 1.05V/3 A Output, Fs = 300KHz

Vin

4.5V to 5.5V

Vout

1.05V/3A

Figure 1: Asustek/Sony NB 5Vin, 1.05V/3A out (Fs = 300KHz)

10

1

2

9

6

8

7

5EN

BST

DH

DL

GND

LX

OCSET

FB

3 4

MAX8578

SS

VCC

D1

C3

C4

C5 C8C9

R2

R4

L1

Q1/2

Q1/2

R1

C2

R3

C6

C1

C7

U1

R5EN

R1 1 Resistor: 4.53k 1%

R2 1 Resistor: 3.09k, 1%

R3 (optional) 1 Resistor: not used

R4 1 Resistor: 4.99k 1%

R5 1 Resistor: 10, 5%

C1,C4 2 Capacitor 0.01uF/10V, X7R Ceramic, 0603

C2 1 Capacitor 10uF/10V, X7R Ceramic, 1206

C3,C9 1 Capacitor 0.1uF/10V, X7R Ceramic, 0603

C6 (optional) 1 Not used

C5 1 Capacitor 4.7uF/10V, X7R Ceramic, 0603

C7 1 Capacitor 100uF/4V/18mOhm POS

C8 1 Capacitor: 0.027uF/10V X7R, 0603

D1 1 Diode Fast Switching 100V/250mA Philip BAS316

L1 (note 2) 1 Inductor, 2.8uH/10.7mOhms, Toko : 919AS-2R8M

Q1,Q2 1 MOSFET Si4814DY

U1 1 MAX8578EUB

Notes

Chien Nguyen

11/2/2004 2 of 3 8/25/2005

Figure1: CH1 = Vout, CH2 = Vfb, Ch3 = Iout (1A.div)

Figure2: Same as figure 1, but cursor to measure Vfb instead of frequency

Chien Nguyen

11/2/2004 3 of 3 8/25/2005

Figure 3: Same as Figure 2, but now Iout is at~3.4A

Figure 4: same as Figure 3, but cursor now measure frequency

CN

12/17/2004 1 of 9

MAX8578, 9V to 19V Input to 1.0V/1.2V at 4.5A

Typical components for Figure 1:

Component Qty. Description/Vendor Part Number

C1, C3, C6 3 Capacitor, 0.01uF, 10V, X7R Ceramic. Kemet: C0603C103M8RAC

C2 1 Capacitor, 10uF, 25V,X5R Ceramic, TDK: C3225X5R1E106M

C4 1 Capacitor, 4.7uF, 6.3V, X5R Ceramic. Taiyo Yuden: JMK212BJ475MG

C5, C8 2 Capacitor, 0.1uF, 10V, X7R Ceramic. Kemet: C0603C104M8RAC

C7 1 Capacitor, 470uF, 2.5V, 10mΩ, , POS, Sanyo: 4TPD470M

D1 1 Diode, Switching, 100V, 200mA. Central: CMPD914-HUN

Q1,Q2 1 Transistor, Dual SO-8, NMOSFET: 30V Vishay: Si4816DY

Q3 1 Transistor, NMOSFET 2N7002 SOT-23 Central: 2N7002-HUN

L1 1 Inductor, 4.7 uH/40mΩ/5.5A. Vishay: IHLP2525CZRZ-4R7

R1 1 Resistor, 3.92kΩ, 1%

R2 1 Resistor, 4.75 kΩ, 1%

R3 1 Resistor, 1KΩ, 5%

R4 1 Resistor, 20kΩ, 5%


R6 1 Resistor, 10Ω, 5%


R8 1 Resistor, 4.7Ω, 5%


Vin

9V to 19V

Vout

1.0V/4.5A

Figure 1: 9-19Vin, 1.0V-1.2V/4.5A out (Fs ~ 100KHz for 1Vout)

1

2

3

4

10

9

8

7

EN

BST

DH

DL

GND LX

OCSETFB

5 6

MAX8578

SS

VCC

D1

C6

C4

C5

C7

R4

L1

Q1

Q2

R1

C2

C1

ONOFF

R2

R3 Q3

R5

C3

C8

R6

R7

R8

R9

1.2V1.0V

5Vin

CN

12/17/2004 2 of 9

Load Regulation: (8mV from No load to 4.5A)

Vin I out Vout

12V 0A 1.011V

12V 4.5A 1.002V

Line Regulation: (3mV from 9V to 19V)

Vin I out Vout

9V 2.25A 1.004V

19V 2.25A 1.007V

Ripple and Noise:

Figure 1: Ripple and noise at 19Vinput and 0A out. Ch1 = VLX, CH2 = Vout (AC couple, Vout=1.0V), CH3 = Iout (1A/div). Switching Frequency = 88.3kHz.

Figure 2: Ripple and noise at 19Vinput and 4.5A out Ch1 = VLX, CH2=Vout (AC couple, Vout=1.0V), CH3 = Iout (1A/div). Switching Frequency = 113kHz

CN

12/17/2004 3 of 9

Figure 3: Ripple and noise at 9Vinput and 4.5A out. Ch1 = VLX, CH2= Vout (AC couple, Vout=1.2V), CH3 = Iout (1A/div). Switching Frequency = 130kHz.

Step Load Response:

Figure 4: Step Load Response at 12 V input and 1.75A<->4.5A, 5A/uS. CH2 = Vout (AC couple), CH3 = Iout (1A/div)

CN

12/17/2004 4 of 9

Switching Frequency:

Figure 5: Switching Frequency (93.3kHz)at 12V input and 1.0V/0.5A out. Ch1 = VLX, CH2= Vout (AC couple) CH3 = Iout (1A/div)

Figure 6: Switching Frequency (118kHz) at 12V input and 1.0V/4.5A out. Ch1 = VLX, CH2= Vout (AC couple) CH3 = Iout (2A/div)

CN

12/17/2004 5 of 9

Figure 7: Switching Frequency (109kHz)at 12V input and 1.2V/0.5A out. Ch1 = VLX, CH2= Vout (AC couple) CH3 = Iout (1A/div)

Figure 8: Switching Frequency (130kHz)at 12V input and 1.2V/4.5A out. Ch1 = VLX, CH2= Vout (AC couple) CH3 = Iout (1A/div)

Voltage Transition from 1.0V <->1.2V selection:

CN

12/17/2004 6 of 9

Figure 9: 1.0V to 1.2V Transition at 9V input and full load. CH1 = V at R3 input, CH2 = Vout, CH3 = Iout (1A/div)

Figure 10: 1.2V to 1.0V Transition at 9V input and full load. CH1 = V at R3 input, CH2 = Vout, CH3 = Iout (1A/div)

CN

12/17/2004 7 of 9

Figure11: 1.0V to 1.2V Transition at 19V input and 50% load. CH1 = V at R3 input, CH2 = Vout, CH3 = Iout (1A/div)

Figure 12: 1.2V to 1.0V Transition at 19V input and 50% load. CH1 = V at R3 input, CH2 = Vout, CH3 = Iout (1A/div)

CN

12/17/2004 8 of 9

Short Circuit and Recovery:

Figure 13: Short circuit and recovery. Vin = 12V, Iout = 4.5A<->Short. CH1 = Vlx , CH2 = Vout, CH3 = Iin (0.5A/div) The blank spots in Vlx during full load is due to scope aliasing at 4ms/div time base.

Input Current: (Vin = 12V, Vout = 1.2V)

Vin I in Iout

12V 580mA 4.5A

12V 10mA Shorted

Please note that during short circuit input current is only 10mA, which is 0.12W, therefore the circuit can withstand the short circuit indefinitely without any heating issue.

Efficiency Vs. Output Current at 12V input:

Vin Iin Vo Io

Efficiency (Vishay

IHLP2525CZ-4R7)

12.03 0.06 1.209 0.5 0.837489609

12.03 0.12 1.208 1.02 0.853532835

12.02 0.23 1.205 2 0.871735513

12.01 0.36 1.203 3.03 0.843068276

12.01 0.51 1.201 4.04 0.792156863

12.02 0.58 1.200 4.51 0.776292386

CN

12/17/2004 9 of 9

Figure 14: Efficiency Vs. Output Current for two different Inductors.

Efficiency vs. Output Current

0.7

0.75

0.8

0.85

0.9

0.95

0 1 2 3 4 5

Output Current (A)

Effic

iency Sumida CEP125-

8R2

Vishay IHLP2525CZ-4R7

CN 11/24/04 Page 1 MAXIM Integrated Products

MAX8544 12V Input to 1.2V/8.5A Output

MAX8544: 500KHz, 10.8V-13.2V Input, 1.2V/8.5A Output

MA

X8544E

EPGND

FB PGND

SS VL

ILIM1

BST

ILIM2 CS-

EN

CS+

DH

LX

DL

IN

POK

COMP

MODE

FSYNC

Vin (10.8V to 13.2V)

9

19

6

2

3

4

5

10

1

11 20

7

8

12

13

14

16

17

18

15

C14

C15

4X

R21

R22

N6

L2 Vout=1.2V / 8.5A

C13

SYNCO

R19

R23

R14

R13

C28

C13

C18 C19 C20

C21

C22

D3

Sync Out

POK

ON

OFF

N8

R24

D4

R17

R18

C17

R16

R15

VL

VL

VL

C39


Output Ripple and Step Load Response Waveforms:

1.2V Output:

-

EXTERNAL COMPONENT LIST FOR: 12V in, 1.2V/8.5A Output

Component Description Vendor / Part Number QTY

C13 Cap Ceramic X7R: 1uF, 16V TDK: C2012X7R1C105M ( 0805 case size) 1

C14 Cap Ceramic X7R: 0.1uF, 6.3V Kemet/C0603C104M9RAC (0603 case size) 1

C18,19,20 Cap Ceramic X7R 10uF, 16V TDK: C3225X7R 1C106M (1210 case size) 3


C22 Cap Ceramic X7R, 560pF, 25V Kemet/C0402C561M3RAC 1

C28 Cap Ceramic X7R 10uF, 6.3V TDK: C2012X5R0J106M (0805 case size) 1

C17, C39 Cap Ceramic X7R: 0.47uF, 10V TDK; C1608X5R1A474M (0603 case size) 2

C15 (4x) Cap Ceramic X5R: 100uF, 6.3V TDK: C3525X5R0J107M 4


D3 Diode Schottky: 30V, 100mA Central/CMSSH-3 1

D4 (optional for synchronization)

Diode, Switching: 100V, 200mA Central/ CMPD914 1

L2 Inductor: 0.82uH, 6.7 mΩ Vishay: IHLP2525CZ-01 series 0.82uH 1

N6 NMOSFET: 30V, 13.5mΩ Vishay: Si4390DY 1

N8 NMOSFET: 30V, 6mΩ Vishay: Si4842DY 1

R22 Resistor, 200k, 1% 1

R21 Resistor, 100k 1%, 1

R19 Resistor, 53.6k 1% 1

R17, 18 Resistor, 510, 5% 2


R14 Resistor, 8.06k, 1% 1




R24 Resistor, 100K, 5% 1


Figure 1: Output ripple at full load.CH1= VLX, CH2 = Vout AC coupled, CH3= Iout at 5A/div

Figure 2: Output ripple at no load.CH1= VLX, CH2 = Vout ac coupleD, CH3= Iout at 5A/div

Figure 3: Step Load Response 50% <->100% load step at 5A/uS, CH2 = Vout AC coupled, CH3= Iout at 5A/div


MAX8544 12V Input to 1.8V/7.2A Output

MAX8544: 500KHz, 10.8V-13.2V Input, 1.8V/7.2A Output

MAX8544EEPGND

FB PGND

SS VL

ILIM1

BST

ILIM2 CS-

EN

CS+

DH

LX

DL

IN

POK

COMP

MODE

FSYNC

Vin (10.8V to 13.2V)

9

19

6

2

3

4

5

10

1

11 20

7

8

12

13

14

16

17

18

15

C14

C15

4X

R21

R22

N6

L2 Vout=1.8V / 7.2A

C13

SYNCO

R19

R23

R14

R13

C28

C13

C18 C19 C20

C21

C22

D3

Sync In

Sync Out

POK

ON

OFF

N8

R24

D4

R17

R18

C17

R16

R15

VL

VL

VL

C39


1.8V Output:

Figure 1 : Output ripple at full load.CH1= VLX, CH2 = Vout ac couple, CH3= Iout at 5A/div

EXTERNAL COMPONENT LIST FOR: 12V in, 1.8V/7.2A Output

Component Description Vendor / Part Number QTY

C13 Cap Ceramic X7R: 1uF, 16V TDK: C2012X7R1C105M ( 0805 case size) 1


C18,19,20 Cap Ceramic X7R 10uF, 16V TDK: C3225X7R 1C106M (1210 case size) 3



C28 Cap Ceramic X7R 10uF, 6.3V TDK: C2012X5R0J106M (0805 case size) 1

C17, C39 Cap Ceramic X7R: 0.47uF, 10V TDK; C1608X5R1A474M (0603 case size) 2

C15 (4x) Cap Ceramic X5R: 100uF, 6.3V TDK: C4532X5R0J107M 4


D3 Diode Schottky: 30V, 100mA Central/CMSSH-3 1

D4 (optional for synchronization)

Diode, Switching: 100V, 200mA Central/ CMPD914 1

L2 Inductor: 0.82uH, 6.7 mΩ Vishay: IHLP2525CZ-01 series 0.82uH 1

N6 NMOSFET: 30V, 13.5mΩ Vishay: Si4390DY 1

N8 NMOSFET: 30V, 6mΩ Vishay: Si4842DY 1


R21 Resistor, 100k 1%, 1

R19 Resistor, 53.6k 1% 1

R17, 18 Resistor, 510, 5% 2






R24 Resistor, 100K, 5% 1


Figure 2: Output ripple at no load.CH1= VLX, CH2 = Vout ac couple, CH3= Iout at 5A/div

Figure 3 Step Load Response 50% <->100% load step at 5A/uS, CH2 = Vout ac couple, CH3= Iout at 2A/div

MAX8576 10-20V Input to 1.05V at 4.5A

Chien Nguyen 1 of 3 10/22/04

Typical components for Figure 1:

Component Qty. Description/Vendor Part Number


C2, C3 (not used) 1 Capacitor, 10uF, 25V,X5R Ceramic, TDK: C3225X5R1E106M

C5 1 Capacitor, 1uF, 35V, X7R Ceramic. Taiyo Yuden: GMK316BJ105ML

C6 1 Capacitor, 4.7uF, 6.3V, X5R Ceramic. Taiyo Yuden: JMK212BJ475MG


C8 1 Capacitor, 0.1uF, 25V, X7R. Kemet: C0603C104M3RAC

C9 1 Capacitor, 470uF, 2.5V, 15mΩ, , POS, Sanyo: 2R5TPE470MF

D1 1 Diode, Switching, 100V, 200mA. Central: CMPD914

Q1,Q2 1 Transistor, Dual SO-8, NMOSFET: 30V Fairchild: FDS6892:Q1 for HSFET, Q2for LSFET

Q3 1 Transistor, NMOSFET 2N7002 SOT-23

L1 1 Inductor, 8.2uH/9.5mΩ/5.8A. Sumida: CEP125-8R2


R2 1 Resistor, 4.32 kΩ, 1%

R3 1 Resistor, 1KΩ, 5%

R4 1 Resistor, 20kΩ, 5%

R5, R7 2 Resistor, 6.98kΩ, 1%

R6 1 Resistor, 30Ω, 5%

R8 1 Resistor, 4.7Ω, 5%

Note: C9 is actually 470uF/4V/ 10 mΩ. I do not have the 470uF/2.5V/15mΩ on hand to use.

Vin 10V to 20V

Vout 1.05V/4.5A

Figure 1: 10-20Vin, 1.05V/4.5A out (100KHz)

1

2

3

4

10

9

8

7

IN

BST

DH

DL

GND LX

OCSET FB

5 6

MAX857

6

SS

VL

D1

C3

C8

C6

C5

C7

C9

R4

L1

Q1

Q2

R1

C2

C1

ON OFF

R2

R3 Q3

R5

C4

C10

R6

R7

R8



Regulation:

Vin I out Vout

10V 2.5A 1.040V

20V 2.5A 1.042V

15V 0A 1.056V

15V 4.5A 1.032V

Ripple and Noise:

Figure 1: Ripple and noise at 20Vinput and 0A out. Ch2 = VLX, CH3 3= Vout (AC couple), CH1 = Iout

Figure 2: Ripple and noise at 20Vinput and 4.5A out Ch2 = VLX, CH3 3= Vout (AC couple), CH1 = Iout



Figure 3: Ripple and noise at 10Vinput and 4.5A out. Ch2 = VLX, CH3 3= Vout (AC couple), CH1 = Iout

Step Load Response:

Figure 4: Step Load Response at15Vinput and 0.5A<->4.5A, 5A/uS. Ch2 = VLX, CH3 3= Vout (AC couple), CH1 = Iout (2A/div)

Network Modem

VP VLBST

DH

LX

DL

GND

OUT

FBPOK

3.3V@7A

24V INPUT

7,8

FB2

FB3

B2

B3

COMP

5V@1A

ILIM

C122nF

R115k

C41uF10V

D1CMPSH-3

C50.1uF

C6330uF35V

MV-AX

C151200uF

10VMV-AX

C12220uF10VHC

C8680uF

6VOS-CON

R5220

R630.9k

R710.0k

N1FDS6690A

N2FDS6690A

T11:1

Lpri = 3.8uHVP4-0047

Q3FZT789A

1864_3f3RWY

8/21/01

1

2

3

4

5

6

7

8

9

10

11

12

13

14

1516

U1MAX1864T

D3EC31QS04

R31.5

R41.5

C1310nF

C11330uF10V

TANT

C710uF35V(3x)

C2560pF

R2100k

VL

POK

C34.7uF35V

C922uF10V

C161uF10V

C146.8nF

R8100

0.25W

C10220pF50V

1,2,3,4 9,10,11,12

5,6

VL

D2EC31QS04

Vin Iin Vout Iout V3 I3 Eff.25.208 1.362 3.3107 7.010 5.0737 1.003 0.82424.001 1.429 3.3109 7.010 5.0735 1.003 0.82522.791 1.502 3.3108 7.009 5.0731 1.003 0.826

100mVpp 200mVpp

BILL OF MATERIALS23V to 25V Input

3.3V @ 7A, 5V @ 1A Output08/21/01

1864_3f3DESIGNATION QTY DESCRIPTIONC1 1 22nF ceramic capacitor (0805)C2 1 560pF ceramic capacitor (0805)C3 1 4.7uF 35V Y5V ceramic capacitor (1206)

Taiyo Yuden GMK316F475MGC4,C16 2 1uF 10V ceramic capacitor (0805)


Sanyo 35MV330AXC7 3 10uF 35V Y5V ceramic capacitor (1210)

Taiyo Yuden GMK325F106MHC8 1 680uF 6V organic semiconductor capacitor

Sanyo OS-CON 6SP680MC9 1 22uF 10V ceramic capacitor (1812)

Taiyo Yuden LMK432BJ226MMC10 1 220pF 50V ceramic capacitor (0805)C11 3 330uF 10V tantalum capacitor

Kemet T510X337M010ASC12 1 220uF 10V aluminum electrolytic capacitor

Sanyo 10MV220HCC13 1 10nF ceramic capacitor (0805)C14 1 6.8nF ceramic capacitor (0805)C15 1 1200uF 10Valuminum electrolytic capacitor

Sanyo 10MV1200AXD1 1 100mA 30V Schottky diode

Central Semi CMPSH-3D2,D3 2 3.1A 40V Schottky diode

Nihon EC31QS04N1,N2 2 17m Ohm 30V MOSFET (8-SO)

Fairchild FDS6690AQ3 1 2A, -25V PNP transistor (SOT-223)

Zetex FZT789AR1 1 15k Ohm 5% resistor (0805)R2 1 100k Ohm 5% resistor (0805)R3,R4 2 1.5 Ohm 5% resistor (0805)R5 1 220 Ohm 5% resistor (0805)R6 1 30.9k Ohm 1% resistor (0805)R7 1 10.0k Ohm 1% resistor (0805)R8 1 100 Ohm 5% 0.25W resistor (1210)

T1 1 1:1 Transformer Lpri=3.8uHCoiltronics VP4-0047


DSL Modem

VP VLBST

DH

LX

DL

GND

OUT

FBPOK

[email protected]

9V to 16VINPUT

FB2

FB3

B2

B3

COMP

5V@300mA

12V@50mA

ILIM

C18.2nF

R168k

C21uF10V

D1CMPSH-3

C30.1uF

C41000uF

25VMV-AX

C82x 10uF

6V

C104.7uF16V

C124.7uF16V

C18330uF10V

MV-AX

D2EC10QS03L

C132x 680uF

10VMV-AX

R21k

R410.0k

R510.0k

R6220

R73k

R81k

N1A1/2

FDS6912A

N1B

T11:1:2


Q3TIP32A

Q42N

4402

VL

RWY5/11/01

R9220

R108.66k

R111.0k

Q52N

3905

[email protected]

B4

FB4

FB5

B5

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

1920

U1MAX1865TR13

100k

1,2,3 10,11,12

4

9

7

5

6,8

C174.7uF16V

C194.7uF16V

C2047uF25V

C142x 10uF

6V

C60.01uF

C94700pF

C114700pF

D3EC10QS06

Q22N3905

C15 330uF

10V

C162x 3300uF

10V

R3100

R12390

0.5W

C21100pF50V

C54.7uF25V

C73300pF


3.3V @ 1.8A, 2.5V @ 1.4A, 5V @ 300mA, 12V @ 50mA Output5/11/01

1865T_3fDESIGNATION QTY DESCRIPTIONC1 1 8.2nF ceramic capacitor (0805)C2 1 1uF 10V X7R ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MGC3 1 0.1uF ceramic capacitor (0805)C4 1 1000uF 25V aluminum electrolytic cap

Sanyo 25MV1000AXC5 1 4.7uF 25V ceramic capacitor (1210)

Taiyo Yuden TMK325BJ475MNC6 1 0.01uF ceramic capacitor (0805)C7 1 3300pF ceramic capacitor (0805)C8,C14 4 10uF 6V ceramic capacitor (1206)

Taiyo Yuden JMK316BJ106MLC9,C11 2 4700pF ceramic capacitor (0805)C10,C12,C17,C19 4 4.7uF 16V ceramic capacitor (1206)

Taiyo Yuden EMK316BJ475MLC13 2 680uF 10V aluminum electrolytic cap

Sanyo 10MV680AXC15,C18 2 330uF 10V aluminum electrolytic cap

Sanyo 10MV330AXC16 2 3300uF 10V aluminum electrolytic capC20 1 47uF 25V aluminum electrolytic cap

Sanyo 25MV47AXC21 1 100pF 50V ceramic capacitor (radial)D1 1 100mA Schottky diode (SOT-23)

Central Semi CMPSH-3D2 1 1A 30V Schottky diode

Nihon EC10QS03LD3 1 1A 60V Schottky diode

Nihon EC10QS06N1 1 Dual N-channel MOSFET (SO-8)

Fairchild FDS6912AQ2,Q5 2 200mA 40V PNP Transistor (TO-92)

2N3905Q3 1 3A 60V PNP Transistor (TO-220)

TIP32AQ4 1 600mA 40V PNP Transistor (TO-92)

2N4402R1 1 68k Ohm 5% resistor (0805)R2 1 1k Ohm 5% resistor (0805)

R3 1 100 Ohm 5% resistor (0805)R4,R5 2 10.0k Ohm 1% resistor (0805)R6,R9 2 220 Ohm 5% resistor (0805)R7 1 3.01k Ohm 1% resistor (0805)R8 1 1.00k Ohm 1% resistor (0805)R10 1 8.66k Ohm 1% resistor (0805)R11 1 1.00k Ohm 1% resistor (0805)R12 1 390 Ohm 5% 0.5W resistor (axial)R13 1 100k Ohm 5% resistor (0805)T1 1 1:1:2 transformer Lpri = 3.8uH

Coiltronics VP4-0047U1 1 MAX1865TEEP (20-QSOP)

DSL Modem

VP VLBST

DH

LX

DL

GND

OUT

FBPOK

[email protected]

9V to 16VINPUT

FB2

FB3

B2

B3

COMP

5V@300mA

12V@50mA

ILIM

C18.2nF

R168k

C21uF10V

D1CMPSH-3

C30.1uF

C41000uF

25VMV-AX

C82x 10uF

6V

C104.7uF16V

C124.7uF16V

C18330uF10V

MV-AX

D2EC10QS03L

C132x 680uF

10VMV-AX

R21k

R410.0k

R510.0k

R6220

R73k

R81k

N1A1/2

FDS6912A

N1B

T11:1:2


Q3TIP32A

Q42N

4402

VL

RWY5/11/01

R9220

R108.66k

R111.0k

Q52N

3905

[email protected]

B4

FB4

FB5

B5

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

1920

U1MAX1865TR13

100k

1,2,3 10,11,12

4

9

7

5

6,8

C174.7uF16V

C194.7uF16V

C2047uF25V

C142x 10uF

6V

C60.01uF

C94700pF

C114700pF

D3EC10QS06

Q22N3905

C15 330uF

10V

C162x 3300uF

10V

R3100

R12390

0.5W

C21100pF50V

C54.7uF25V

C73300pF


3.3V @ 1.8A, 2.5V @ 1.4A, 5V @ 300mA, 12V @ 50mA Output5/11/01

1865T_3fDESIGNATION QTY DESCRIPTIONC1 1 8.2nF ceramic capacitor (0805)C2 1 1uF 10V X7R ceramic capacitor (0805)


Sanyo 25MV1000AXC5 1 4.7uF 25V ceramic capacitor (1210)

Taiyo Yuden TMK325BJ475MNC6 1 0.01uF ceramic capacitor (0805)C7 1 3300pF ceramic capacitor (0805)C8,C14 4 10uF 6V ceramic capacitor (1206)

Taiyo Yuden JMK316BJ106MLC9,C11 2 4700pF ceramic capacitor (0805)C10,C12,C17,C19 4 4.7uF 16V ceramic capacitor (1206)


Sanyo 10MV680AXC15,C18 2 330uF 10V aluminum electrolytic cap

Sanyo 10MV330AXC16 2 3300uF 10V aluminum electrolytic capC20 1 47uF 25V aluminum electrolytic cap

Sanyo 25MV47AXC21 1 100pF 50V ceramic capacitor (radial)D1 1 100mA Schottky diode (SOT-23)


Nihon EC10QS03LD3 1 1A 60V Schottky diode


Fairchild FDS6912AQ2,Q5 2 200mA 40V PNP Transistor (TO-92)

2N3905Q3 1 3A 60V PNP Transistor (TO-220)

TIP32AQ4 1 600mA 40V PNP Transistor (TO-92)

2N4402R1 1 68k Ohm 5% resistor (0805)R2 1 1k Ohm 5% resistor (0805)

R3 1 100 Ohm 5% resistor (0805)R4,R5 2 10.0k Ohm 1% resistor (0805)R6,R9 2 220 Ohm 5% resistor (0805)R7 1 3.01k Ohm 1% resistor (0805)R8 1 1.00k Ohm 1% resistor (0805)R10 1 8.66k Ohm 1% resistor (0805)R11 1 1.00k Ohm 1% resistor (0805)R12 1 390 Ohm 5% 0.5W resistor (axial)R13 1 100k Ohm 5% resistor (0805)T1 1 1:1:2 transformer Lpri = 3.8uH


CPE modem

VP VLBST

DH

LX

DL

GND

OUT

FBPOK

7V@500mA

24VINPUT

FB2

FB3

B2

B3

COMP

5V@1A

-5V@100mA

ILIM

C18.2nF

R1200k

C21uF10V

D1CMPSH-3

C30.1uF

C4220uF35VCA

C7220uF10VCA

C102.2uF10V

C8220uF10VCA

C5220uF

10VCA

R4220

R530.1k

R610.0k

N1A1/2

NDS9956A

N1B

T11:1

Lpri = 27.2uHVP3-0084

Q2TIP30B

VL

RWY3/2/01

R9220

R746.4k

R846.4k Q4

2N3904

B4

FB4

FB5

B5

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

1920

U1MAX1865TR10

100k

1,2 3,4,11,12

D2EP05Q03L

C12220uF10VCA

R222

R322

VL

6 7,58

VL

C64700pF

C94700pFC11

2.2uF10V

9,10


7V @ 500mA, 5V @ 1A, -5V @ 100mA Output03/15/01

1865t_7bDESIGNATION QTY DESCRIPTIONC1 1 8.2nF ceramic capacitor (0805)C2 1 1uF 10V ceramic capacitor (0805)


Sanyo 35MV220CAC5,C7,C8,C12 4 220uF 10V aluminum electrolytic capacitor

Sanyo 10MV220CAC6,C9 2 4700pF ceramic capacitor (0805)C10,C11 2 2.2uF 10V ceramic capacitor (0805)

Taiyo Yuden LMK212BJ225MGD2 1 2.1A 60V Schottky diode

Nihon EC21QS06D2 1 1A 100V Schottky diode

On Semiconductor MBRS1100N1 1 55m Ohm 30V Dual MOSFET (8-SO)

Fairchild Semi NDS6930AQ2 1 1A, -80V PNP transistor (TO-220)

TIP30BQ3 1 200mA, 40V NPN transistor (TO-92)

2N3904R1 1 200k Ohm 5% resistor (0805)R2,R3 2 22 Ohm 5% resistor (0805)R4,R9,R10 3 46.4k Ohm 1% resistor (0805)R5,R8 2 10.0k Ohm 1% resistor (0805)R6,R11 3 220 Ohm 5% resistor (0805)R7 1 30.1k Ohm 1% resistor (0805)R12 1 100k Ohm 5% resistor (0805)T1 1 1:1Transformer Lpri=15.2uH


CPE Modem

VP VLBST

DH

LX

DL

GND

OUT

FBPOK

[email protected]

9V to 16VINPUT

FB2

FB3

B2

B3

COMP

5V@500mA

12V@400mA

ILIM

C18.2nF

R168k

C21uF10V

D1CMPSH-3

C30.1uF

C41000uF

25VMV-AX

C82x 10uF

6V

C11330uF10V

C154.7uF25V

C21330uF10V

MV-AX

D2EC10QS06

C162x 680uF

10VMV-AX

R4220

R546.4k

R610.0k

R7220

R830.9k

R910.0k

N1A1/2

FDS6912A

N1B

T11:1:2


Q3FZT749

VL

1865t_3jRWY

6/28/01

R10220

R1188.7k

R1210.0k

Q4FZT749

1.8V@1A

B4

FB4

FB5

B5

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

1920

U1MAX1865TR17

100k

1,2,3 10,11,12

4

9

7

5

6,8C20150uF10V

C2247uF25V

C23150uF25V

MV-AX

C172x 10uF

6V

C615nF

C910nF

C1312nF

D3MBRS1100

Q2FZT749

C18 330uF

10V

C19330uF10V

R13390

0.5WC24

200pF50V

C54.7uF25V

C710nF

-12V@100mA

R1410.0k

R1510.0k

R16220

C251uF50V

C264.7uF25VC27

3.3nF

Q6KSH29C

D4EC10QS06

Q5MPSA56

C104.7nF C12

10uF10V

R210

R310

C14150uF25V

MV-AX

C281.8nF


12V @ 150mA, 5V @ 500mA, 3.3V @ 1.5A, 1.8V @ 1A, -12V @ 20mA Output6/22/01

1865t_3hBOM REV: PRELIM (P1) BOARD REV: P1DESIGNATION QTY DESCRIPTIONC1 1 8.2nF ceramic capacitor (0805)C2 1 1uF 10V X7R ceramic capacitor (0805)


Sanyo 35MV1000AXC5 1 4.7uF 25V X5R ceramic capacitor (1210)

Taiyo Yuden TMK325BJ475MNC6 1 15nF ceramic capacitor (0805)C7,C9 2 10nF ceramic capacitor (0805)C8,C16 4 10uF 6V X5R ceramic capacitor (1206)

Taiyo Yuden JMK316BJ106MLC10 1 4.7nF ceramic capacitor (0805)C11,C17,C18,C20 4 330uF 10V aluminum electrolytic cap

Sanyo 10MV330AXC12 1 10uF 10V X7R ceramic capacitor (1210)

Taiyo Yuden LMK325BJ106MNC13,C26 2 3300pF ceramic capacitor (0805)C14,C21,C25 3 4.7uF 16V X5R ceramic capacitor (1206)



Sanyo 10MV150SAXC22 1 47uF 25V aluminum electrolytic cap

Sanyo 25MV47AXC23 1 200pF 50V ceramic capacitor (radial)C24 1 1uF 50Vceramic capacitor (radial)D1 1 100mA Schottky diode (SOT-23)


Nihon EC10QS06D3 1 1A 100V Schottky diode

On Semiconductor MURS1100N1 1 Dual N-channel MOSFET (SO-8)

Fairchild FDS6912AQ2,Q3 2 1A 40V PNP Transistor (SOT-223)

Zetex FZT749

Q4 1 600mA 40V PNP Transistor (TO-92)2N4401

Q5 1 500mA 80V PNP Transistor (TO-92)MPSA56

Q6 1 500mA 80V NPN Transistor (TO-92)MPSA06

R1 1 68k Ohm 5% resistor (0805)R2,R3 1 10 Ohm 5% resistor (0805)R4,R7,R10,R16 4 220 Ohm 5% resistor (0805)R5 1 46.4k Ohm 1% resistor (0805)R6,R9,R14,R15 4 10k Ohm 1% resistor (0805)R8 1 30.9k Ohm 1% resistor (0805)R11 1 8.66k Ohm 1% resistor (0805)R12 1 1.00k Ohm 1% resistor (0805)R13 1 390 Ohm 0.5W 5% resistor (axial)T1 1 1:1:2 transformer Lpri = 3.8uH


WLL Terminal

VP VLBST

DH

LX

DL

GND

OUT

FB

POK

5.15V@800mA

24VINPUT

FB2

FB3

B2

B3

COMP

7V@400mA

-5V@80mA

ILIM

C122nF

R1130k

C41uF10V

D1CMPSH-3

C50.1uF

C6220uF35VCA

C15220uF16VHC

C174.7uF10V

C12220uF16VHC

C81000uF

16VMV-AX

(2x)

R8220

R946.4k

R1010.0k

N1A1/2

NDS6930A

N1B

T11:1:2

Lpri = 22.8uHVP2-0116

Q2KSH30

VL

1865t_7dRWY

8/20/01

R15220

R134.75k

R144.64k Q4

2N3904

B4

FB4

FB5

B5

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

1920

U1MAX1865TR2

100k

11,12 8,9

D4MBRS1100

C20220uF16VHC

R34.7

R44.7

6 3,107

VL

C130.1uF

C18150pF C19

4.7uF10V

1,2

C11470uF16VCA

D2EC21QS06

4,5

R53.16k

R61.00k

C143.3nF

C2220pF

C34.7uF35V

C74.7uF35V

C922uF10V

C10100pF100V

VL

7VOFF

R12100kP3

IRLML5103

D3CMPD

914

R16100

0.25W

C21440pF100V

R1118k

R7330

0.25W

C161uF10V

Vin Iin Vout Iout V4 I4 V5 I5 Eff.25.208 0.403 5.1268 0.8009 6.883 0.401 -5.0021 0.0802 0.71524.003 0.422 5.1266 0.8009 6.882 0.401 -5.0020 0.0800 0.71722.796 0.442 5.1265 0.8009 6.882 0.401 -5.0024 0.0801 0.721

50mVpp 10mVpp 50mVpp


7V @ 400mA, 5.15V @ 800mA, -5V @ 80mA Output08/21/01

1865t_7dDESIGNATION QTY DESCRIPTIONC1 1 22nF ceramic capacitor (0805)C2 1 220pF ceramic capacitor (0805)C3,C7 2 4.7uF 35V Y5V ceramic capacitor (1206)

Taiyo Yuden GMK316F475MGC4,C16 2 1uF 10V ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MGC5,C13 1 0.1uF ceramic capacitor (0805)C6 1 220uF 35V aluminum electrolytic capacitor

Sanyo 35MV220CAC8,C11 3 470uF 16V aluminum electrolytic capacitor

Sanyo 16MV470CAC9 1 22uF 10V ceramic capacitor (1812)

Taiyo Yuden LMK432BJ226MMC10 1 100pF 50V ceramic capacitor (0805)C12,C15,C20 3 220uF 16V aluminum electrolytic capacitor

Sanyo 16MV220HCC14 1 3.3nF ceramic capacitor (0805)C17,C19 2 4.7uF 10V ceramic capacitor (1206)

Taiyo Yuden LMK316BJ475MLC18 1 150pF ceramic capacitor (0805)C21 2 220pF 50V ceramic capacitor (0805)D1 1 100mA 30V Schottky diode

Central Semi CMPSH-3D2 1 2.1A 40V Schottky diode

Nihon EC21QS04D3 1 10mA 100V signal diode (SOT-23)

Central Semi CMPD914D4 1 1A 60V Schottky diode

Central Semi EC10QS06N1 1 55m Ohm 30V Dual MOSFET (8-SO)

Fairchild Semi FDS6930AP3 1 1 Ohm –30V PFET (SOT-23)

IRLML5103Q2 1 1A, -40V PNP transistor (D-PAK)

Fairchild KSH30Q4 1 200mA, 40V PNP transistor (TO-92)

2N3906R1 1 130k Ohm 5% resistor (0805)R2,R12 2 100k Ohm 5% resistor (0805)

R3,R4 2 4.7 Ohm 5% resistor (0805)R5 1 3.16k Ohm 1% resistor (0805)R6 1 1.00k Ohm 1% resistor (0805)R7 1 330 Ohm 5% 0.25W resistor (1210)R8,R15 2 220 Ohm 5% resistor (0805)R9 1 46.4k Ohm 1% resistor (0805)R10 1 10.0k Ohm 1% resistor (0805)R11 1 18k Ohm 5% resistor (0805)R13 1 4.75k Ohm 1% resistor (0805)R14 1 4.64k Ohm 1% resistor (0805)R16 1 100 Ohm 5% 0.25W resistor (1210)T1 1 1:1:2 Transformer Lpri=22.8uH


ADSL Modem

V+ VLBST

DH

LX

DL

GND

OUT1

FB1POK

3.3V@1A

8V to 18VINPUT

1

1

4

FB2

FB3

B2

B3

COMP

5V@100mA

12V@100mA

ILIM

C115nF

R168k

C31uF

D1CMPSH-3

C40.1uF

C5330uF35V

MV-AX(3x)

C10330uF10V

C133.3uF10V

C164.7uF25V

C113.3uF10V

D2EP05Q04

D3MBRS1100

C20680uF

6VOS-CON

R5220

R610.5k

R710.0k

R8220

R93.09k

R101.00k

N1A1/2

FDS6930A

N1B1/2

FDS6930A

L110uH

1:1:4:4

Q2FZT789A

Q32N3905

VL

1865t_3lRWY9/6/01

R11220

R128.87k

R131.00k

Q42N3905

C144.7uF25V

R145.11k

R155.11k

R16220

C174.7uF25V

D4MBRS1100

C194.7uF25V

4

-12V@100mA

2.5V@1A

B4

FB4

FB5

B5 Q52N3903

C7330uF10VHC

C81.2nF

C121nF

C152.2nF

C182.2nF

C22390uF10V

MV-AX

C23100uF25V

MV-AX

C25100uF25V

MV-AX

R34.7

R44.7

MAX1865TR2

100k

1,2 12,11

310

58

6 7

R17330

0.25W

R18330

0.25W

C24100pF50V

C26100pF50V

C915nF

C2100pF

C64.7uF35V

C2122uF10V

1

2

13

20 19

18

17

16

15

14

3

4

5

6

7

8

9

10

11

12

Vin Iin Vout Iout V2 I2 V3 I3 V4 I4 V5 I5 Eff.8.036 1.462 3.322 1.005 2.530 1.002 5.053 0.100 12.17 0.101 -12.07 -0.102 0.75212.00 1.011 3.321 1.005 2.530 1.002 5.052 0.100 12.17 0.101 -12.17 -0.102 0.72915.00 0.845 3.321 1.005 2.530 1.002 5.052 0.100 12.18 0.101 -12.17 -0.102 0.69818.00 0.739 3.320 1.005 2.530 1.002 5.053 0.100 12.18 0.101 -12.18 -0.102 0.66521.00 0.667 3.320 1.005 2.530 1.002 5.055 0.100 12.18 0.101 -12.18 -0.102 0.632

Transformer Design

EFD15 core AL=84nH/T2 (Coiltronics SG3-0084)

Layer 1: (Pin 3-10) 11 turns bifilar #28AWGLayer 2: (Pin 5-8) 44 turns #34AWGLayer 3: (Pin 1-12) 11 turns bifilar #28AWGLayer 4: (Pin 6-7) 44 turns #34AWGLayer 5: (Pin 2-11) 11 turns bifilar #28AWG


3.3V @ 1A, 2.5V @ 1A, 5V @ 100mA, 12V @ 100mA, -12V@ 100mA Output1865t_3l 9/6/01 RWYDESIGNATION QTY DESCRIPTIONC1,C9 2 15nF ceramic capacitor (0805)C2 1 100pF ceramic capacitor (0805)C3 1 1uF 10V ceramic capacitor (0805)


Sanyo 35MV330AXC6 1 4.7uF 35V Y5V ceramic capacitor (1206)

Taiyo Yuden GMK316F475MGC7,C10 2 330uF 10V aluminum electrolytic capacitor

Sanyo 10MV330HCC8 1 1.2nF ceramic capacitor (0805)C11,C13 2 3.3uF 10V ceramic capacitor (1206)

Taiyo Yuden LMK316BJ335MLC12 1 1nF ceramic capacitor (0805)C14,C16,C17,C19 4 4.7uF 25V ceramic capacitor (1210)

Taiyo Yuden TMK325BJ475MNC15,C18 2 2.2nF ceramic capacitor (0805)C20 1 680uF 6V organic semiconductor capacitor

Sanyo OS-CON 6SP680MC21 1 22uF 10V ceramic capacitor (1812)

Taiyo Yuden LMK432BJ226MMC22 1 390uF 10V aluminum electrolytic capacitor

Sanyo 10MV390AXC23,C25 2 100uF 25Valuminum electrolytic capacitor

Sanyo 25MV100AXC24,C26 2 100pF 50V ceramic capacitor (0805)D1 1 100mA Schottky diode

Central Semi CMPSH-3D2 1 0.5A 40V Schottky diode

Nihon EC05Q04D3,D4 2 1A 100V Schottky diode

On Semiconductor MBRS1100N1 1 55m Ohm 30V Dual MOSFET (8-SO)

Fairchild Semi FDS6930AQ2 1 2A, -25V PNP transistor (SOT-223)

Zetex FZT789AQ3,Q4 2 200mA, -40V PNP transistor (TO-92)

2N3905Q5 1 200mA 40V NPN transistor (TO-92)

2N3903R1 1 100k Ohm 5% resistor (0805)R2 1 68k Ohm 5% resistor (0805)R3,R4 2 4.7 Ohm 5% resistor (0805)R5,R8,R11,R16 4 220 Ohm 5% resistor (0805)R6 1 10.5k Ohm 1% resistor (0805)R7,R14,R15 3 10.0k Ohm 1% resistor (0805)R9 1 3.09k Ohm 1% resistor (0805)R10,R13 2 1.00k Ohm 1% resistor (0805)R12 1 8.87k Ohm 1% resistor (0805)R17,R18 2 330 Ohm 5% 0.25W resistor (1210)T1 1 1:1:4:4 Transformer Lpri=10uH (SG3)

ICE Components ICA-????U1 1 MAX1865TEEP (20-QSOP)

DSL Modem

VP VLBST

DH

LX

DL

GND

OUT

FBPOK

[email protected]

12V INPUT

3,4,11,12

6,8

FB2

FB3

B2

B3

COMP

5V@350mA

ILIM

C18.2nF

R168k

C21uF10V

D1CMPSH-3

C30.1uF

C4390uF25V

MV-AX

C810uF10V

C1110uF10V

C1010uF10V

C13820uF

10VMV-AX

R5220

R61.05k

R71.00k

R8220

R93.09k

R101.00k

N11/2

FDS6930A

N11/2

FDS6930A

T1Lpri =

15.2uHVP3-0047

Q2TIP30B

Q3TIP30B

1864_3d3RWY9/3/01

2.5V@130mA

1

2

3

4

5

6

7

8

9

10

11

12

13

14

1516

U1MAX1864T

C710uF10V

D2EC10QS04

R310

R410

C51500pF

C63300pF

C12470uF

10VMV-AX

C4b4.7uF25V

R2100k

VL

POK

R1136

0.5W

C151000pF

50V

C91uF10V

C121uF10V

C141uF10V

1,2 9,10

5

7

Vin Iin Vout Iout Vout2 Iout2 Vout3 Iout3 Eff.8.908 0.955 3.321 1.502 2.521 0.130 5.015 0.350 0.83111.93 0.719 3.320 1.502 2.521 0.130 5.013 0.350 0.82414.94 0.578 3.321 1.502 2.521 0.130 5.015 0.350 0.819

BILL OF MATERIALS12V Input

3.3V @ 1.5A, 2.5V @ 130mA, 5V @ 350mA Output1864_3d3 6/26/01DESIGNATION QTY DESCRIPTIONC1 1 8.2nF ceramic capacitor (0805)C2,C9,C12,C14 4 1uF 10V X7R ceramic capacitor (0805)


Sanyo 25MV390AXC4b 1 4.7uF 25V ceramic capacitor (1210)

Taiyo Yuden TMK325BJ475MNC5 1 1.5nF ceramic capacitor (0805)C6 1 3.3nF ceramic capacitor (0805)C7,C8,C10,C11 4 10uF 10V ceramic capacitor (1210)

Taiyo Yuden LMK325BJ106MNC13 1 820uF 10V aluminum electrolytic cap

Sanyo 10MV820AXC15 1 1nF 50V ceramic capacitor (radial)D1 1 100mA Schottky diode (SOT-23)



Fairchild FDS6930AQ2,Q3 2 1A 80V PNP Transistor (TO-220)

TIP30BR1 1 68k Ohm 5% resistor (0805)R2 1 100k Ohm 5% resistor (0805)R3,R4 2 10 Ohm 5% resistor (0603)R5,R8 2 220 Ohm 5% resistor (0805)R6 1 1.05k Ohm 1% resistor (0805)R7,R10 2 1.00k Ohm 1% resistor (0805)R9 1 3.09k Ohm 1% resistor (0805)R11 1 36 Ohm 0.5W 5% resistor (axial)T1 1 1:1 Transformer Lpri = 15.2uH

Coiltronics VP3-0047U1 1 MAX1864TEEE (16-QSOP)

Telematics in car

VP VLBST

DH

LX

DL

GND

OUT

FBPOK

5V to 28VINPUT

FB2

FB3

B2

B3

COMP

8V@50mA

ILIM

C122nF

R1150k

C41uF10V

D1CMPSH-3

C50.1uF

C6470uF50VHC(2x)

C1347uF10VHC

C1547uF10VHC

C1410uF50VHC

C161000uF

6VHC

R5220

R654.9k

R710.0k

R8220

R930.9k

R1010.0k

N11/2

NDS9956A

N11/2

NDS9956A

L1DO3316P-223

Q2TIP30B

Q3TIP30B

1864_3c3RWY

7/23/01

5V@50mA

1

2

3

4

5

6

7

8

9

10

11

12

13

14

1516

U1MAX1864T

C1210uF50VHC

R310

R410

C1022nF

C1115nF

3.3V@1A

C84.7nF

C94.7nF

R2100k

VL

IN

SHDNGND

FB

OUTU2MAX1616

1

5

2

4

32.5V@10mA

R11100k

R12100k

C1847uF10VHC

C170.1uF

VL

SHDN

P4NDS0605R13

100k

R1418k

R1515k

VL

1

2

3

4

5 6

7

8

10OUTA

REF

INA-

INA+

VEE INB+

INB-

OUTB

VCC

U3MAX9053

R16200k

R17100k

R1882k

R19100k

C190.1uF

N.C.

8VFAULT

5VFAULT

D21N4148

D31N4148

D41N4148

C21.5nF

C34.7uF35V

C74.7uF35V


3.3V @ 1A, 8V @ 50mA, 5V @ 50mA, 2.5V @ 10mA Output1864_3c3 7/23/01DESIGNATION QTY DESCRIPTIONC1,C10 2 22nF ceramic capacitor (0805)C2 1 1.5nF ceramic capacitor (0805)C3,C7 2 4.7uF 35V Y5V ceramic capacitor (1206)

Taiyo Yuden GMK316F475MGC4 1 1uF 10V X7R ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MGC5,C17,C19 3 0.1uF 50Vceramic capacitor (0805)C6 2 470uF 50V aluminum electrolytic cap

Sanyo 50MV470HCC8,C9 2 4.7nF ceramic capacitor (0805)C11 1 15nF ceramic capacitor (0805)C2, C14 2 10uF 50V aluminum electrolytic cap

Sanyo 50MV10HCC13, C15,C18 3 47uF 10V aluminum electrolytic cap

Sanyo 10MV47HCC16 1 1000uF 6V aluminum electrolytic cap

Sanyo 6MV1000HCD1 1 100mA 30V Schottky diode (SOT-23)D2,D3,D4 3 10mA 100V silicon diode (DO41)

1N4148L1 1 22uH 1.5A Power Inductor

Coilcraft DO3316P-223N1 1 Dual N-channel MOSFET (SO-8)

Fairchild FDS9956AP4 1 P-channel MOSFET (SOT-23)

Fairchild NDS0605Q2,Q3 2 1A 80V PNP Transistor (TO-220)

TIP30BR1 1 150k Ohm 5% resistor (0805)R2,R13,R17,R19 4 100k Ohm 5% resistor (0805)R3,R4 2 10 Ohm 5% resistor (0603)R5,R8 2 220 Ohm 5% resistor (0805)R6 1 54.9k Ohm 1% resistor (0805)R7,R10 2 10.0k Ohm 1% resistor (0805)R9 1 30.9k Ohm 1% resistor (0805)R7,R10 2 220 Ohm 5% resistor (0805)R11,R12 2 100k Ohm 1% resistor (0805)R14 1 18k Ohm 5% resistor (0805)R15 1 15k Ohm 5% resistor (0805)R16 1 200k Ohm 5% resistor (0805)

R18 1 82k Ohm 5% resistor (0805)U1 1 MAX1865TEEP (20-QSOP)U2 1 MAX1616EUK (5-SOT23)U3 1 MAX9053BEUB (10-uMAX)

USB Modem

IN VLBST

DH

LX

DL

GND

OUT

FBPOK

3.1V@400mA

4.5V to 5.5VINPUT

FB2

FB3

B2

B3

COMP

12V@30mA

ILIM

C15.6nF

R1680k

C21uF10V

D1CMPSH-3

C30.1uF

C747uF10V

C947uF25VHC

C10470uF

6VMV-AX

R8220

R930.1k

R1010.0k

R12220

R1386.6k

R1410.0k

N1A1/2IRF

7301

N1B

T11:1:3

Lpri=22.8uH

Q32N

3905

VL

1864_3v1RWY

11/14/01

5.0V@100mA

1

2

3

4

5

6

7

8

9

10

11

12

13

14

1516

U1MAX1864TR2

100k

C1647uF25VHC

C1347uF10VHC

Q22N

3905

C410uF10V

R34.7

R44.7

R515.0k

R610.0k

C55.6nF

C60.22uF

C80.22uF

C12220uF10V

MV-AX

C15100uF25V

MV-AX

D2EP05Q04

D3EP05Q04

C1447pF

R151k

0.25W

R7100

R11100

C11470uF

6VMV-AX

Notes:1. T1 wound on EF12.6 core with AL=57nH/T*T, 10-pin surface-mount bobbin.Layer 1: (Pin 5-6) 30 turns #32AWGLayer 2: (Pin 4-7) 30 turns #32AWGLayer 3: (Pin 3-8) 20 turns #30AWGLayer 4: (Pin 2-9) 20 turns #30AWGLayer 5: (Pin 1-10) 20 turns #30AWG

1,2

9,10

3

8

45,76

5V

12

VL

R16100k

R17100k

R1810k

R1910k

Q4CMPT3904

Q5CMPT3904


12V @ 30mA, 5.0V @ 0.1A, 3.1V @ 0.4A Output11/08/01

1864_3v1DESIGNATION QTY DESCRIPTIONC1,C5 2 5.6nF ceramic capacitor (0805) C2 1 1uF 10V X7R ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MGC3 1 0.1uF ceramic capacitor (0805)C4 1 10uF 10V ceramic capacitor (1210)

Taiyo Yuden LMK325BJ106MNC6,C8 2 0.22uF ceramic capacitor (0805) C7,C13 2 47uF 10V aluminum electrolytic cap

Sanyo 10MV47HCC9,C16 2 47uF 25V aluminum electrolytic cap

Sanyo 25MV47HCC10,C11 2 470uF 6V aluminum electrolytic cap


Sanyo 10MV220AXC14 1 47pF 50V ceramic capacitor (0805)C15 1 100uF 25V aluminum electrolytic cap

Sanyo 25MV100AXD1 1 100mA Schottky diode (SOT-23)

Central Semi CMPSH-3 D2,D3 2 0.5A 40V Schottky diode

Nihon EP05Q04N1 1 Dual N-channel MOSFET (SO-8)

International Rectifier IRF7301Q2,Q3 2 200mA -40V PNP Transistor (TO-92)

2N3905Q4,Q5 2 200mA 40V NPN Transistor (SOT-23)

Central Semi CMPT3904R1 1 680k Ohm 5% resistor (0805)R2,R16,R17 3 100k Ohm 5% resistor (0805)R3,R4 2 10 Ohm 5% resistor (0603)R5 1 15.0k Ohm 1% resistor (0805)R6,R10,R14 3 10.0k Ohm 1% resistor (0805)R7,R11 2 100 Ohm 5% resistor (0805)R8,R12 2 220 Ohm 5% resistor (0805)R9 1 30.1k Ohm 1% resistor (0805)R13 1 86.6k Ohm 1% resistor (0805)R15 1 1k Ohm 0.25W 5% resistor (1210)R18,R19 2 10k Ohm 5% resistor (0805)

T1 1 1:1:3 transformer Lpri = 22.8uHCoiltronics SG7-0057 core (EF12.6)


Vin Iin Vout Iout V2 I2 V3 I3 Eff.5.500 0.456 3.0802 0.400 4.9233 0.10005 11.940 0.03025 0.8324.999 0.498 3.0786 0.400 4.9187 0.10005 11.932 0.03025 0.8374.4974 0.552 3.0776 0.400 4.9038 0.10004 11.922 0.03025 0.839

100mVpp 25mVpp 25mVpp

7/12/2004 CN 1 of 4

Cable/DSL Modem Power Supply: 5.85V to 7.15V Input DC-DC Step-Down to 1.24V at 3A

3.3V Input Linearly Regulated to 2.5Vat 1.4A, 1.8V at 0.17A and 1.5V at 0.14A

R5

620ΩΩΩΩ

GND

OUT

C8

1µµµµF

R6

1.15kΩΩΩΩ

R7

2.49kΩΩΩΩ

R8

620ΩΩΩΩ

R9

523ΩΩΩΩ

R10

2.49kΩΩΩΩ

B2

FB2

B3

FB3

R11

220ΩΩΩΩ

R12

2.55kΩΩΩΩ

R13

2.49kΩΩΩΩ

B4

FB4

R2

4.7ΩΩΩΩ

R1

4.7ΩΩΩΩ

DL

LX

DH

BST

R4

180kΩΩΩΩ

R3

100kΩΩΩΩ

C5

1µµµµF

C9

1500pF

C3

2.2µµµµF

IN

VL

ILIM

POK

FB

COMP

C4

0.1µµµµF

D1

CMPSH-3

L1

5.6uH

VOUT1

1.236V @

3AC6

680µµµµF

VOUT2

1.8V @ 170mA

VOUT3

1.5V @ 140mA

C13

1µµµµF

C11

10µµµµF

C14

10µµµµF

C16

10µµµµF

C17

10µµµµF

VOUT4

2.5V @ 1.1A

Q4

FTZ749

Q3

PZT4403

Q2

PZT4403

C1

470µµµµF

B5

FB5

MAX1965

TO LOGIC

5.85V to 7.15V

INPUT

POWER GROUND

ANALOG GROUND

Q1

FDS6930A

C10

100pF

C2

10µµµµF

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Rs

3ΩΩΩΩ

Cs

4700pF

3V to 3.6V

INPUT

R14

2kΩΩΩΩ

C7

0.01µµµµF

C12

0.01µµµµF

C15

0.01µµµµF

C18

10µµµµF

7/12/2004 CN 2 of 4

Test results:

Output At No Load At Full Load

Vout1 1.240V 1.239V

Vout2 1.831V 1.816V

Vout3 1.515V 1.507V

Vout4 2.519V 2.490V

Line regulation is negligible.

BOM with Estimated Cost based on 500K+ quantity

Component QTY. Description Cost Ext. Cost

R1,R2 2 Resistor 4.7Ω, 5% 0603 0.001 0.002

R3 1 Resistor 100kΩ, 5% 0603 0.001 0.001

R4 1 Resistor 180kΩ, 5% 0603 0.001 0.001

R5,R8 2 Resistor 620Ω, 5% 0603 0.001 0.002

R6 1 Resistor 1.15kΩ, 1% 0603 0.0025 0.0025

R7,R10,R13 3 Resistor 2.49kΩ, 1% 0603 0.0025 0.0075

R9 1 Resistor 523Ω, 1% 0603 0.0025 0.0025

R12 1 Resistor 2.55kΩ, 1% 0603 0.0025 0.0025

R13 1 Resistor 220Ω, 5% 0603 0.001 0.001

R14 1 Resistor 2kΩ, 5% 0603 0.001 0.001

Rs (optional) 1 Resistor 3Ω, 5% 0805 0.002 0.002

C1 1 Capacitor 470uF/10V Sanyo: 10MV470AX (8x11.5) 0.05 0.05

C2,C11, C14,C16,

C17,C18 6 Capacitor 10uF/10V, X7R Ceramic, 1206 0.05 0.3

C3 1 Capacitor 2.2uF/10V, X5R Ceramic, 0603 0.025 0.025

C4 1 Capacitor 0.1uF/10V, X7R Ceramic, 0603 0.02 0.02

C5,C8,C13 3 Capacitor 1uF/10V, X5r Ceramic 0603 0.025 0.075

C6 1 Capacitor 680uF/16V Rubycon: 16MBZ680M 8x 16 0.09 0.09

C7, C12,C15 3 Capacitor 0.01uF/10V, X7R Ceramic, 0603 0.015 0.045

C9 1 Capacitor 1500pF/25V, X7R Ceramic, 0603 0.015 0.015

C10 1 Capacitor 100pF/25V, COG Ceramic, 0603 0.03 0.03

0

Cs (optional) 1 Capacitor 1000pF/25V, X7R Ceramic, 0603 0.015 0.015

D1 1 Diode Schottky 100mA/30V Central CMPSH-3 0.035 0.035

Q1 1 MOSFET 30V/ 0.044Ω Dual SO-8 Fairchild FSD6930A 0.25 0.25

Q2,Q3 2 Transistor PNP SOT223 Philip PZT4403 0.07 0.14

Q4 1 Transistor PNP SOT223 Zetex or Fairchild FTZ749 0.15 0.15

0

L1 1 Inductor 15uH, 3.1A Sumida CDRH104R-150 0.1 0.1

MAX1965 1 IC, PWM + LDO Controllers 0.95 0.95

Total 2.315

7/12/2004 CN 3 of 4

Output Ripple and Noise (measured with all outputs at full load):

1.24V Buck Output Ripple

1.8V Output Ripple

7/12/2004 CN 4 of 4

1.5V LDO Output Ripple

2.5V LDO Output Ripple

BST2

DH2

LX2

ILIM2

DL2

POK1

POK2

EN2

EN1

FREQ

COMP2

FB2

SS2

N.C.

BST1

DH1

LX1

ILIM1

DL1

VL

V+

AVL

GND

COMP1

FB1

SS1

GND

1

2

3

4

5

6

7

8

9

10

11

12

13

14 15

16

17

18

19

20

21

22

23

24

25

PGND

26

27

28

C11

100uF

6V

X5R

(6x)

R2

1.21k

C5

0.1uF

D1 D2

C6

0.1uF R3

1.21k

C9

10pF

N2

IRF7821

N4

IRF7832

L2

0.6uH

R9

28.7k

(700kHz)

C19

220pF

R12

3.9k

R11

43k

C17

2.2nF

R10

5.76k

C23

33nF

C21

2.2nF

R14

43k

R13

3.9k

C22

220pF

R15

5.76k

R16

10.0kC24

33nF

C15

1uF

R8

4.7

C14

1uF

C13

4.7uF

L1

0.6uH

N1

IRF7821

N3

IRF7832

C12

100uF

6V

X5R

(6x)

U1

MAX8538

10.8V to 13.2V

VIN

1.25V

@8A

VOUT1

8538_1e2

RWY

12/15/04

VL

R7

2.2

R32

10

C2

10uF

25V

X5R

(2x)

C4

10uF

25V

X5R

(2x)

EN2

1.25V

@8A

VOUT2

R23

10.0k

EN1

POK1

C20

10pF

C18

10pF

VL

R1

0.02

0.5WC8

10pF

R4

0.02

0.5W

POK2

R22

1.5

0.5W

C40

2.2nF

R21

1.5

0.5W

C39

2.2nF

VLR6

100k

R5

100k

R19

100k

R20

100k

Vin Iin Vout1 Iout1 Vout2 Iout2 Efficiency

12.01 0.0973 1.259 0 1.262 0

10.78 2.30 1.256 8 1.259 8 0.811

12.01 2.09 1.257 8 1.260 8 0.8032

13.22 1.93 1.257 8 1.260 8 0.789

20MHz BW <10mVpp <10mVpp

Current limit ~9.3A ~9.1A

BILL OF MATERIALS


1.8V @ 8A, 1.8V @ 8A Output

12/17/04

8538_1e2





C8,C9,C18,C20 4 10pF ceramic capacitor (0603)


Taiyo Yuden JMK432BJ107MU







C17,C21 2 2.2nF ceramic capacitor (0603)



C39,C40 2 2.2nF ceramic capacitor (0805)

D1,D2 2 100mA 30V Schottky diode (SOD-323)

Central Semi CMDSH-3

L1,L2 2 0.6uH 10A Inductor

Toko FDV0630-0R6




International Rectifier IRD7832

R2,R3 2 1.21k Ohm 1% resistor (0603)


R7 1 2.2 Ohm 5% resistor (0603)

R8 1 4.7 Ohm 5% resistor (0603)

R9 1 28.7k Ohm 1% resistor (0603)

R10,R15 2 5.76k Ohm 1% resistor (0603)

R11,R14 2 43k Ohm 5% resistor (0603)

R12,R13 2 3.9k Ohm 5% resistor (0603)

R13 1 1.5k Ohm 5% resistor (0603)

R16,R23 2 10.0k Ohm 1% resistor (0603)

R21,R22 2 1.5 Ohm 0.5W 5% resistor (2012)

R22 1 2.2 Ohm 1W 5% resistor (2512)

R27,R280,R31, R32 4 Short

U1 1 MAX8538EEI (28-QSOP)

7V to 20V Input

1.8V @ 3A, 3.3V @ 2A Output

9/23/04

BST2

DH2

LX2

ILIM2

DL2

POK1

POK2

EN2

EN1

FREQ

COMP2

FB2

SS2

N.C.

BST1

DH1

LX1

ILIM1

DL1

VL

V+

AVL

GND

COMP1

FB1

SS1

GND

1

2

3

4

5

6

7

8

9

10

11

12

13

14 15

16

17

18

19

20

21

22

23

24

25

PGND

26

27

28

C11

22uF

6V

X5R

(2x)

C7

0.1uF

R2

1kC5

0.1uF

D1 D2

C6

0.1uF

R3

2k

C10

0.1uF

N1A

FDS6912A

N1B

FDS6912A

L2

1.5uH

R9

16.5k

(1.2MHz)

C19

100pF

R12

1.8k

R11

33k

C17

1nF

C18

5pFR10

12.7k

C23

33nF

C21

1.5nF

R14

33k

R13

1.5k

C22

100pF

C20

5pF R15

31.6k

R16

10.0kC24

33nF

C15

1uF

R8

4.7

C14

1uF

C13

4.7uF

L1

1.5uHN2A

FDS6984S

N2B

FDS6984S

U1

MAX8538

7V to 20V

VIN

VOUT1

3.3V

@2A

8538_1d8

RWY

9/23/04

R21

3.3

C39

680pF

R22

2.2

1W

C40

1nF

R29

10

R30

10

VL

R7

2.2

R31

10

R32

10

C2

22uF

6V

X5R

(2x)

C4

10uF

25V

X5R

(2x)

EN

VOUT2

1.8V

@3A

R23

10.0k

VL

POK2

POK1

R5

100k

R6

100k

R19

100k

C12

22uF

6V

X5R

(2x)


12.01 0.060 3.318 0 1.814 0

6.97 2.03 3.319 2.00 1.810 3 0.853

12.00 1.21 3.321 2.00 1.811 3 0.832

20.15 0.78 3.324 2.00 1.813 3 0.769

20MHz BW <80mVpp 20mVpp

Current limit ~5A ~4A

BILL OF MATERIALS

7V to 20V Input

1.8V @ 3A, 3.3V @ 2A Output

8538_1d8


C2,C11,C12 6 22uF 6V X5R ceramic capacitor (1206)




C5,C6,C7,C10 4 0.1uF ceramic capacitor (0603)




Taiyo Yuden TMK107C105MA








Central Semi CMDSH-3

L1,L2 2 1.5uH 5.8A Inductor

Sumida CDRH103R-1R5


Fairchild FDS6912A


Fairchild FDS6984S



R5,R6,R19 3 100k Ohm 5% resistor (0603)

R7 1 2.2 Ohm 5% resistor (0603)

R8 1 4.7 Ohm 5% resistor (0603)

R9 1 16.5k Ohm 1% resistor (0603)

R10 1 12.7k Ohm 1% resistor (0603)

R11,R14 2 33k Ohm 5% resistor (0603)

R12 1 1.8k Ohm 5% resistor (0603)

R13 1 1.5k Ohm 5% resistor (0603)

R15 1 31.6k Ohm 1% resistor (0603)

R16,R23 2 10.0k Ohm 1% resistor (0603)

R21 1 3.3 Ohm 5% resistor (0603)

R22 1 2.2 Ohm 1W 5% resistor (2512)

R29,R30,R31,R32 4 10 Ohm 5% resistor (0603)


1.2MHz, Dual Output, All Ceramic Step-Down Converter for xDSL Modems

1.8V @0.8A

VOUT1

3.3V @1.1A

VOUT2

IN VL

RST CKO

EN

COMP1 COMP2

LX1

FB1

LX2

FB2

PGND

GNDREF

ILIM2ILIM1

4

7

6

24

10

8

9

1

20

2

12

17

14

15

5 19

U1MAX8529

C80.22uF

25V

C54.7nF

C1100uF

6VX5R

C70.1uF

C100.1uF

C1427pF

C154.7nF

R430.1k

R610k

R324.3k

R1124.3k

R1210.5k

R1410k

L16.2uHCDRH5D28

L26.2uHCDRH5D28

RESET

8529_1c8RWY

4/11/03

C24.7uF25VX5R

C94.7uF10VX5R

C30.1uF

C114.7uF25VX5R

C12100uF

6VX5R

N2A,BNDS

9956A

D1A,BCMPSH-3A

R833k

R1633k

R174.99k

BST1 BST2

DH1

DL1

DH2

N1A,BNDS

9956A

16

18

11

13

OSC

SYNC

3

DL2

22

23

21

VL

10.8V to 13.2VVIN

C627pF

R51k

C41nF

R733k

R1568k

R131k

C131nF

R13.3R23.3

R93.3

R103.3

Efficiency, Ripple and Current Limit Measurements Vin Iin V1 I1 V2 I2 Efficiency 11.96 0.0501 1.7972 0 3.3008 0 10.80 0.5882 1.7952 0.8006 3.2986 1.102 0.799 11.95 0.5432 1.7954 0.8006 3.2992 1.102 0.782 13.27 0.5024 1.7956 0.8006 3.2997 1.102 0.761 20MHz BW 12mVpp 16mVpp Ilim 1.4A 1.7A

1.2MHz, Dual Output, All Ceramic Step-Down Converter for xDSL Modems


3.3V @ 1.1A, 1.8V @ 0.8A Output 4/11/03

8529_1c8 DESIGNATION QTY DESCRIPTION C1,C12 2 100uF 6V X5R ceramic capacitor (1812)

Taiyo Yuden JMK432BJ107MUL C2,C11 2 4.7uF 25V X5R ceramic capacitor (1210)

Taiyo Yuden TMK325BJ475MN C3,C7,C10 3 0.1uF ceramic capacitor (0603) C4,C13 2 1nF ceramic capacitor (0603) C5,C15 2 4.7nF ceramic capacitor (0603) C6,C14 2 27pF ceramic capacitor (0603) C8 1 0.22uF 25V X5R ceramic capacitor (1206)

Taiyo Yuden TMK316BJ224MF C9 1 4.7uF 10V ceramic capacitor (1206)

Taiyo Yuden LMK316BJ475ML D1 1 100mA 30V Dual Schottky diode (SOT-23)

Central Semi CMPSH-3A L1,L2 2 6.2uH 1.8A Inductor

Sumida CDRH5D28-6R2 N1,N2 2 110m Ohm 30V N-ch MOSFET (SO-8)

Fairchild NDS9956A R1,R2,R9,R10 4 3.3 Ohm 5% resistor (0603) R3,R11 2 24.3k Ohm 1% resistor (0603) R4 1 30.1k Ohm 1% resistor (0603) R5,R13 2 1k Ohm 5% resistor (0603) R6,R14 2 10k Ohm 5% resistor (0603) R7,R8,R16 3 33k Ohm 5% resistor (0603) R12 1 10.5k Ohm 1% resistor (0603) R15 1 68k Ohm 5% resistor (0603) R17 1 4.99k Ohm 1% resistor (0603) U1 1 MAX8529EEG (24-QSOP)

C110uF10V

C30.1uF

C40.22uF

L110uH2.3A

C210uF10V

1

8

6

2

4

GND3

10

7

5

9

REF

BP

LIM

SHDN

IN LX

FB

SYNC/PWM

PGND

R14.64k1%

R210.0k1%

U6MAX1692

+1.8V @ 400mAPOWER

RWY12/19/00 Li+ to +1.8V@400mA, +2.5V@100mA

C547pF

ON 1.8

GND

INSHDN1 SHDN2

OUT1

SET1

OUT2

SET2

R116k

C1uF

C1uF

R100k

R100k

R100k

U7MAX8865

C2uF

1

2

3

4

5

67

8

POWER

ON 2.5

+2.5V @ 100mA

RST 2.5

VCC

GND

RESET

3

1

2U8

MAX809

+2.7V

1.2MHz, All Ceramic Dual Step-Down Converter with Power-On Reset 6V Input, 1.8V/3A and 2.5V/3A outputs Full Load Efficiency = 86% at 6V Input

1.8V @3A

VOUT1

2.5V @3A

VOUT2

IN VL

RST CKO

EN

COMP1 COMP2

LX1

FB1

LX2

FB2

PGND

GNDREF

ILIM2ILIM1

4

7

6

24

10

8

9

1

20

2

12

17

14

15

5 19

U1MAX8529

C80.22uF

10V

C51nF

C122uF6V

X5R(2x)

C70.22uF

C100.1uF

C1410pF

C151nF

R420.5k

R610k

R316.5k

R1216.5k

R1311.0k

R1510k

L11.0uH

DO3316P-102HC

L21.5uH

DO3316P-152HC

RESET

8529_1v8RWY

1/06/03

C210uF10VX5R(2x)

C94.7uF10VX5R

C30.1uF

C1110uF10VX5R(2x)

C1222uF6V

X5R(2x)

N2A,BFDS

6912A

D1A,BCMPSH-3A

R868k

R1768k

R184.99k

BST1 BST2

DH1

DL1

DH2

N1A,BFDS

6912A

16

18

11

13

OSC

SYNC

3

DL2

22

23

21

VL

5.4V to 6.6VVIN

C627pF

R5560

C4390pF

R722k

R1668k

R14560

C13390pF

R13.3R23.3

R103.3R113.3

VL

R9100k

.

1.2MHz, All Ceramic Dual Step-Down Converter with Power-On Reset 6V Input, 1.8V/3A and 2.5V/3A outputs Full Load Efficiency = 86% at 6V Input


1.8V @ 3A, 2.5V @ 3A Output 1/06/03

8529_1v8 DESIGNATION QTY DESCRIPTION C1,C12 4 22uF 6V X5R ceramic capacitor (1210)

Taiyo Yuden JMK325BJ226MM C2,C11 4 10uF 10V X5R ceramic capacitor (1210)

Taiyo Yuden LMK325BJ106MN C3,C10 2 0.1uF ceramic capacitor (0603) C4,C13 2 390pF ceramic capacitor (0603) C5,C15 2 1nF ceramic capacitor (0603) C6,C14 2 27pF ceramic capacitor (0603) C7,C8 2 0.22uF 10V X5R ceramic capacitor (0603)

Taiyo Yuden LMK107BJ224MA C9 1 4.7uF 10V ceramic capacitor (1206)

Taiyo Yuden LMK316BJ475ML D1 1 100mA 30V Dual Schottky diode (SOT-23)

Central Semi CMPSH-3A L1 1 1.0uH 11A Inductor

Coilcraft DO3316P-102HC L2 1 1.5uH 9A Inductor

Coilcraft DO3316P-152HC N1,N2 2 35m Ohm 30V N-ch MOSFET (SO-8)

Fairchild FDS6912A R1,R2,R10,R11 4 3.3 Ohm 5% resistor (0603) R3 1 16.5k Ohm 1% resistor (0603) R4 1 20.5k Ohm 1% resistor (0603) R5,R14 2 560 Ohm 5% resistor (0603) R6,R15 2 10k Ohm 5% resistor (0603) R7 1 22k Ohm 5% resistor (0603) R8,R16,R17 3 68k Ohm 5% resistor (0603) R18 1 4.99k Ohm 1% resistor (0603) U1 1 MAX8529EEG (24-QSOP)

VP VLBST

DH

LX

DL

GND

OUT

FBPOK

3.3V@7AVOUT

10V to 14VVIN

FB2

FB3

B2

B3

COMP

ILIM

C13.3nF

R1120k

C41uF10V

D1CMPSH-3

C50.1uF

C8820uF6V

MV-EXR(2x)

N1IRF7811

N2IRF7811

L13.3uH

DO5022P-332HC

1864_3aRWY3/27/02

1

2

3

4

5

6

7

8

9

10

11

12

13

14

1516

U1MAX1864T

R33.3R43.3

C74.7uF25VX5R

R2100k

VL

POK

C910uF10VX5R

VL

D2EC31QS03L

C233pF

C32.2nF

C647uF25V

OS-CON(2x)

R52200.25W

R6220

R730.9k

R810.0k

C1047nF

Q2KSH30

C1147uF10VHC

VIN

5V @ 150mAV2

Vin Iin Vout Iout V2 I2 Efficiency12.012 0.047 3.3220 0 5.0846 09.989 2.670 3.3262 7.007 5.0722 0.1505 0.90212.008 2.259 3.3272 7.007 5.0743 0.1505 0.88714.004 1.969 3.3276 7.007 5.0777 0.1505 0.873

45mVpp 30mVpp

10V to 14V Input3.3V @ 7A, 5V @ 0.15A Output

3/27/021864_3aDESIGNATION QTY DESCRIPTIONC1 1 3.3nF ceramic capacitor (0805) C2 1 33pF ceramic capacitor (0805) C3 1 2.2nF ceramic capacitor (0805) C4 1 1uF 10V X7R ceramic capacitor (0805)

Taiyo Yuden LMK212BJ105MGC5 1 0.1uF ceramic capacitor (0805)C6 2 47uF 25V organic semiconductor cap

Sanyo 25SC47MC7 1 4.7uF 25V X5R ceramic capacitor (1210)

Taiyo Yuden TMK325BJ475MNC8 2 820uF 6V aluminum electrolytic cap

Sanyo 6MV820EXRC9 1 10uF 10V X5R ceramic capacitor (1210)

Taiyo Yuden LMK325BJ106MNC10 1 47nF ceramic capacitor (0805) C11 1 47uF 10V aluminum electrolytic cap

Sanyo 10MV47HCD1 1 100mA 30V Schottky diode (SOT-23)



Coilcraft DO5022P-332HCN1,N2 1 12m Ohm N-channel MOSFET (SO-8)

International Rectifier IRF7811 Q2 1 1A 40V PNP transistor (D-PAK)

Fairchild KSH30R1 1 150k Ohm 5% resistor (0805)R2 1 100k Ohm 5% resistor (0805)R3,R4 2 3.3 Ohm 5% resistor (0805)R5 1 220 Ohm 0.25W 5% resistor (1210)R6 1 220 Ohm 5% resistor (0805)R7 1 30.9k Ohm 1% resistor (0805)R8 1 10.0k Ohm 1% resistor (0805)U1 1 MAX1864TEEE (16-QSOP)

BILL OF MATERIALS

9V to 12V Input

6V @ 1.5A, 1.5V @ 3A Output

9/27/04

BST2

DH2

LX2

ILIM2

DL2

POK1

POK2

EN2

EN1

FREQ

COMP2

FB2

SS2

N.C.

BST1

DH1

LX1

ILIM1

DL1

VL

V+

AVL

GND

COMP1

FB1

SS1

GND

1

2

3

4

5

6

7

8

9

10

11

12

13

14 15

16

17

18

19

20

21

22

23

24

25

PGND

26

27

28

C11

4.7uF

10V

X5R

C7

0.1uF

R2

680C5

0.1uF

D1 D2

C6

0.1uF

R3

1.2k

C10

0.1uF

N1A

FDS6930A

N1B

FDS6930A

L2

10uH

R9

33k

(600kHz)

C19

39pF

R12

1k

R11

33k

C17

1nF

R10

66.5k

C23

33nF

C21

4.7nF

R14

9.1k

R13

1k

C22

220pF

C20

22pF R15

8.87k

R16

10.0kC24

33nF

C15

1uF

R8

4.7

C14

1uF

C13

4.7uF

L1

2.2uHN2A

FDS6984S

N2B

FDS6984S

C12

22uF

6V

X5R

(2x)

U1

MAX8538

9V to 12V

VIN

VOUT1

1.5V

@3A

8538_1b5

RWY

9/27/04

R21

3.9

C39

330pF

R22

2.2

C40

1nF

R29

10

R30

10

VL

R7

2.2

R31

10

R32

10

C2

10uF

16V

X5R

(2x)

C4

10uF

16V

X5R

EN

VOUT2

6V

@1.5A

R23

10.0k

VL

POK2

POK1

R5

100k

R6

100k

R19

100k

C18

10pF

C41

22uF

6V

X5R

VL


10.51 0.038 1.504 0 6.12 0

8.80 1.68 1.505 3 6.12 1.50 0.926

10.51 1.42 1.505 3 6.12 1.50 0.918

12.20 1.23 1.505 3 6.12 1.50 0.913

20MHz BW 20mVpp 40mVpp

Current limit ~3.9 ~2.1

BILL OF MATERIALS

9V to 12V Input

6V @ 1.5A, 1.5V @ 3A Output

8538_1b5























Central Semi CMOSH-3


Toko FDV0630-2R2


Sumida CDRH6D38-100


FDS6930A


FDS6984S

R2 1 680 Ohm 5% resistor (0603)



R7 1 2.2 Ohm 5% resistor (0603)

R8 1 4.7 Ohm 5% resistor (0603)


R10 1 66.5k Ohm 1% resistor (0603)


R14 1 9.1k Ohm 5% resistor (0603)

R15 1 8.87k Ohm 1% resistor (0603)

R16,R23 2 10.0k Ohm 1% resistor (0603)

R21 1 3.9 Ohm 5% resistor (0603)

R22 1 2.2 Ohm 0.25W 5% resistor (1210)



9V to 12V Input

3.4V @ 1.75A, 2.6V @ 3A Output

9/23/04

BST2

DH2

LX2

ILIM2

DL2

POK1

POK2

EN2

EN1

FREQ

COMP2

FB2

SS2

N.C.

BST1

DH1

LX1

ILIM1

DL1

VL

V+

AVL

GND

COMP1

FB1

SS1

GND

1

2

3

4

5

6

7

8

9

10

11

12

13

14 15

16

17

18

19

20

21

22

23

24

25

PGND

26

27

28

C11

22uF

6V

X5R

C7

0.1uF

R2

680C5

0.1uF

D1 D2

C6

0.1uF

R3

1.1k

C10

0.1uF

N1A

FDS6930A

N1B

FDS6930A

L2

4.7uH

R9

20.0k

(1MHz)

C19

100pF

R12

1.8k

R11

68k

C17

680pF

R10

33.2k

C23

33nF

C21

470pF

R14

68k

R13

3.3k

C22

68pF

R15

22.6k

R16

10.0kC24

33nF

C15

1uF

R8

4.7

C14

1uF

C13

4.7uF

L1

2.7uHN2A

FDS6984S

N2B

FDS6984S

C12

22uF

6V

X5R

U1

MAX8538

9V to 12V

VIN

VOUT1

2.6V

@3A

8538_2a6

RWY

9/23/04

R21

3.9

C39

330pF

R22

2.2

C40

1nF

R29

10

R30

10

VL

R7

2.2

R31

10

R32

10

C2

10uF

16V

X5R

C4

10uF

16V

X5R

EN

VOUT2

3.4V

@1.75A

R23

10.0k

VL

POK2

POK1

R5

100k

R6

100k

R19

100k


10.51 0.045 2.603 0 3.45 0

8.95 1.71 2.603 3.00 3.45 1.75 0.905

10.50 1.47 2.603 3.00 3.46 1.75 0.898

12.06 1.29 2.603 3.00 3.46 1.75 0.891

20MHz BW <40mVpp <40mVpp

Current limit ~3.6A ~2.1A

BILL OF MATERIALS

9V to 12V Input

3.4V @ 1.75A, 2.6V @ 3A Output

8538_2a6



















Central Semi CMOSH-3


Toko FDV0630-2R7


Toko FDV0630-4R7


FDS6930A


FDS6984S

R2 1 680 Ohm 5% resistor (0603)



R7 1 2.2 Ohm 5% resistor (0603)

R8 1 4.7 Ohm 5% resistor (0603)

R9 1 20.0k Ohm 1% resistor (0603)

R10 1 33.2k Ohm 1% resistor (0603)


R12 1 1.8k Ohm 5% resistor (0603)

R13 1 3.3k Ohm 5% resistor (0603)


R15 1 22.6k Ohm 1% resistor (0603)

R16,R23 2 10.0k Ohm 1% resistor (0603)

R21 1 3.9 Ohm 5% resistor (0603)

R22 1 2.2 Ohm 0.25W 5% resistor (1210)



VP

BST

DH

LX

DL

GND

OUT

FB

POK

5V @ 350mA

6V to 14V

INPUT

FB2

FB3

B2

B3

COMP

1.8V @ 350mA

-48V @ 100mA

ILIM

C1

0.1uF

R1

4.7k

C4

1uF

10V

D1

CMPSH-3

C3

0.1uF

C5,C6

390uF

25V

MV-AX

(2x)

C12

47uF

10V

HC

C13

47uF

10V

HC

C8

680uF

6.3V

OS-CON

R20

1k

R8

4.64k

1%

R9

10.0k

1%

R21

2..0k

R11

30.9k

1%R12

10.0k

1%

N1A

1/2

FDS

6990A

N1B

T1

4:4:17:17:17:17

Lpri = 2.2uH

SG3 (EFD15)

Q1

FTZ749

Q2

FTZ749

VL

SM

01/24/05

R13

3.74k

1%

R14

36.0k

1%

Q3

KSH

29C

3.3V @ 350mA

B4

FB4

FB5

B5

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

U1

MAX1865T

R4

100k

R5

10

R6

10

T1

C14

330uF

10V

MV-AX

D2

EC10QS03L

C17

0.22uF

C26

18uf

63V

MV-AX

C24

0.22uF

25V

CER

C21

0.22uF

25V

CER

C23

0.22uF

25V

CER

C22

0.22uF

25V

CER

T1 T1 T1 T1

C25

39uf

100V

MV-AX

R22

2.0k

C9

680uF

6.3V

OS-CON

1 12

2

11

10 39 4 8 5 7 6

D6

10MQ100ND5

10MQ100ND4

10MQ100N

D3

10MQ100N

POK

C2

100PF

C19

0.1uF

C32

100pF

C31

100pF

C30

100pF

C29

100pF

R2

24.9k

R3

249k

R19

330

R18

330

R17

330

R16

330

R7

100

C28

0.1uF

R10

220

R15

220

MAX1865Vin 6 TO 14 V

Vout 3.3V @ 0.35A, 1.8V @ 0.35A, 5V @ 0.35A, -48V @ 0.1A

+6.4

VOLTS

6.3

VOLTS

VL

VL

MAX1865

6-14V Input

3.3V @ 0.35A, 1.8V @ 0.35A, 5V @ 0.35A, -48V @ 0.1A Out

0

10

20

30

40

50

60

70

80

90

100

5 6 7 8 9 10 11 12 13 14 15

INPUT VOLTS

EFFICIENCY %

EFFICIENCY

MAX1865

6-14V Input

3.3V @ 350mA, 1.8V @ 350mA, 5V @ 350mA, -48V @ 100mA Output

01/24/05


C2, C29 - C32 5 Cap 100pF 100V Ceramic NPO 0603,

Panasonic (ECJ-1VC2A101J)

C1, C3, C19, C28 4 Cap 0.1F 16V Ceramic X7R 0603, Taiyo

Yuden (EMK107BJ104MA)

C17 1 Cap 0.22F 16V Ceramic X5R 0603, Taiyo

Yuden (EMK107BJ224MA)

C21-C24 4 Cap 0.22uF 25V X7R Ceramic 1206,

Panasonic (ECJ-3VB1E224K)

C4 1 Cap 1.0uF 10V X7R Ceramic Cap 0805

Taiyo Yuden (LMK212BJ105MG)

C26 1 18uF 63V Electrolytic, Sanyo (63MV18AX)

C25 1 Cap 39uF 100V Electrolytic, Sanyo

(100MV39AX)

C12, C13

2 Cap 47UF 10V Electrolytic, Sanyo

(10MV47HC)

C14 1 Cap 330uF 10V Electrolytic, Sanyo

(10MV330AX)

C8, C9 2 Cap 680uF 6.3V Organic Semiconductor,

Sanyo (6SP680M)

C5, C6 2 Cap 390 UF 25V Electrolytic,

Sanyo (25MV390AX)

D1 1 Diode 30V 0.1A Schottky SOT-23, Central

Semi (CMPSH-3)

D2 1 Diode 1A 30V Schottky SMA, Nihon

(EC10QS03L)

D3 - D6 4 Diode 1A 100V Schottky SMA,

International Rectifier (10MQ100N)

N1A, N1B 1 NFET Dual 0.023 Ohm 30V SO-8, Fairchild

(FDS6990A)

Q1, Q2 2 Transistor 25V PNP,SOT-223, Fairchild

(FTZ749)

Q3 1 Transistor 100V NPN D-PAK, Fairchild

(KSH29C)

R5, R6 2 Resistor 10 Ohm 5% 0805

R7 1 Resistor 100 Ohm 5% 0805

R10, R15 2 Resistor 220 Ohm 5% 0805

R16 - R19 4 Resistor 330 Ohm 0.25W 5% 1210

R20 1 Resistor 1.0K Ohm 5% 0805

R21, R22 2 Resistor 2.0K Ohm 5% 0805

R8 1 Resistor 4.64k Ohm 1% 0805



R9, R12 2 Resistor 10k Ohm 1% 0805



R14 1 Resistor 36.0k Ohm 0.125W 1% 1206

R4 1 Resistor 100k Ohm 5% 0805

R3 1 Resistor 249k Ohm 1% 0805

T1 1 Transformer EFD 15 4:4:17:17:17:17,

Coiltronics (SG3 AL-2 138)

U1 1 IC xDSL/Cable Modem Quintuple Output

Power Supplies 20 QSOP, Maxim

(MAX1865TEEP)

3.3V to 5.5V Input

12V @ 2.3A Output

9/16/04

668_12f

RWY

9/16/04

9

1

10

2

4

3

5

7

6

8

LDO

SHDN

FREQ

REF

GND

FB

PGND

CS+

EXT

VCC

U1

MAX668

3.3V to 5.5V

VIN

12V @ 2.3A

VOUT

C4

1uF

R4

200k

(250kHz) C3

0.22uF

N1

FDS

6570A

L1

4.7uH D1

CMSH5-40

(2x)

C5

68uF

20V

TANT

(4x)R1

0.007

R2

87.7k

R3

10.0k

R5

100C9

1nF

C8

1uF

16V

C2

0.22uF

C7

1nF

C1

47uF

6V

X5R

(3x)


5.00 0.0006 12.36 0

3.29 9.77 12.08 2.3 0.864

3.61 8.72 12.11 2.3 0.884

4.49 6.82 12.16 2.3 0.913

5.01 6.05 12.18 2.3 0.924

5.52 5.46 12.20 2.3 0.931

20MHz BW 250mVpp

BILL OF MATERIALS

3.3V to 5.5V Input

12V @ 2.3A Output

668_12f








C5 4 68uF 20V tantalum capacitor (X case)








Coiltronics HC2-4R7


Fairchild FDS6570A

R1 1 0.007 Ohm 1W 5% resistor (2512)

R2 1 88.7k Ohm 1% resistor (0603)

R3 1 10.0k Ohm 1% resistor (0603)


R5 1 100 Ohm 5% resistor (0603)


7/20/99 - LHS

+11V to 14.3V Input to 16V at 70 Watts (4.4A)

LDO

FREQ

EXT

FB

U1

MAX668

CS+

Vout

16V 4.4A (70

Watts)

GND

PGND

D1 MBRD835LT4

Q1

NDS8426A

R3

0.012

REFC8

0.22

R5

200k

SHDN

2

4

9

1

8

7

6

5

3

11V to 14.3V

INC1

Sanyo

MV-GX

560uF

25V

R1

12.4k

R2

1kC6

0.047

VCC

10

C7

4.7uF

C2-C5

Sanyo MV-GX

560uF 25V x4

C9

0.001

R6

100

L1

BH Q10284-2

3.9uH, 9A

R7 4.7

NOTES:

1) Capacitor C2-C5 are connected in parallel for ripple

current rating. Fewer caps may be used if ripple current

ratings allow

2) Measured efficiency was 93% at 12V Input and full load

1/31/2000 - LHS

-48V input to +5V, 4A

Unisolated Output

VCC

LDO

FREQ

EXT

FB

U1

MAX668

CS+

Vout

5V 4A

GND

PGND

R2

1.36k

R1

4.7k

D2

Motorola

MBRD660CT

C3,C4

220uF 10V

Q2

MMBT5551

R3

0.04

R7

10 Ohms

D3

12V

zener

R5

47k

C2

0.1

C5

1uF

REF

C6

0.22 - 48V

INPUT

R6

240k

SYNC/SHDN\

C1 120uF

63V

Sanyo

100MV

120GX

24

1

10

9 8

6

7

5

3

Q3:

MMBT5401

C5

1uF

L1

Sumida

CDRH127

47uH 2.5A

Notes:

1) D2 MBRD660CT is a 6A rated 60V Schottky diode. A 4 Amp rated diode would be

sufficient. The diode voltage rating must be greater than Vout-Vin(max)

2) Q1 MTD15N06VL is a 60V rated MOSFET, if the input tolerance requires that the

maximum input voltage will exceed -55V, then a MOSFET with a higher voltage rating will

be needed. It must exceed Vout-Vin(max).

3)Q2(NPN) and Q3(PNP) may be any signal transistor that has a rating exceeding Vout-

Vin(max)

Q1

Motorola

MTD15N06VL

1

10

9

8

6

7

5

3

4

2

C2

0.22uF

C3

10uF

25V

C5

220pF

C6

3x33uF

25V

D1

MBRD640

N1

IRF

7413

R1

100k

(500kHz)

R2

0.02

0.5W

R3

169k

1%

R4

12.1k

1%

VCC

SHDN

LDO

FREQ

REF

GND

FB

PGND

CS+

EXT

MAX668

12V INPUT

+18.75V @ 3.1A

RWY

3/22/00+12V to +18.75V

L1

3.9uH

CDRH

124

C1

1uF

R5

10

C4

47pF

R5

150k

1%

1.25V = 0%

0V = +8%

2.5V = -8%

13.5V to 26.4V Input to 48V at 0.2A Output

668_48a

RWY

9/06/05

9

1

10

2

4

3

5

7

6

8

LDO

SHDN

FREQ

REF

GND

FB

PGND

CS+

EXT

VCC

U1

MAX668

13.5V to 26.4V

VIN

48V @ 0.2A

VOUT

C4

1uF

R4

100k

(500kHz) C3

0.22uF

N1

NDT

3055L

L1

100uH D1

CMR1U-01

C5

39uF

100V

MV-AXR1

0.1

R2

374k

R3

10.0k

R5

100C8

1nF

C2

0.22uF

35V

C1

100uF

35V

MV-AX

R6

10

C6

1nF

C9

0.1uF

100V

#1


15.00 47.79

13.47 0.78 46.64 0.20 0.888

15.00 0.69 46.74 0.20 0.903

26.57 0.38 47.22 0.20 0.935

20MHz BW <800mVpp

#2


15.00 47.90

13.47 0.78 46.76 0.20 0.890

15.00 0.69 46.86 0.20 0.906

26.62 0.38 47.34 0.20 0.936

20MHz BW <700mVpp

BILL OF MATERIALS


48V @ 0.2A Output

9/06/05

668_48a



Sanyo 35MV100AX


Taiyo Yuden GMK212BJ224MG






Sanyo 100MV39AX



D1 1 1A 100V Ultrafast recovery diode


L1 1 100uH 2.4A Power inductor

Coilcraft DS5022P-104

N1 1 120m Ohm 60V N-ch MOSFET (SOT-223)

Fairchild NDT3055L

R1 1 0.1 Ohm 5% resistor (0805)


R3 1 10.0k Ohm 1% resistor (0603)


R5 1 100 Ohm 5% resistor (0603)



1

12/16/98 - LHS

The transformer specs: Primary L=90uH (100uH is fine)

Primary saturation current = 1.2A Turns ratio: 7:3 as shown on the schematic

Full Parts List

C1 47uF 35V Sanyo GX (Tantalum not recommended here)

C2 100uF 10V Tantalum (AVX TPS) or Sanyo GX

-18V to -24V input to +5V/350mA, +3.3V/150mA, -6V/6mA, -24V/30mA, -85V/1mA Unisolated Outputs

VCC

LDO

EXT

FB

U1

MAX668

CS+

Vout1 5V 350mA

GND

PGND

R2 5.11k

R1 18k

D1

Q1

C2 100uF

R3 0.082

R4 10

C4 3.3uF REF

C6 0.1

50V

Vin: -18V to

-24V INPUT

R5 160k

SHDN

C1 47uF 35V

2

4

1

10

9 8

6

7

5

3

C3 1uF

T1 Winding #1 (Primary 90uH, 1.2 Amp peak)

U2

MAX

8867

Vout3 -6V 6mA

Vout2 3.3V 150mA

Vout5 -85V 1mA

-25V to -34V

T1: 90uH, 1A Primary. Turns ratio for windings #1:#2 is 7:3 Primary resistance should be less than 0.3 Ohms

Vout4 -24V 30mA

T1 winding #2

Node swings from +7V to (-25 to -34V) as Vin

varies from -18V to -24V

C7 0.1

50V

C8 1uF 50V

C9 1uF 50V

C10 22uF 50V

C11 0.1

C12 0.1

C13 1uF

160V

R6 10k

R7 10k

R8 27k

Q2

Q3

Q4

Q5

D2

D3

D4 D6

D7 6.2V

D8 24V

D9 43V

D10 43V

C5 0.22

C14 0.01

C15 1uF

3

4

5

5

1

D5

2

C3 1uF ceramic

C4 3.3uF ceramic (tantalum OK here)

C5 0.22uF ceramic

C6, C7, C11, C12

0.1uF 50V ceramic

C8, C9 1uF 50V ceramic (polarity is shown on schematic in case the customer wants to substitute electrolytic caps)

C10 22uF 50V aluminum electrolytic

C13 1uF 160V aluminum electrolytic (Panasonic NHG series: ECA-2CHG010)

C14 0.01uF ceramic

C15 1uF ceramic

D1 MBR0540L 40V 0.5A Schottky diode

D2 Central semiconductor CMPB4448 (or any 1N4448 equivalent 60V signal diode)

D3/D4, D5/D6

Central semiconductor CMPD7000 dual diode (These are duals, but four 1N4448 equivalent 60V signal diodes can be substituted for D3+D4 and D5+D6.)

D7 Zetex BZX84C6V8, Panasonic MA3068CT, or other 6.8V SOT-23 zener diode (On this evaluation board this is composed of a 6.2V diode in series with a silicon diode to make a 6.8V zener. It is shown a single 6.8V zener on the schematic)

D8 Zetex BZX84C24, Panasonic MA3240CT, or other 24V SOT-23 zener diode

D9, D10 Zetex BZX84C43 or other 43V SOT-23 zener diode

R1,R2, R4-R8

1% generic surface mount resistors

R3 0.082Ω current sense resistor IRC, Dale or others

T1 Two-winding custom transformer: Primary inductance: 90uH Primary Ipeak: 1.2 Amps Primary/Secondary turns ratio: 7/3 (This board uses a Coiltronics Standard Geometry core part no: SG2 ER14.5/6 with 28 turns of 30awg wire on the primary and 12 turns of 30awg wire on the secondary

Q1 Fairchild NDT410EL 100V 0.25Ω at 5V Vgs (Any substitute N-FETs should be rated for at least 60V and must have Ron rated at 5V Vgs)

Q2-Q4 2N3906 (any 60V PNP signal transistor is OK)

Q5 Zetex FMMT596 (any 150V PNP signal transistor is OK)

U1 MAX668 PWM DC-DC Controller

U2 MAX8867 linear regulator

Efficiency data:

Vin (v) Iin (mA) Vout (V) Iout (mA) Eff (%)

2.5.17 806 3.244 500 80.0

2.512 2700 3.210 1502 71.1

3.607 559 3.250 500 80.6

3.610 1755 3.225 1502 76.5

6.013 346 3.261 500 78.4

6.008 1018 3.234 1502 79.4

2/16/99 - LHS

+2.5V-6V to 3.3V 1.5A DC-DC SEPIC Converter (3.3V at

1.7A output for Vin > 3.3V)

LDO

FREQ

EXT

FB

U1

MAX669

CS+

Vout

3.3V 1.5A

GND

PGND

D1Q1

C2 10uF 16V

R3

0.02

REFC4

0.22

R5

200k

SHDN

2

4

9

1 8

6

7

5

3

2.5V to 6V

IN C1

180uF

16V

R1

180k

R2

110k

Parts/Notes:

T1A/B: 5.4uH, BH Magnetics #510-1010 (two windings in one octagonal

shaped case. General specs: transformer with two 5uH 4Amp windings

D1: Central Semiconductor CMSH2-40 (or any 2Amp Schottky)

D2 Central Semiconductor CMPSH-3 (or any 100mA Schottky)

Q1: Fairhild NDH833N (any 25mOhm 20V NFET)

R1: Dale WSL2512-R020F (any 20mOhm resistor)

C1: 180uF 10V AVX TPS or Sprague 595 (tantalum) or Sanyo GX (low

ESR aluminum)

C2: 10uF ceramic capacitor

C3: 220uF 10V AVX TPS or Sprague 595 (tantalum) or Sanyo GX (low

ESR aluminum)

Note: This circuit may not start under full load at low input voltages

C5

470pF

VCC

10

C3

220uF

6.3V

T1A

T1B

C6

1uF D2

N1

R212mΩ1W

1

10

9

8

6

7

5

3

4

2

C20.22µF C6

1000pF

C44.7µF 25V

COUT(2) 47µF(1) 10µF

D1

R1100kΩ

(500kHz)

R3218kΩ1%

R424.9kΩ1%

VCC

SHDN

LDO

FREQ

REFGND

FB

PGND

CS+

EXT

U1MAX668

+12V2.5A (max)

8V to 20V into +12.0V up to 2A

T1VP2-0216

C11µF

R50

R6100Ω

C3100pF

1,2,3

10,11,124,5,6

7,8,9

CIN10µF

25V Ceramic

VBIAS4.5V to 5.5V

VIN8V to 20V

T1 = 10.6µH 1:1 COILTRONICS VP2-0216COUT = (2) 47µF 16V 70mΩ SANYO 16TPB47M + (1) 10µF16V CeramicN1 = 13mΩ 40V N-Channel, Fairchild FDS4672A orInnternational Rectifier IRF7468D1 = 3A 40V Schottky Diode

Note: T1 may be replaced with two individual inductors

VFB = 1.25V

C5100pF

OUTPUTVOLTAGE

LOAD CURRENT0.1A to 2A

rev B

MAX1701 R220k

3.8V 0.8A13LXP

L1 10uHSumida

CDRH6D28-100 (10uH 1.7A)

C1220uF6.3VAVXTPS

POUT

OUT C30.22

R110

AO

FB

15

14

D1NihonEC21QS03L

11

9

C4100uF6.3V

GNDPGND512

REF3

10AIN

Q1NDC632P

R5 205k

R6 100kONB\

7

CLK/SEL

POK(POK, LBOUNUSED)

2

6

4

2.7V to5.5V Input

C2220uF

6.3V

C70.22

to OUT

R3215k

R4100k

ONA

LBN

LBP1

8

LBO16

7/20/00RWY

C5100pF

C6560pF

Vin (V) Iin (A) Vout (V) Iout (A) Efficiency2.702 1.327 3.671 0.800 0.81913.001 1.229 3.757 0.800 0.81493.588 0.989 3.765 0.800 0.84883.800 0.925 3.767 0.800 0.85744.199 0.840 3.770 0.800 0.85514.501 0.801 3.781 0.800 0.83905.001 0.799 3.785 0.800 0.7578

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