DC2638A-C (Rev. 0) - analog.com
20
1 DEMO MANUAL DC2638A-C Rev. 0 DESCRIPTION LTM4678 Dual 25A or Single 50A µModule Regulator with Digital Power System Management 4x LTM4678; 200A Demonstration circuit 2638A-C is a high efficiency, high density, µModule regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 3.3V, and it can supply 200A maximum load current. The demo board has four LTM ® 4678 µModule ® regulators, and the LTM4678 is a dual 25A or single 50A step-down regula- tor with PMBus power system management. Please see LTM4678 data sheet for more detailed information. DC2638A-C powers up to default settings and produce power based on configuration resistors without the need for any serial bus communication. This allows easy evalu- ation of the DC/DC converter. To fully explore the extensive power system management features of the part, download All registered trademarks and trademarks are the property of their respective owners. PERFORMANCE SUMMARY BOARD PHOTO the GUI software LTpowerPlay ® onto your PC and use ADI’s I 2 C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on-the-fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status. GUI Download The software can be downloaded from: LTpowerPlay For more details and instructions of LTpowerPlay, please refer to LTpowerPlay GUI for LTM4678 Quick Start Guide. Design files for this circuit board are available. Specifications are at T A = 25°C Figure 1. 4× LTM4678; 200A DC2638A-C Demo Circuit PARAMETER CONDITIONS VALUE Input Voltage Range 4.5V to 16V Output Voltage, V OUT V IN = 4.5V–16V, I OUT = 0A to 200A 0.5V to 3.3V, Default: 1.0V Maximum Output Current, I OUT V IN = 4.5V–16V, V OUT = 0.5V to 3.3V 200A Typical Efficiency V IN = 12V, V OUT = 1.0V, I OUT = 200A 86% (See Figure 5) Default Switching Frequency 350kHz
Transcript of DC2638A-C (Rev. 0) - analog.com
1
DEMO MANUAL DC2638A-C
Rev. 0
DESCRIPTION
LTM4678 Dual 25A or Single 50A µModule Regulator with Digital Power
System Management 4x LTM4678; 200A
Demonstration circuit 2638A-C is a high efficiency, high density, µModule regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 3.3V, and it can supply 200A maximum load current. The demo board has four LTM®4678 µModule® regulators, and the LTM4678 is a dual 25A or single 50A step-down regula-tor with PMBus power system management. Please see LTM4678 data sheet for more detailed information.
DC2638A-C powers up to default settings and produce power based on configuration resistors without the need for any serial bus communication. This allows easy evalu-ation of the DC/DC converter. To fully explore the extensive power system management features of the part, download All registered trademarks and trademarks are the property of their respective owners.
PERFORMANCE SUMMARY
BOARD PHOTO
the GUI software LTpowerPlay® onto your PC and use ADI’s I2C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on-the-fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status.
GUI Download
The software can be downloaded from:
LTpowerPlay
For more details and instructions of LTpowerPlay, please refer to LTpowerPlay GUI for LTM4678 Quick Start Guide.
Design files for this circuit board are available.
Specifications are at TA = 25°C
Figure 1. 4× LTM4678; 200A DC2638A-C Demo Circuit
PARAMETER CONDITIONS VALUE
Input Voltage Range 4.5V to 16V
Output Voltage, VOUT VIN = 4.5V–16V, IOUT = 0A to 200A 0.5V to 3.3V, Default: 1.0V
Maximum Output Current, IOUT VIN = 4.5V–16V, VOUT = 0.5V to 3.3V 200A
Typical Efficiency VIN = 12V, VOUT = 1.0V, IOUT = 200A 86% (See Figure 5)
Default Switching Frequency 350kHz
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DEMO MANUAL DC2638A-C
Rev. 0
QUICK START PROCEDURE
Demonstration circuit 2638A-C is easy to set up to evalu-ate the performance of the LTM4678EY. Refer to Figure 2 for the proper measurement equipment setup and follow the procedure below.
1. With power off, connect the input power supply to VIN (4.5V–16V) and GND (input return).
2. Connect the 1.0V output load between VOUT and GND (Initial load: no load).
3. Connect the DVMs to the input and output. Set default jumper position: SW0: ON; SW1: ON.
4. Turn on the input power supply and check for the proper output voltage. VOUT should be 1.0V±0.5%.
5. Once the proper output voltages are established, ad-just the load within the operating range and observe the output voltage regulation, ripple voltage and other parameters.
6. Connect the dongle and control the output voltage from the GUI. See “LTpowerPlay GUI for the LTM4678 Quick Start Guide” for details.
Note: When measuring the output or input voltage rip-ple, do not use the long ground lead on the oscilloscope probe. See Figure 3 for the proper scope probe technique. Short, stiff leads need to be soldered to the (+) and (–) terminals of an output capacitor. The probe’s ground ring needs to touch the (–) lead and the probe tip needs to touch the (+) lead.
Connecting a PC to DC2638A-C
You can use a PC to reconfigure the power management features of the LTM4678 such as: nominal VOUT, mar-gin set points, OV/UV limits, temperature fault limits, sequencing parameters, the fault log, fault responses, GPIOs and other functionalities. The DC1613A dongle may be plugged when VIN is present.
Table 1. LTM4678 Demo Boards for up to 250A Point-of-Load Regulation
MAXIMUM OUTPUT CURRENT NUMBER OF OUTPUTSNUMBER OF LTM4678 µModule REGULATORS ON THE BOARD DEMO BOARD NUMBER
25A 2 1 DC2552A
50A 1 1 DC2570A
100A 1 2 DC2638A-A
150A 1 3 DC2638A-B
200A 1 4 DC2638A-C
250A 1 5 DC2638A-D
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DEMO MANUAL DC2638A-C
Rev. 0
QUICK START PROCEDURE
Figure 2. Proper Measurement Equipment Setup
Figure 3. Measuring Output Voltage Ripple
VOUT GND
COUT+ -
4
DEMO MANUAL DC2638A-C
Rev. 0
QUICK START PROCEDURE
USB to I2C/PMBusDongle DC1613A
LTM4678 Demo Board DC2638A-C
Input Power Supply
USB Cable VIN
12-PIN (J16)
Connector
Load
VOUT
Figure 4. Demo Setup with PC
Figure 5. Efficiency vs Load Current
EFFI
CIEN
CY (%
)
OUTPUT LOAD CURRENT (A)
95%
90%
85%
80%
75%
70%0 120 140100 160 180 20080604020
12VIN6VIN
VOUT = 1VfSW = 350kHz
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DEMO MANUAL DC2638A-C
Rev. 0
QUICK START PROCEDURE
Figure 6. Output Voltage VOUT vs Load Current @ VIN = 12V, VOUT = 1V, fSW = 350kHz
Figure 7. Output Voltage Ripple @ VIN = 12V, VOUT = 1V, IOUT = 200A, fSW = 350kHz
100µs/DIV
VOUT(20MHz BW)
20mV/DIV
100A TO 150ALOAD STEP
DC2638A-C F06
VOUT(20MHz BW)
10mV/DIV
5µs/DIVDC2638A-C F07
6
DEMO MANUAL DC2638A-C
Rev. 0
QUICK START PROCEDURE
Figure 8. Thermal @ VIN = 12V, VOUT = 1.0V, IOUT = 130A, TA = 25°C, No Airflow
Figure 9. Thermal @ VIN = 12V, VOUT = 1.0V, IOUT = 180A, TA = 25°C, 400LFM Airflow
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DEMO MANUAL DC2638A-C
Rev. 0
LTPOWERPLAY SOFTWARE GUI
Figure 10. LTpowerPlay Main Interface
LTpowerPlay is a powerful Windows-based develop-ment environment that supports Analog Devices power system management ICs and μModules, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882 and LTC3883. The software supports a variety of different tasks. You can use LTpowerPlay to evaluate Analog Devices ICs by connecting to a demo board sys-tem. LTpowerPlay can also be used in an offline mode (with no hardware present) in order to build a multichip configuration file that can be saved and reloaded at a later time. LTpowerPlay provides unprecedented diagnostic and debug features. It becomes a valuable diagnostic tool during board bringup to program or tweak the power management scheme in a system, or to diagnose power issues when bringing up rails. LTpowerPlay utilizes the
DC1613A USB-to-SMBus controller to communicate with one of many potential targets, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882, LTC3883’s demo system, or a customer board. The soft-ware also provides an automatic update feature to keep the software current with the latest set of device drivers and documentation. The LTpowerPlay software can be downloaded from:
LTpowerPlay
To access technical support documents for ADI Digital Power Products visit the LTpowerPlay Help menu. Online help also available through the LTpowerPlay.
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DEMO MANUAL DC2638A-C
Rev. 0
LTPOWERPLAY QUICK START PROCEDUREThe following procedure describes how to use LTpow-erPlay to monitor and change the settings of LTM4678.
1.Download and install the LTpowerPlay GUI:
LTpowerPlay
2. Launch the LTpowerPlay GUI.
a. The GUI should automatically identify the DC2638A-C. The system tree on the left hand side should look like this:
b. A green message box shows for a few seconds in the lower left hand corner, confirming that LTM4678 is com-municating:
c. In the Toolbar, click the “R” (RAM to PC) icon to read the RAM from the LTM4678. This reads the configuration from the RAM of LTM4678 and loads it into the GUI.
d. If you want to change the output voltage to a differ-ent value, like 0.8V. In the Config tab, type in 0.8 in the VOUT_COMMAND box, like this:
Then, click the “W” (PC to RAM) icon to write these reg-ister values to the LTM4678. After finishing this step, you will see the output voltage will change to 0.8V.
If the write is successful, you will see the following message:
e. You can save the changes into the NVM. In the tool bar, click “RAM to NVM” button, as following
f. Save the demo board configuration to a (*.proj) file. Click the Save icon and save the file. Name it whatever you want.
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DEMO MANUAL DC2638A-C
Rev. 0
SCHEMATIC DIAGRAM5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
NOTE
: UNL
ESS
OTHE
RWIS
E SP
ECIF
IED
1. A
LL R
ESIS
TORS
AND
CAP
ACIT
ORS
ARE
0603
.
35V
4.5V
- 16
V
ADJU
STAB
LE
4V
4V12
1012
1012
10
1210
1210
1210
0.035 VIA
TESTPOINTS
µMo
dule
REGU
LATO
R W
ITH
DIGI
TAL
POW
ER M
ANAG
EMEN
T
OFFON
1210
1210
1210
1210
-A
-B
-C
C14
-D
10nF
12nF
18nF
27nF
U1,U2
U1,U2,U3
U1,U2,U3,U4
Module
ASSY
*WHEN VIN <5.75V, SHORT INTVCC to VIN WITH R8=R135=R158=R188=R231=0
*WHEN EXTVCC IS USED, R245=OPEN
U1,U2,U3,U4,U5
Iout
100A
150A
up to
200A
up to
250A
CIN10,
11,12,13
CIN14,
15,16,17
CIN18,
19,20,21
COUT60,
61,64,63
22uF
OPT
OPT
22uF
22uF
22uF
22uF
22uF
OPT
OPT
OPT
OPT
COUT72,
73,75,80
COUT84,
87,88,93COUT58,59,
62,65,66,67
COUT70,71,
74,77,78,79
COUT82,83,
86,89,90,91
OPT
OPT
OPT
OPT
OPT
OPT
470uF
OPT
OPT
470uF
470uF
470uF
470uF
470uF
OPT
100uF
100uF
100uF
100uF
100uF
100uF
OPT
OPT
OPT
*
2-21
-18
VIN
VOU
T
VOU
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VIN
1
VIN
VIN
1
SYN
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10K
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470u
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10K
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SW
0
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0
R8
OPT
CO
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R33
0
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5
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0
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UT8
100u
F
R32
10
R14
10K
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VDD
25
U1
LTM
4678
EY
VOU
T0K7
VOU
T0K8
VOU
T0K9
VOU
T0L1
1
VOUT1A10
VOUT1B7
VOUT1B8
VOUT1B9
VOU
T0K1
0
VOU
T0K1
1
VOU
T0L7
VOU
T0L1
2
VOUT1B10
VOUT1B11
VOUT1B12
VOUT1C7
VOU
T0L8
VOU
T0L9
VOU
T0L1
0
VOU
T0M
7
GNDA3
GNDA4
GNDA5
GNDA6
VOUT1C8
VOUT1C9
VOUT1D7
GNDB1
GNDB3
GNDB4
GNDB5
ASEL
F12
VTR
IM1_
CFG
E10
GNDB6
GNDC1
GNDC2
GNDC3
FAU
LT0
H12
FAU
LT1
G11
GNDC4
TSN
S0B
J8
TSN
S0A
J11
ALER
TH
11
RU
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G12
VOU
T0C
FGE1
1
TSNS1AJ10
TSNS1BD8
GNDC5
GNDC6
GNDD2
GNDD3
SDA
H10
SCL
J12
RU
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F11
VOU
T1C
FGE1
2
WP
C11
GNDD4
GNDD6
GNDE5
GNDE6
GNDF5
GNDF6
SYN
CK1
2
GNDL3
GNDL4
SHAR
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LKD
11
VDD
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GNDF7
GNDG5
GNDK2GNDJ6
GNDK3
GNDG6
CO
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SGNDG10
COMP1aD10
COMP1bC10 GND
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GNDG8
GNDL1
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INTV
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F8
VOSNS1+A11
GNDH5
GNDJ3
GNDJ4
GNDH6
SW0
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GNDL6
GNDJ5
GNDH7
GNDH8
GNDJ2
GNDL5
GNDK4
VIN
0G
4VI
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G3
VIN
0G
2VI
N0
G1
GNDM6
SW0
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GNDK5
GNDM5
VIN1E1
VIN1E2
VIN1E3
VIN1E4
VIN
0H
4VI
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H3
VIN
0H
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H1
SVIN
D1
GNDK6
VIN1F1
VIN1F2
VIN1F3
VIN1F4
SGNDF9
SGNDF10
GNDD5
SW1A2 SW1A1
SW0
L2
SW1B2
VOSNS1-A12
VOU
T0M
8
VOU
T0M
9
VOU
T0M
10
VOUT1A9 VOUT1A8 VOUT1A7
VDD
25D
12
PGO
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0J7
PGO
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1D
9
FSW
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FGE9
VTR
IM0_
CFG
C12
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IN-
K1
GNDM3
GNDM4
E25
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CC
J10
VIN
R30
OPT
R10
4O
PT
P1
C29
OPT
+C
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470u
FC14
*
C30
4.7u
F
CO
UT6
100u
F
CIN
522
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VDD
33
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10K
C17
OPT
R29
OPT
C16
OPT
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4V
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245
0
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J8
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10K
R24
10K
E12
SDA
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0uF
C15
220p
F
R11
10K
C32
OPT
R91
0
R92
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CO
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100u
F
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TVC
C
R27
OPT
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D
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100u
F
R15
10K
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IN1
150u
F
J19
VOU
T
R13
10K
C31
OPT
R10
5O
PT
E10
ALER
TB
CIN
222
uF
P2
E6SH
ARE_
CLK
R12
10K
+C
OU
T12
OPT
4V
E11
SCL
CIN
422
uF
R28
OPT
E5G
ND
R26
787
R31
OPT
E2G
ND
SYN
C
SHAR
E_C
LK
ALER
TB
SCL
SDA
VDD
25
INTV
CC
VDD
25
VOSN
S-
VOSN
S+
VOSNS+
VOSNS-
EXTV
CC
10
DEMO MANUAL DC2638A-C
Rev. 0
SCHEMATIC DIAGRAM5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
0.035 VIA
TESTPOINTS
1210
1210
1210
1210
1210
4V12
1012
10
1210
4V12
1012
10
OFFON
OPTIONAL JUMPER FOR SINGLE OUTPUT CONFIGURATION
2-21
-18
µMo
dule
REGU
LATO
R W
ITH
DIGI
TAL
POW
ER M
ANAG
EMEN
T
VOU
T1 VIN
VIN
VIN
2
VIN
VIN
2
VOSN
S+
VOSN
S-
SYN
C
VOSN
S+
VOSN
S-
SHAR
E_C
LK
ALER
TB
CO
MPa
COMP1a
SCL
SDA
FAU
LT0
RU
N0
FAU
LT1
RU
N1
CO
MPb
VOU
T
COMP1b
VOSN
S1+
VOSN
S1-
EXTV
CC
PGO
OD
1
PGO
OD
0
CO
MP1
aC
OM
Pa
RU
N1
RU
N0
PGO
OD
0
VOSN
S+
PGO
OD
1
VOSN
S-
VOSN
S1+
VOSN
S1-
CO
MPb
CO
MP1
b
VOU
T1VO
UT
FAU
LT0
FAU
LT1
DATE
:SH
EET
OF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O AN
ALOG
DEV
ICES
AND
SUPP
LIED
FOR
USE
WIT
H AN
ALOG
DEV
ICES
PAR
TS.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
27
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
ADA
TE:
SHEE
TOF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O AN
ALOG
DEV
ICES
AND
SUPP
LIED
FOR
USE
WIT
H AN
ALOG
DEV
ICES
PAR
TS.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
27
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
ADA
TE:
SHEE
TOF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O AN
ALOG
DEV
ICES
AND
SUPP
LIED
FOR
USE
WIT
H AN
ALOG
DEV
ICES
PAR
TS.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
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CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
27
HZ H.Zh
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LTM
4678
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HIG
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FICI
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, PO
LY-P
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, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
A
C37
OPT
SW
1
RU
N 1
1 32
E27
PGO
OD
1
R12
80
+C
OU
T54
470u
F4V
R13
0
OPT
U2
LTM
4678
EY
VOU
T0K7
VOU
T0K8
VOU
T0K9
VOU
T0L1
1
VOUT1A10
VOUT1B7
VOUT1B8
VOUT1B9
VOU
T0K1
0
VOU
T0K1
1
VOU
T0L7
VOU
T0L1
2
VOUT1B10
VOUT1B11
VOUT1B12
VOUT1C7
VOU
T0L8
VOU
T0L9
VOU
T0L1
0
VOU
T0M
7
GNDA3
GNDA4
GNDA5
GNDA6
VOUT1C8
VOUT1C9
VOUT1D7
GNDB1
GNDB3
GNDB4
GNDB5
ASEL
F12
VTR
IM1_
CFG
E10
GNDB6
GNDC1
GNDC2
GNDC3
FAU
LT0
H12
FAU
LT1
G11
GNDC4
TSN
S0B
J8
TSN
S0A
J11
ALER
TH
11
RU
N0
G12
VOU
T0C
FGE1
1
TSNS1AJ10
TSNS1BD8
GNDC5
GNDC6
GNDD2
GNDD3
SDA
H10
SCL
J12
RU
N1
F11
VOU
T1C
FGE1
2
WP
C11
GNDD4
GNDD6
GNDE5
GNDE6
GNDF5
GNDF6
SYN
CK1
2
GNDL3
GNDL4
SHAR
E_C
LKD
11
VDD
33E8
GNDF7
GNDG5
GNDK2GNDJ6
GNDK3
GNDG6
CO
MP0
bH
9C
OM
P0a
J9
SGNDG9
SGNDG10
COMP1aD10
COMP1bC10 GND
G7
GNDG8
GNDL1
VOSN
S0+
M11
VOSN
S0-
M12
INTV
CC
E7
EXTV
CC
F8
VOSNS1+A11
GNDH5
GNDJ3
GNDJ4
GNDH6
SW0
M2
GNDL6
GNDJ5
GNDH7
GNDH8
GNDJ2
GNDL5
GNDK4
VIN
0G
4VI
N0
G3
VIN
0G
2VI
N0
G1
GNDM6
SW0
M1
GNDK5
GNDM5
VIN1E1
VIN1E2
VIN1E3
VIN1E4
VIN
0H
4VI
N0
H3
VIN
0H
2VI
N0
H1
SVIN
D1
GNDK6
VIN1F1
VIN1F2
VIN1F3
VIN1F4
SGNDF9
SGNDF10
GNDD5
SW1A2 SW1A1
SW0
L2
SW1B2
VOSNS1-A12
VOU
T0M
8
VOU
T0M
9
VOU
T0M
10
VOUT1A9 VOUT1A8 VOUT1A7
VDD
25D
12
PGO
OD
0J7
PGO
OD
1D
9
FSW
PH_C
FGE9
VTR
IM0_
CFG
C12
IN+
J1
IN-
K1
GNDM3
GNDM4
R15
00
P7
CO
UT5
210
0uF
E1VO
UT1
_SN
S
J13
VOU
T1
C35
OPT
R14
1O
PT
R14
4O
PT
E14
FAU
LT1
R14
60
R13
1O
PT
R14
90
+C
OU
T50
470u
F4V
+C
OU
T51
OPT
CO
UT4
710
0uF
P4
R13
5
OPT
R14
510
K
CIN
922
uF
R12
90
CIN
722
uF
R14
2O
PT
R14
0O
PT
R12
60.
005
2010
C85
4.7u
F
CO
UT5
310
0uF
R14
80
R12
70
R15
20
R13
91.
65K
R13
710
K
C81
2.2u
F
P3
R15
30
2010
+C
OU
T57
OPT
R15
40
2010
R13
3
OPT
R15
50
2010
R15
60
2010
C34
OPT
R13
610
K
E7G
ND
1_SN
S
R13
4
OPT
C38
OPT
+C
OU
T56
470u
F4V
R14
70
+C
OU
T48
470u
F4V
C36
OPT
CIN
622
uF
CO
UT4
910
0uF
R15
10
R13
810
K
J5G
ND
R14
3O
PTC
OU
T46
100u
F
C39 O
PT
C33
OPT
CO
UT5
510
0uF
CIN
822
uF
RU
N1
SHAR
E_C
LK
ALER
TB
SCL
SDA
VOSN
S1+
VOSN
S1-
VOSNS1+
VOSNS1-
SYN
C
11
DEMO MANUAL DC2638A-C
Rev. 0
SCHEMATIC DIAGRAM5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
1210
1210
1210
1210
0.035 VIA
TESTPOINTS
1210
4V1210
1210
1210
4V1210
1210
2-21
-18
µMo
dule
REGU
LATO
R W
ITH
DIGI
TAL
POW
ER M
ANAG
EMEN
T
VIN
VIN3
VIN
VIN3
VIN
SHAR
E_CLK
ALER
TB
COMPa
COMPa
SCL
SDA
PGOOD0
FAULT0
RUN0
COMPb
COMPb
VOUT
SYNC
EXTV
CC
VOSN
S+
VOSN
S-
VOUT
DATE
:SH
EET
OF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O AN
ALOG
DEV
ICES
AND
SUPP
LIED
FOR
USE
WIT
H AN
ALOG
DEV
ICES
PAR
TS.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
37
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
ADA
TE:
SHEE
TOF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O AN
ALOG
DEV
ICES
AND
SUPP
LIED
FOR
USE
WIT
H AN
ALOG
DEV
ICES
PAR
TS.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
37
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
ADA
TE:
SHEE
TOF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O AN
ALOG
DEV
ICES
AND
SUPP
LIED
FOR
USE
WIT
H AN
ALOG
DEV
ICES
PAR
TS.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
37
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
A
CIN11 *
R164
0
C43
OPT
R179
0
C41
4.7uF
U3 *
VOUT0
K7
VOUT0
K8
VOUT0
K9
VOUT0
L11
VOUT1A10
VOUT1B7
VOUT1B8
VOUT1B9
VOUT0
K10
VOUT0
K11
VOUT0
L7
VOUT0
L12
VOUT1B10
VOUT1B11
VOUT1B12
VOUT1C7
VOUT0
L8
VOUT0
L9
VOUT0
L10
VOUT0
M7
GNDA3
GNDA4
GNDA5
GNDA6
VOUT1C8
VOUT1C9
VOUT1D7
GNDB1
GNDB3
GNDB4
GNDB5
ASEL
F12
VTRIM1_CFG
E10
GNDB6
GNDC1
GNDC2
GNDC3
FAULT0
H12
FAULT1
G11
GNDC4
TSNS0
BJ8
TSNS0
AJ11
ALER
TH11
RUN0
G12
VOUT0CFG
E11
TSNS1AJ10
TSNS1BD8
GNDC5
GNDC6
GNDD2
GNDD3
SDA
H10
SCL
J12
RUN1
F11
VOUT1CFG
E12
WP
C11
GNDD4
GNDD6
GNDE5
GNDE6
GNDF5
GNDF6
SYNC
K12
GNDL3
GNDL4
SHAR
E_CLK
D11
VDD33
E8
GNDF7
GNDG5
GNDK2GNDJ6
GNDK3
GNDG6
COMP0
bH9
COMP0
aJ9
SGNDG9
SGNDG10
COMP1aD10
COMP1bC10 GND
G7
GNDG8
GNDL1
VOSN
S0+
M11
VOSN
S0-
M12
INTV
CC
E7
EXTV
CC
F8
VOSNS1+A11
GNDH5
GNDJ3
GNDJ4
GNDH6
SW0
M2
GNDL6
GNDJ5
GNDH7
GNDH8
GNDJ2
GNDL5
GNDK4
VIN0
G4
VIN0
G3
VIN0
G2
VIN0
G1
GNDM6
SW0
M1
GNDK5
GNDM5
VIN1E1
VIN1E2
VIN1E3
VIN1E4
VIN0
H4
VIN0
H3
VIN0
H2
VIN0
H1
SVIN
D1
GNDK6
VIN1F1
VIN1F2
VIN1F3
VIN1F4
SGNDF9
SGNDF10
GNDD5
SW1A2 SW1A1
SW0
L2
SW1B2
VOSNS1-A12
VOUT0
M8
VOUT0
M9
VOUT0
M10
VOUT1A9 VOUT1A8 VOUT1A7
VDD25
D12
PGOOD0
J7
PGOOD1
D9
FSWPH
_CFG
E9
VTRIM0_CFG
C12
IN+
J1
IN-
K1
GNDM3
GNDM4
+COUT64
*
COUT58
*R159
OPT
C47
OPT
C46
OPT
P6
+COUT63
* 4V
+COUT60
*4V
P8
R173
0.005
2010
R182
OPT
COUT67
*
CIN10 *
C83
2.2uF
COUT66
*
P9
COUT62
*
C45
OPT
R185 0
CIN12 *
R1780
R183
OPT
R160
OPT
R177
0
R1812.43k
COUT59
*
R158
OPT
+COUT61
* 4V
R184OPT
C40
OPT
R162
10K
+COUT69
OPT
4V
P5
CIN13 *
COUT65
*
R166
OPT
+COUT68
OPT
R174
OPT
VOSNS+
VOSNS-
12
DEMO MANUAL DC2638A-C
Rev. 0
SCHEMATIC DIAGRAM5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
1210
1210
1210
1210
0.035 VIA
TESTPOINTS
1210
4V1210
1210
1210
4V1210
1210
2-21
-18
µMo
dule
REGU
LATO
R W
ITH
DIGI
TAL
POW
ER M
ANAG
EMEN
T
VIN
VIN4
VIN
VIN4
VIN
VOUT
SHAR
E_CLK
ALER
TB
COMPa
COMPa
SCL
SDA
PGOOD0
FAULT0
RUN0
COMPb
COMPb
VOUT
SYNC
EXTV
CC
VOSN
S+
VOSN
S-
DATE
:SH
EET
OF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O AN
ALOG
DEV
ICES
AND
SUPP
LIED
FOR
USE
WIT
H AN
ALOG
DEV
ICES
PAR
TS.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
47
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
ADA
TE:
SHEE
TOF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O AN
ALOG
DEV
ICES
AND
SUPP
LIED
FOR
USE
WIT
H AN
ALOG
DEV
ICES
PAR
TS.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
47
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
ADA
TE:
SHEE
TOF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O AN
ALOG
DEV
ICES
AND
SUPP
LIED
FOR
USE
WIT
H AN
ALOG
DEV
ICES
PAR
TS.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
47
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
A
R1983.24k
R186 0
+COUT72
*4V
P11
+COUT76
OPT
4V
R197
0
COUT71
*
C53
OPT
+COUT81
OPT
4V
R187
0
R189
OPT
CIN14 *
R192
OPT
P12
C52
OPT
COUT70
*
CIN16 *
C51
OPT
R191
10K
C48
OPT
R200
OPT
COUT77
*
C49
4.7uF P1
0
+COUT80
*COUT74
*
R194
OPT
C82
2.2uF
R190
OPT
R195
0
R188
OPT
COUT79
*
R199
OPT
R193
0.005
2010
U4 *
VOUT0
K7
VOUT0
K8
VOUT0
K9
VOUT0
L11
VOUT1A10
VOUT1B7
VOUT1B8
VOUT1B9
VOUT0
K10
VOUT0
K11
VOUT0
L7
VOUT0
L12
VOUT1B10
VOUT1B11
VOUT1B12
VOUT1C7
VOUT0
L8
VOUT0
L9
VOUT0
L10
VOUT0
M7
GNDA3
GNDA4
GNDA5
GNDA6
VOUT1C8
VOUT1C9
VOUT1D7
GNDB1
GNDB3
GNDB4
GNDB5
ASEL
F12
VTRIM1_CFG
E10
GNDB6
GNDC1
GNDC2
GNDC3
FAULT0
H12
FAULT1
G11
GNDC4
TSNS0
BJ8
TSNS0
AJ11
ALER
TH11
RUN0
G12
VOUT0CFG
E11
TSNS1AJ10
TSNS1BD8
GNDC5
GNDC6
GNDD2
GNDD3
SDA
H10
SCL
J12
RUN1
F11
VOUT1CFG
E12
WP
C11
GNDD4
GNDD6
GNDE5
GNDE6
GNDF5
GNDF6
SYNC
K12
GNDL3
GNDL4
SHAR
E_CLK
D11
VDD33
E8
GNDF7
GNDG5
GNDK2GNDJ6
GNDK3
GNDG6
COMP0
bH9
COMP0
aJ9
SGNDG9
SGNDG10
COMP1aD10
COMP1bC10 GND
G7
GNDG8
GNDL1
VOSN
S0+
M11
VOSN
S0-
M12
INTV
CC
E7
EXTV
CC
F8
VOSNS1+A11
GNDH5
GNDJ3
GNDJ4
GNDH6
SW0
M2
GNDL6
GNDJ5
GNDH7
GNDH8
GNDJ2
GNDL5
GNDK4
VIN0
G4
VIN0
G3
VIN0
G2
VIN0
G1
GNDM6
SW0
M1
GNDK5
GNDM5
VIN1E1
VIN1E2
VIN1E3
VIN1E4
VIN0
H4
VIN0
H3
VIN0
H2
VIN0
H1
SVIN
D1
GNDK6
VIN1F1
VIN1F2
VIN1F3
VIN1F4
SGNDF9
SGNDF10
GNDD5
SW1A2 SW1A1
SW0
L2
SW1B2
VOSNS1-A12
VOUT0
M8
VOUT0
M9
VOUT0
M10
VOUT1A9 VOUT1A8 VOUT1A7
VDD25
D12
PGOOD0
J7
PGOOD1
D9
FSWPH
_CFG
E9
VTRIM0_CFG
C12
IN+
J1
IN-
K1
GNDM3
GNDM4
CIN17 *
+COUT73
*4V
C50
OPT
CIN15 *
R201OPT
P13
R1960
+COUT75
*COUT78
*
VOSNS+
VOSNS-
13
DEMO MANUAL DC2638A-C
Rev. 0
SCHEMATIC DIAGRAM5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
1210
1210
1210
1210
0.035 VIA
TESTPOINTS
1210
4V1210
1210
1210
4V1210
1210
2-21
-18
µMo
dule
REGU
LATO
R W
ITH
DIGI
TAL
POW
ER M
ANAG
EMEN
T
VIN
VIN5
VIN
VIN5
VIN
VOUT
SHAR
E_CLK
ALER
TB
COMPa
COMPa
SCL
SDA
PGOOD0
FAULT0
RUN0
COMPb
COMPb
VOUT
SYNC
EXTV
CC
VOSN
S+
VOSN
S-
DATE
:SH
EET
OF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O AN
ALOG
DEV
ICES
AND
SUPP
LIED
FOR
USE
WIT
H AN
ALOG
DEV
ICES
PAR
TS.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
57
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
ADA
TE:
SHEE
TOF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O AN
ALOG
DEV
ICES
AND
SUPP
LIED
FOR
USE
WIT
H AN
ALOG
DEV
ICES
PAR
TS.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
57
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
ADA
TE:
SHEE
TOF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O AN
ALOG
DEV
ICES
AND
SUPP
LIED
FOR
USE
WIT
H AN
ALOG
DEV
ICES
PAR
TS.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
57
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
A
R2414.22k
R235
OPT
+COUT93
* 4V
P15
COUT82
*COUT86
*
COUT90
*+
COUT85
OPT
4V
CIN20
*
R240
0
CIN18
*
C79
OPT
R232
OPT
R234
10K
R229 0
COUT89
*
P14
CIN21
*
+COUT92
OPT
C76
OPT
C78
OPT
C74
OPT
R243
OPT
R231
OPT
R244OPT
C84
2.2uF
C75
4.7uF
C77
OPT
P16
CIN19
*
R242
OPT
R233
OPT
P17
R2390
R236
0.005
2010
U5
*
VOUT0
K7
VOUT0
K8
VOUT0
K9
VOUT0
L11
VOUT1A10
VOUT1B7
VOUT1B8
VOUT1B9
VOUT0
K10
VOUT0
K11
VOUT0
L7
VOUT0
L12
VOUT1B10
VOUT1B11
VOUT1B12
VOUT1C7
VOUT0
L8
VOUT0
L9
VOUT0
L10
VOUT0
M7
GNDA3
GNDA4
GNDA5
GNDA6
VOUT1C8
VOUT1C9
VOUT1D7
GNDB1
GNDB3
GNDB4
GNDB5
ASEL
F12
VTRIM1_CFG
E10
GNDB6
GNDC1
GNDC2
GNDC3
FAULT0
H12
FAULT1
G11
GNDC4
TSNS0
BJ8
TSNS0
AJ11
ALER
TH11
RUN0
G12
VOUT0CFG
E11
TSNS1AJ10
TSNS1BD8
GNDC5
GNDC6
GNDD2
GNDD3
SDA
H10
SCL
J12
RUN1
F11
VOUT1CFG
E12
WP
C11
GNDD4
GNDD6
GNDE5
GNDE6
GNDF5
GNDF6
SYNC
K12
GNDL3
GNDL4
SHAR
E_CLK
D11
VDD33
E8
GNDF7
GNDG5
GNDK2GNDJ6
GNDK3
GNDG6
COMP0
bH9
COMP0
aJ9
SGNDG9
SGNDG10
COMP1aD10
COMP1bC10 GND
G7
GNDG8
GNDL1
VOSN
S0+
M11
VOSN
S0-
M12
INTV
CC
E7
EXTV
CC
F8
VOSNS1+A11
GNDH5
GNDJ3
GNDJ4
GNDH6
SW0
M2
GNDL6
GNDJ5
GNDH7
GNDH8
GNDJ2
GNDL5
GNDK4
VIN0
G4
VIN0
G3
VIN0
G2
VIN0
G1
GNDM6
SW0
M1
GNDK5
GNDM5
VIN1E1
VIN1E2
VIN1E3
VIN1E4
VIN0
H4
VIN0
H3
VIN0
H2
VIN0
H1
SVIN
D1
GNDK6
VIN1F1
VIN1F2
VIN1F3
VIN1F4
SGNDF9
SGNDF10
GNDD5
SW1A2 SW1A1
SW0
L2
SW1B2
VOSNS1-A12
VOUT0
M8
VOUT0
M9
VOUT0
M10
VOUT1A9 VOUT1A8 VOUT1A7
VDD25
D12
PGOOD0
J7
PGOOD1
D9
FSWPH
_CFG
E9
VTRIM0_CFG
C12
IN+
J1
IN-
K1
GNDM3
GNDM4
+COUT88
*
R238
0
R237
OPT
+COUT84
* 4V+
COUT87
* 4V
COUT91
*
COUT83
*
R230
0
VOSNS+
VOSNS-
14
DEMO MANUAL DC2638A-C
Rev. 0
SCHEMATIC DIAGRAM5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
ON OFF
PULS
E
BIAS
ALL
PAR
TS O
N T
HIS
PAG
E AR
E FO
R D
EMO
ON
LY, N
OT
NEE
DED
IN C
UST
OM
ER D
ESIG
N
OPT
2512
2512
OPT
DYN
AMIC
LO
AD C
IRC
UIT
BLEEDER LOADS
70H
z, 3
% D
uty
Cyc
leIN
TEX
T
1% 1%
0805
IOU
TVOU
T
2-21
-18
VIN
VOU
TVO
UT1
VOU
T
+5.5
V
+5.5
V
EXTV
CC
VOU
T1VO
UT
DATE
:SH
EET
OF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O A
NALO
G D
EVIC
ES A
NDSU
PPLI
ED F
OR
USE
WIT
H AN
ALO
G D
EVIC
ES P
ARTS
.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
67
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
ADA
TE:
SHEE
TOF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O A
NALO
G D
EVIC
ES A
NDSU
PPLI
ED F
OR
USE
WIT
H AN
ALO
G D
EVIC
ES P
ARTS
.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
67
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
ADA
TE:
SHEE
TOF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O A
NALO
G D
EVIC
ES A
NDSU
PPLI
ED F
OR
USE
WIT
H AN
ALO
G D
EVIC
ES P
ARTS
.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
67
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
A
R10
2
CO
UT9
5
100u
F
C64
4.7u
F
R11
31.
4K
R11
610
K
R12
310
00K
C70
1uF
U8
LT18
03IS
5
VOU
T1
V-2
+IN
3-IN
4
V+5
C69
1.8n
F
R11
210
0
Q12
SUD
50N
04-8
M8P
-4G
E3
1
23
R20
20
CO
UT9
4
R22
6
10k
R20
582
.5
R10
3
R11
05K
CO
UT9
9
C68
1uF
Q11
SUD
50N
04-8
M8P
-4G
E3
1
23
R11
415
4kR
204
3.3
E23
EXT
PULS
E
E24 G
ND
JP2
1
2
3
JP1
1
2
3
CO
UT9
7
R20
368
1K
R11
80.
01
C65
1uF
R11
120
K
J14
1
2345
R11
72
U6
LT11
29C
S8OU
TPU
T1
SEN
SE/A
DJ
2G
ND
3N
C4
SHD
N5
GN
D6
GN
D7
VIN
8
R22
8
OPT
C67
0.1u
F
CO
UT9
8
C66
0.22
uF
J15
1
2345
R11
520
K
CO
UT9
6
U7
LTC
6992
-1
MO
D1
GN
D2
SET
3D
IV4
V+5
OU
T6
R10
910
0K
R22
74.
7k
R10
80.
01
15
DEMO MANUAL DC2638A-C
Rev. 0
SCHEMATIC DIAGRAM5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
J1, MALE, CONN HEADER 14POS 2MM R/A GOLD, Molex Connector Corp. 87760-1416
J2, FEMALE, CONN RECEPT 2MM DUAL R/A 14POS, Sullins Conn.
NPPN072FJFN-RC
TO D
C16
13A
PSM STACKING CONNECTORS:
OPTIONAL CIRCUIT FOR PROGRAMMING
WITHOUT VIN
1206
TO D
C20
86A
ALL
PAR
TS O
N T
HIS
PAG
E AR
E FO
R D
EMO
ON
LY, N
OT
NEE
DED
IN C
UST
OM
ER D
ESIG
N
FAU
LT0
FAU
LT1
ALER
TB
PGO
OD
0PG
OO
D1
2-21
-18
3V3
VIN3V
3VD
D33
VIN
3V3
3V3
3V3
3V3
3V3
3V3
VDD
33
ALER
TBSD
ASC
L
RU
N0
RU
N1
FAU
LT1
FAU
LT0
SYN
C
SHAR
E_C
LK
VDD
33
FAU
LT0
FAU
LT1
ALER
TB
PGO
OD
0PG
OO
D1
DATE
:SH
EET
OF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O AN
ALOG
DEV
ICES
AND
SUPP
LIED
FOR
USE
WIT
H AN
ALOG
DEV
ICES
PAR
TS.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
77
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
ADA
TE:
SHEE
TOF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O AN
ALOG
DEV
ICES
AND
SUPP
LIED
FOR
USE
WIT
H AN
ALOG
DEV
ICES
PAR
TS.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
77
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
ADA
TE:
SHEE
TOF
TITL
E: S
CHEM
ATIC
APPR
OVAL
SPC
B DE
S.
APP
ENG.
Phon
e: (4
08)4
32-1
900
www.
linea
r.com
SIZE
:
SCHE
MAT
IC N
O. A
ND R
EVIS
ION:
CUST
OMER
NOT
ICE
THIS
CIR
CUIT
IS P
ROPR
IETA
RY T
O AN
ALOG
DEV
ICES
AND
SUPP
LIED
FOR
USE
WIT
H AN
ALOG
DEV
ICES
PAR
TS.
www.
analo
g.com
SKU
NO.
IC N
O.
ANAL
OG D
EVIC
ES H
AS M
ADE
A BE
ST E
FFOR
T TO
DES
IGN
ACI
RCUI
T TH
AT M
EETS
CUS
TOME
R-SU
PPLI
ED S
PECI
FICA
TION
S;HO
WEV
ER, IT
REM
AINS
THE
CUS
TOME
R'S
RESP
ONSI
BILI
TY T
OVE
RIFY
PRO
PER
AND
RELI
ABLE
OPE
RATI
ON IN
THE
ACT
UAL
APPL
ICAT
ION.
COM
PONE
NT S
UBST
ITUT
ION
AND
PRIN
TED
CIRC
UIT
BOAR
D LA
YOUT
MAY
SIG
NIFI
CANT
LY A
FFEC
T CI
RCUI
TPE
RFOR
MANC
E OR
REL
IABI
LITY
. CON
TACT
ANA
LOG
DEV
ICES
APPL
ICAT
IONS
ENG
INEE
RING
FOR
ASS
ISTA
NCE.
77
HZ H.Zh
ou
LTM
4678
EY
HIG
H EF
FICI
ENCY
, PO
LY-P
HASE
, DC/
DC S
TEP-
DOW
N
DC26
38A
DC26
381A
-A/B
/C/D
_REV
02N/
A
R21
34.
99K
R85
200
J16
AUXP
1
SDA
2
GN
D3
SCL
4
LGKP
WR
5
ALER
TB6
GPI
O_1
7
OU
TEN
_08
OU
TEN
_19
GN
D10
AUXS
CL
11
AUXS
DA
12
R22
520
0
R21
4O
PT
E21
RU
N1
D4
OPT
R22
1O
PT
D2
GR
EEN
R21
50
R20
910
R12
510
R21
010
K
R21
6O
PT
R22
20
E19
RU
N0
C71 100n
F
D3
RED
C73
10nF
R21
7O
PT
R21
8O
PT
R22
34.
99K
J12
DEM
O H
EAD
ER (F
)
FAU
LTB
1
CTR
L2
ALER
TB3
SDA
4
SHAR
E_C
LK5
SCL
6
RES
ETB
7
AUXP
8
UN
USE
D9
UN
USE
D10
GN
D11
GN
D12
12V
13
12V
14
Q19
DM
P313
0L-7
23
1
R86
127
Q20
2N70
02K
23
1
J17
DEM
O H
EAD
ER (M
)
FAU
LTB
1
CTR
L2
ALER
TB3
SDA
4
SHAR
E_C
LK5
SCL
6
RES
ETB
7
AUXP
8
UN
USE
D9
UN
USE
D10
GN
D11
GN
D12
12V
13
12V
14
R20
6O
PT
R21
9O
PT
R12
420
0
D9
GR
EEN
Q4
2N70
02K
23
1
E29
SGN
D
R20
7O
PT
D5
OPT
R22
420
0
U9
24LC
025-
I/ST
A01
A12
A23
VSS
4SD
A5
SCL
6W
P7
VCC
8
J18
AUX3
V44
SCL
3
GN
D2 1
SDA
Q2
SI23
65ED
S-T1
-GE3
2 3
1
C72
10nF
R21
10
E28
AUXP
Q21
2N70
02K
23
1
D1
GR
EEN
E22 SG
ND
R13
2O
PT
R22
015
.8k
R20
8O
PT
D10
GR
EEN
D8
21
R21
2O
PT
Q3
2N70
02K
23
1
AUX3
V4
AUXV
CC
EEW
P
EESD
A
EESC
L
16
DEMO MANUAL DC2638A-C
Rev. 0
PARTS LISTITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 1 CIN1 CAP., 150μF, ALUM. ELECT., 35V, 20%, 8mm × 10.2mm SMD, RADIAL, AEC-Q200
PANASONIC, EEHZA1V151P
2 30 COUT1, COUT2, COUT3, COUT6, COUT7, COUT8, COUT46, COUT47, COUT49, COUT52, COUT53, COUT55, COUT58, COUT59, COUT62, COUT65, COUT66, COUT67, COUT70, COUT71, COUT74, COUT77, COUT78, COUT79, COUT94, COUT95, COUT96, COUT97, COUT98, COUT99
CAP., 100μF, X5R, 6.3V, 20%, 1210 AVX, 12106D107MAT2A MURATA, GRM32ER60J107ME20L TDK, C3225X5R0J107M250AC
3 16 CIN2, CIN3, CIN4, CIN5, CIN6, CIN7, CIN8, CIN9, CIN10, CIN11, CIN12, CIN13, CIN14, CIN15, CIN16, CIN17
CAP., 22μF, X5R, 25V, 10%, 1210 AVX, 12103D226KAT2A MURATA, GRM32ER61E226KE15L TAIYO YUDEN, TMK325BJ226KM-P TAIYO YUDEN, TMK325BJ226KM-T
4 16 COUT4, COUT9, COUT10, COUT11, COUT48, COUT50, COUT54, COUT56, COUT60, COUT61, COUT63, COUT64, COUT72, COUT73, COUT75, COUT80
CAP., 470μF, TANT. POSCAP, 4V, 20%, 7343, 10mΩ, TPF, NO SUBS. ALLOWED
PANASONIC, 4TPF470ML
5 0 COUT5, COUT12, COUT51, COUT57, COUT68, COUT69, COUT76, COUT81, COUT84, COUT85, COUT87, COUT88, COUT92, COUT93
CAP., OPTION, D3L
6 1 C14 CAP., 0.018μF, X7R, 16V, 10%, 0603 AVX, 0603YC183KAT2A KEMET, C0603C183K4RACTU NIC, NMC0603X7R183K16TRPF
7 1 C15 CAP., 220pF, X7R, 16V, 10%, 0603 AVX, 0603YC221KAT2A KEMET, C0603C221K4RACTU NIC, NMC0603X7R221K16TRPF
10 6 C30, C41, C49, C64, C75, C85 CAP., 4.7μF, X5R, 25V, 10%, 0603, NO SUBS. ALLOWED MURATA, GRM188R61E475KE11D
11 2 C65, C68 CAP., 1μF, X7R, 25V, 10%, 1206 AVX, 12063C105KAT2A MURATA, GRM31MR71E105KA01L TAIYO YUDEN, TMK316B7105KL-T TDK, C3216X7R1E105K160AA
12 1 C66 CAP., 0.22μF, X5R, 25V, 10%, 0805 AVX, 08053D224KAT2A TAIYO YUDEN, TMK212BJ224KGHT VENKEL LTD., C0805X5R250-224KNE
13 1 C67 CAP., 0.1μF, X7R, 25V, 10%, 1206 AVX, 12063C104KAT2A NIC, NMC1206X7R104K25TRPF
14 1 C69 CAP., 1800pF, X7R, 16V, 10%, 0603 AVX, 0603YC182KAT2A KEMET, C0603C182K4RACTU NIC, NMC0603X7R182K16TRPF
15 1 C70 CAP., 1μF, X5R, 25V, 10%, 0805 AVX, 08053D105KAT2A MURATA, GRM216R61E105KA12D TDK, CGB4B3X5R1E105K055AB
16 1 C71 CAP., 0.1μF, X7R, 25V, 10%, 0603 AVX, 06033C104KAT2A KEMET, C0603C104K3RACTU NIC, NMC0603X7R104K25TRPF TDK, C1608X7R1E104K080AA
17 2 C72, C73 CAP., 0.01μF, X7R, 25V, 10%, 0603 AVX, 06033C103KAT2A MURATA, GRM188R71E103KA01D YAGEO, CC0603KRX7R8BB103
18 5 C80, C81, C82, C83, C84 CAP., 2.2μF, X7R, 25V, 10%, 0603 MURATA, GRM188Z71E225KE43D
19 4 D1, D2, D9, D10 LED, GREEN, WATERCLEAR, 0603 WURTH ELEKTRONIK, 150060GS75000
17
DEMO MANUAL DC2638A-C
Rev. 0
PARTS LISTITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components20 1 D3 LED, SUPER RED, WATERCLEAR, 0603 WURTH ELEKTRONIK, 150060SS75000
22 1 D8 DIODE, SCHOTTKY RECT., 20V, 0.5A, SOD-882D, LEADLESS, 2-TERM.
NEXPERIA, PMEG2005AELD, 315
36 1 Q2 XSTR., MOSFET, P-CH, 20V, 5.9A, TO-236 (SOT23-3) VISHAY, SI2365EDS-T1-GE3
37 4 Q3, Q4, Q20, Q21 XSTR., MOSFET, SINGLE N-CH, 60V, 380mA, SOT23-3, AEC-Q101
ON SEMICONDUCTOR, 2N7002KT1G
38 2 Q11, Q12 XSTR., MOSFET, N-CH, 40V, TO-252 (DPAK) VISHAY, SUD50N04-8M8P-4GE3
39 1 Q19 XSTR., MOSFET, P-CH, 30V, 3.5A, SOT23-3, AEC-Q101 DIODES INC., DMP3130L-7
41 36 R9, R33, R91, R92, R106, R107, R127, R128, R129, R146, R147, R148, R149, R150, R151, R152, R164, R177, R178, R179, R185, R186, R187, R195, R196, R197, R202, R211, R215, R222, R229, R230, R238, R239, R240, R245
RES., 0Ω, 1/10W, 0603, AEC-Q200 NIC, NRC06ZOTRF VISHAY, CRCW06030000Z0EA
42 20 R10,R11,R12,R13,R14,R15,R16,R18,R24,R95,R116,R136,R137,R138,R145,R162,R191,R210,R226,R234
RES., 10k, 1%, 1/10W, 0603, AEC-Q200 KOA SPEER, RK73H1JTTD1002F PANASONIC, ERJ3EKF1002V VISHAY, CRCW060310K0FKEA
43 4 R25, R32, R125, R209 RES., 10Ω, 1%, 1/10W, 0603 NIC, NRC06F10R0TRF PANASONIC, ERJ3EKF10R0V ROHM, MCR03EZPFX10R0 VISHAY, CRCW060310R0FKEA YAGEO, RC0603FR-0710RL
44 1 R26 RES., 787Ω, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F7870TRF PANASONIC, ERJ3EKF7870V VISHAY, CRCW0603787RFKEA
45 4 R85, R124, R224, R225 RES., 200Ω, 1%, 1/10W, 0603 NIC, NRC06F2000TRF VISHAY, CRCW0603200RFKEA YAGEO, RC0603FR-07200RL
46 1 R86 RES., 127Ω, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1270TRF PANASONIC, ERJ3EKF1270V VISHAY, CRCW0603127RFKEA
47 5 R90, R126, R173, R193, R236 RES., 0.005Ω, 1%, 1/2W, 2010, SENSE, AEC-Q200 VISHAY, WSL20105L000FEA
49 2 R108, R118 RES., 0.01Ω, 1%, 1/2W, 2010, SENSE, AEC-Q200 VISHAY, WSL2010R0100FEA
50 1 R109 RES., 100k OHMS, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1003TRF PANASONIC, ERJ3EKF1003V VISHAY, CRCW0603100KFKEA
51 1 R110 RES., 5k, 10%, 1/2W, THT 3/8 SQ, 1-TURN, TOP ADJ., TRIMPOT
52 2 R111, R115 RES., 20k, 1%, 1/10W, 0603 PANASONIC, ERJ3EKF2002V VISHAY, CRCW060320K0FKEA YAGEO, RC0603FR-0720KL
53 1 R112 RES., 100Ω, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1000TRF PANASONIC, ERJ3EKF1000V VISHAY, CRCW0603100RFKEA
54 1 R113 RES., 1.4k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1401TRF PANASONIC, ERJ3EKF1401V VISHAY, CRCW06031K40FKEA
55 1 R114 RES., 154k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1543TRF PANASONIC, ERJ3EKF1543V VISHAY, CRCW0603154KFKEA
18
DEMO MANUAL DC2638A-C
Rev. 0
PARTS LISTITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
56 1 R117 RES., 2Ω, 1%, 1/10W, 0603, AEC-Q200 VISHAY, CRCW06032R00FKEA
57 1 R123 RES., 1MΩ, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1004TRF PANASONIC, ERJ3EKF1004V VISHAY, CRCW06031M00FKEA
58 1 R139 RES., 1.65k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1651TRF PANASONIC, ERJ3EKF1651V VISHAY, CRCW06031K65FKEA
59 4 R153, R154, R155, R156 RES., 0Ω, 3/4W, 2010, AEC-Q200 NIC, NRC50ZOTRF PANASONIC, ERJ12ZY0R00U VISHAY, CRCW20100000Z0EF
60 1 R181 RES., 2.43k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F2431TRF PANASONIC, ERJ3EKF2431V VISHAY, CRCW06032K43FKEA
61 1 R198 RES., 3.24k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F3241TRF PANASONIC, ERJ3EKF3241V VISHAY, CRCW06033K24FKEA
62 1 R203 RES., 681k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F6813TRF PANASONIC, ERJ3EKF6813V VISHAY, CRCW0603681KFKEA
63 1 R204 RES., 3.3Ω, 1%, 1/10W, 0603, AEC-Q200 VISHAY, CRCW06033R30FKEA
64 1 R205 RES., 82.5Ω, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F82R5TRF PANASONIC, ERJ3EKF82R5V VISHAY, CRCW060382R5FKEA
65 2 R213, R223 RES., 4.99k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F4991TRF PANASONIC, ERJ3EKF4991V VISHAY, CRCW06034K99FKEA
66 1 R220 RES., 15.8k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1582TRF PANASONIC, ERJ3EKF1582V VISHAY, CRCW060315K8FKEA
67 1 R227 RES., 4.7k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F4701TRF PANASONIC, ERJ3EKF4701V VISHAY, CRCW06034K70FKEA
68 1 R241 RES., 4.22k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F4221TRF PANASONIC, ERJ3EKF4221V VISHAY, CRCW06034K22FKEA
69
70 4 U1, U2, U3, U4 IC, DUAL 25A POP PSM MODULE, BGA-144 ANALOG DEVICES, LTM4678EY#PBF
71 1 U6 IC, 700mA μPOWER LDO WITH SHUTDOWN, SO-8
ANALOG DEVICES, LT1129CS8#PBF ANALOG DEVICES, LT1129CS8#TRPBF
72 1 U7 IC, TIMERBLOX: VOLTAGE-CTRL. PWM, TSOT23-6 ANALOG DEVICES, LTC6992CS6-1#PBF ANALOG DEVICES, LTC6992CS6-1#TRMPBF ANALOG DEVICES, LTC6992CS6-1#TRPBF
73 1 U8 IC, SINGLE R TO R IN/OUT OP AMP, TSOT23-5, 100V/μs, 85MHz
ANALOG DEVICES, LT1803IS5#PBF ANALOG DEVICES, LT1803IS5#TRMPBF ANALOG DEVICES, LT1803IS5#TRPBF
74 1 U9 IC, MEMORY, EEPROM, 2Kb (256x8), TSSOP-8, 400kHz MICROCHIP, 24LC025-I/ST MICROCHIP, 24LC025T-I/ST
19
DEMO MANUAL DC2638A-C
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
PARTS LISTITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Additional Demo Board Circuit Components
1 0 C16, C17, C29, C31, C32, C33, C34, C35, C36, C37, C38, C39, C40, C43, C45, C46, C47, C48, C50, C51, C52, C53, C74, C76, C77, C78, C79
CAP., OPTION, 0603
2 0 CIN18,CIN19,CIN20,CIN21COUT82,COUT83,COUT86,COUT89,COUT90,COUT91
CAP., OPTION, 1210
3 0 D4, D5 DIODE, OPTION, SOD-323
4 0 R8, R27, R28, R29, R30, R31, R104, R105, R130, R131, R132, R133, R134, R135, R140, R141, R142, R143, R144, R158, R159, R160, R166, R174, R182, R183, R184, R188, R189, R190, R192, R194, R199, R200, R201, R206, R207, R208, R212, R214, R216, R218, R219, R221, R228, R231, R232, R233, R235, R237, R242, R243, R244
RES., OPTION, 0603
5 0 R217 RES., OPTION, 1206
6 0 R102, R103 RES., OPTION, 2512
7 0 U5 IC., OPTION, BGA-144
8 0 PCA ASSY DWG, DC2638A
Hardware: For Demo Board Only
1 27 E1, E2, E3, E4, E5, E6, E7, E8, E9, E10, E11, E12, E13, E14, E15, E16, E17, E20, E21, E22, E23, E24, E25, E26, E27, E28, E29
TEST POINT, TURRET, 0.064, MTG. HOLE MILL-MAX, 2308-2-00-80-00-00-07-0
2 2 JP1, JP2 CONN., HDR, MALE, 1×3, 2mm, VERT, STR, THT WURTH ELEKTRONIK, 62000311121
3 8 J5, J7, J8, J9, J10, J13, J19, J20 RING, LUG, CRIMP, #10, NON-INSULATED, SOLDERLESS TERMINALS
KEYSTONE, 8205
4 16 J5, J7, J8, J9, J10, J13, J19, J20 NUT, HEX, STEEL, ZINC PLATE, 10-32 KEYSTONE, 4705
5 8 J5, J7, J8, J9, J10, J13, J19, J20 WASHER, FLAT, STEEL, ZINC PLATE, OD: 0.436 [11.1] KEYSTONE, 4703
6 8 J5, J7, J8, J9, J10, J13, J19, J20 STUD, FASTENER, #10-32 PENNENGINEERING, KFH-032-10ET
7 1 J12 CONN., HDR, FEMALE, 2×7, 2mm, R/A THT SULLINS CONNECTOR SOLUTIONS, NPPN072FJFN-RC
8 2 J14, J15 CONN., RF, BNC, RCPT JACK, 5-PIN, STR, THT, 50 OHMS AMPHENOL RF, 112404
9 1 J16 CONN., SHROUDED HDR, MALE, 2×6, 2mm, VERT, STR, THT
FCI, 98414-G06-12ULF
10 1 J17 CONN., HDR, MALE, 2×7, 2mm, R/A THT MOLEX, 0877601416 MOLEX, 87760-1416
11 1 J18 CONN., SHROUDED HDR, MALE, 1×4, 2mm, VERT, STR, THT
HIROSE ELECTRIC, DF3A-4P-2DSA
12 1 LB1 LABEL SPEC, DEMO BOARD SERIAL NUMBER BRADY, THT-96-717-10
13 2 SW0, SW1 CONN., HDR., MALE, 1×3, 2mm, VERT, STR, THT, 10μ Au
SAMTEC, TMM-103-02-L-S
14 4 MH1, MH2, MH3, MH4 STANDOFF, NYLON, SNAP-ON, 0.50 WURTH ELEKTRONIK, 702935000
15 2 XJP1, XJP2 CONN., SHUNT, FEMALE, 2-POS, 2mm WURTH ELEKTRONIK, 60800213421
16
17 1 PCB, DC2638A MAO BANG, 600-DC2638A
18 1 TOOL, STENCIL, 700-DC2638A ANALOG DEVICES, 830-DC2638A
20
DEMO MANUAL DC2638A-C
Rev. 0
ANALOG DEVICES, INC. 2020
11/20www.analog.com
ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.
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