ICs for CD/CD-ROM Player

OverviewThe AN8819NFB is a 4ch. driver employing the low

consumption power type H-bridge method which canoperate with low voltage. It is suitable particularly for aportable CD player.

Features• Wide output D-range is available regardless of the ref-

erence voltage on the system• Driver input/output gain setting enabled by an externalresistance

• For 2 channels, independent power on/off feature built-in. For other 2 channels, simultaneous on/off featureprovided.

• Thermal shut down circuit (with hysteresis) built-in• PWM control of the driver supply enabled by an exter-

nal circuit for low consumption power operation• Construction of DC-DC converter enabled by an exter-

nal circuit• Construction of ripple filter for D/A converter enabledby an external capacitor

• Construction of PWM control circuit of laser output byan external circuit for low consumption power operation

• Reset circuit with a mute and battery voltage detectioncircuit built-in for rational design of a set

ApplicationActuator for CD, motor drive

AN8819NFB4Ch. Linear Driver IC + DC-DC Converter Control for CD

Unit : mm

1 11

12

22

33 23

44

34

0.3

+ 0

.1–

0.05

0.8

10.0

±0.3

12.2

±0.4

12.2±0.4

10.0±0.3

(0.6)

0.1±

0.1

2.0±

0.3

0.9±0.1

0.9±

0.1

0.2

+ 0

.1–

0.05

44-lead QFP package (QFP044-P-1010)

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AN8819NFB ICs for CD/CD-ROM Player

Block Diagram

BT

LB

TL

BT

LB

TL

+–

+ –

+–

2625

2423

2930

3132

2827

635

7

43 44

1516

1718

1920

2122

3433

42

+–+ –

+ –

3637

3941

9

38 1 40 3

1312

115

48

2

POW

ER

OFF

+ –

+–

+–

14

10

PWM

+–

+–

+–

+–

+–

Max

.V

alue

Abs

olut

eV

alue

Rip

ple

Filte

r

DC

-DC

Con

v.

Switc

hing

Cir

cuit

Star

ter

exch

ange

Initi

al s

ettin

g

The

rmal

Shut

dow

n

Star

ter

Abs

olut

eV

alue

Abs

olut

eV

alue

Abs

olut

eV

alue

DR

VC

C

SVC

C

PGN

D

SGN

D

PVC

C

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ICs for CD/CD-ROM Player AN8819NFB

Pin DescriptionPin No. Pin Name

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

PVCC Supply Pin

DED Dead Time Input Pin

OUT DC-DC Converter Output Pin

FB Error Amp. Input Pin

IN Error Amp. Output Pin

DRGND Ground Pin

SGND Ground Pin

SPRO Short-Circuit Protection Input Pin

BSEL Empty Detection Level Changeover Pin

VSEN Empty Detection Input Pin

SVCC Power Pin

CRIP Capacitor Pin for Ripple Rejection

AVDD Ripple Filter Ouput Pin

DRVCC Supply Pin

VREF 1/2 VCC Input Pin

INFO Driver Input Pin

INTR Driver Input Pin

LDON Driver ON – OFF Control Pin

INSP Driver Input Pin

PC Driver ON – OFF Control Pin

INTV Driver Input Pin

TRVSTOP Driver ON – OFF Control Pin

Pin No. Pin Name

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

TR– Driver Output Pin

TR+ Driver Output Pin

FO – Driver Output Pin

FO + Driver Output Pin

PGND Ground Pin

PGND Ground Pin

SP + Driver Output Pin

SP – Driver Output Pin

TV+ Driver Output Pin

TV– Driver Output Pin

VC Driver Power Voltage Pin

TB PWM Circuit Output Pin

RESET Reset Output Pin

MRST Muting Reset Output Pin

EMP Empty Detection Output Pin

CLK External Synchronization Input Pin

START Start Oscillation Start Input Pin

POWER Power On/Off Input Pin

CT Triangular Wave Oscillation Pin

PWMG PWM Loop Gain Adjustment Pin

COMPO APC Comparator Output Pin

COMPI APC Comparator Input Pin

Absolute Maximum Ratings (Ta=25˚C)

PVCC

SVCC

DRVCC

V10max.

V33max.

ICC

PD

Topr

Tstg

Supply Voltage

VSEN Pin Maximum Applied Voltage

VC Pin Maximum Applied Voltage

Supply Current

Power Dissipation Note)

Operating Ambient Temperature

Storage Temperature

V

V

V

mA

mW

˚C

˚C

Parameter Symbol Rating Unit

15

6

6

15

9

880

–25 ~ + 75

–55 ~ + 125

Note) Unit

Recommended Operating Range (Ta=25˚C)

Parameter Symbol Range

Operating Supply Voltage Range

PVCC

SVCC

DRVCC

1.5V ~ 9V

2.7V ~ 5.5V

2.7V ~ 5.5V

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AN8819NFB ICs for CD/CD-ROM Player

Parameter Symbol Condition min. typ. max. Unit

Electrical Characteristics (Ta=25˚C±2˚C)

Driver Portion

VDMAX

IDMAX

G+

Gsp +

VOFF

VSPOFF

IDZ

ISpDZ

V

mA

kΩ

kΩ

mV

mV

µA

µA

2.0

1.8

1.8

4.5

3.0

5.1

2.0

43

87

SVCC No Load Supply Current

DRVCC No Load Supply Current

PVCC No Load Supply Current

PVCC Leak Current

I11Q

I14Q

I1Q

I1L

PVCC = 2.4V, SVCC = DRVCC

= 3.2V, VREF = 1.6V3.1

2.4

2.6

mA

mA

mA

µA

500

33

67

–50

–100

–1

–2

DRVCC

–1.2

53

107

50

100

1

2

Maximum Drive Voltage of Pins FO, TR, SP and TV

Ripple Rejection Ratio RR13 40 dB

PVCC = 4V,SVCC = DRVCC = 3.2V

PVCC = 4V,SVCC = DRVCC = 3.2V

PVCC = 4V,SVCC = DRVCC = 3.2V

PVCC = 4V,SVCC = DRVCC = 3.2V

PVCC = 4V,SVCC = DRVCC = 3.2V

PVCC = 4V,SVCC = DRVCC = 3.2V

PVCC = 4V,SVCC = DRVCC = 3.2V

DC-DC Converter Portion

%

%

%

V

V

kHz

kHz

74

80

45

1.5

0.3

83

65

PVCC = 2.4V, SVCC = DRVCC

= 3.2V, CT = 390pF/470kΩ,VIN = 0.8V

65

74

35

1.08

0.15

60

54

83

86

55

1.71

0.4

115

76

PVCC1 = 2.4V, SVCC = DRVCC

= 3.2V, VREF = 1.6V

PVCC1 = 2.4V, SVCC = DRVCC

= 3.2V, VREF = 1.6VPVCC = 9V, SVCC = DRVCC

= 0V, VERF = 0V

Maximum Drive Current

Focus/Tracking/Traverse Transmission Gain (+)

Spindle Transmission Gain (+)

Focus/Tracking/Traverse Output Offset Voltage

Spindle Output Offset Voltage

Focus/Tracking/Traverse Input Conversion Dead Zone

Spindle Input Conversion Dead ZonePVCC = 4V,SVCC = DRVCC = 3.2V

D2C

D2F

D2S

V20H

V20L

F41S

F41F

PVCC = 2.4V, SVCC = DRVCC

= 3.2V, CT = 390pF/470kΩ,VIN = 0.8V

PVCC = 2.4V, SVCC = DRVCC

= 3.2V, CT = 390pF/470kΩ,VIN = 0.8VPVCC = 2.4V, SVCC = 3.2VIOUT = –25mA, VCT = 0V, VFB = 0.7V

PVCC = 2.4V, SVCC = DRVCC

= 3.2V, IOUT = 15mA, VCT = 1V, VFB = 0.5V

PVCC = 3.2V, SVCC = 0VCT = 390pF/470kΩPVCC = 2.4V, SVCC = DRVCC

= 3.2V, CT = 390pF/470kΩ

PVCC = 2.4V, SVCC = DRVCC

= 3.2V, Input = 35mVrms/20kHz

Ripple Filter Portion

CLK Synchronization Output Pulse Maximum Duty

Self-Running Output Pulse Maximum Duty

Starting Output Pulse Maximum Duty

Self-Running Output Voltage (H)

Self-Running Output Voltage (L)

Starting Oscillation Frequency

Self-Running Oscillation Frequency

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ICs for CD/CD-ROM Player AN8819NFB

Pin DescriptionPin Description Equivalent CircuitPin No.

11

7

14

6

1

Symbol I/O

2728

2

3

SVCC

SGND

DRVCC

DRGND

PVCC

PGND

DED

OUT

I

I

I

I

I

I

O

Supply pin for control circuits other than of driver, not connected with DRVCC, PVCC

Ground pin for control circuits other than of driver

Supply pin for control circuit of driver, not connected with SVCC, PVCC

Ground pin for control circuit of driver

Supply pin supplying the current for output power transistor

Ground pin for output power transistor

Setting pin for dead time control input and soft start

Switching output pin

11

7

14

1

2

6

27

28

50kΩ

200Ω

15kΩ

25kΩ

SVCC

3

PVCC

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AN8819NFB ICs for CD/CD-ROM Player

Pin Description (Cont.)Pin Description Equivalent CircuitPin No.

4

5

Symbol I/O

8

40

13

12

FB

IN

SPRO

POWER

AVDD

CRIP

O

I

I

I

O

Error amp. output pin

Error amp. input pin

Short-circuit protection input pin

Switching output ON/OFF pin

Supply pin for D/A converter

External capacitor pin for ripple rejection

5

8

40

4

SVCC

SVCC26.9kΩ

13.1kΩ

16.4kΩ

22kΩ

20kΩ

79kΩ

62kΩ

32kΩ

13

12

SVCC

SVCC

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ICs for CD/CD-ROM Player AN8819NFB

Pin Description (Cont.) Pin Description Equivalent CircuitPin No.

15

Symbol I/O

Power cut input pin for Drivers FO, TR. Driver output at L = GND

16

17

19

21

18

20

22

23

24

25

26

30

29

32

31

33

VREF

INFO

INTR

INSP

INTV

LDON

PC

TR–

TR+

FO –

FO +

SP –

SP +

TV–

TV+

VC

TRV STOP

I

I

I

I

I

I

I

I

O

O

O

O

O

O

O

O

O

VREF input pin

Input pin for Driver FO

Input pin for Driver TR

Input pin for Driver SP

Input pin for Driver TV

Power cut input pin for Driver SP. Driver output at H = GND

Power cut input pin for Driver TV. Driver output at H = GND

15

DRVCC

DRVCC

DRVCC

100kΩ

1kΩ

1kΩ

40kΩ

80kΩ

DRVCC

86kΩ

86kΩ

16

17

or

18

20

33

22

or

19

or

21

or

24 26or

31or

or

29

23 25or

32or

or

30

VREF

– output pin of Driver TR

+ output pin of Driver TR

– output pin of Driver FO

+ output pin of Driver FO

– output pin of Driver SP

+ output pin of Driver SP

– output pin of Driver TV

+ output pin of Driver TV

Driver supply pin

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AN8819NFB ICs for CD/CD-ROM Player

Pin Description (Cont.)Pin Description Equivalent CircuitPin No.

9

Symbol I/O

Battery shortage detection output pin for battery voltage detection circuit

Reset output pin. Reset voltage = Output voltage × 90%

10

37

39

35

36

BSEL

VSEN

EMP

START

MRST

RESET

Pin switching the dry cell and charger battery for battery voltage detection circuit

Battery voltage detection input pin for battery voltage detection circuit

Muting reset output pin. Reset voltage = Output voltage × 90%

Start pin. OUT pin starts switching in start mode

9

PVCC

30kΩ

7.8kΩ

9.9kΩ

7kΩ

70kΩ

10

37

35

36

PVCC

39

PVCC

PVCC

200kΩ

100kΩ

PVCC

20kΩ

60kΩ

40kΩ

I

I

I

O

O

O

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ICs for CD/CD-ROM Player AN8819NFB

Pin Description (Cont.)Pin Description Equivalent CircuitPin No. Symbol I/O

Clock input pin, used to synchro-nize the triangular wave oscillation with clock.

38

41

34

42

43

44

CLK

CT

TB

PWMG

COMP0

COMP1

I

O

O

O

I

Triangular wave oscillation pin. Oscillation frequency determined by external R and C. Recommendable values : 470kΩ, 390pF

Transistor base pin for controlling the driver supply voltage PWM

Gain adjustment pin for controlling the driver supply voltage PWM

APC switching comparator output pin

APC switching comparator input pin

3850kΩ

20kΩ

50kΩ

160kΩ

41

34

PVCC

60kΩ

42

DRVCC

43

44

SVCC

1kΩ

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AN8819NFB ICs for CD/CD-ROM Player

Characteristic Curve

2,000

1,800

1,600

1,400

1,200

1,000

800

600

400

200

0

Ambient Temperature Ta (˚C)

Pow

er D

issi

patio

n P D

(m

W)

250 75 125

Glass epoxy board(50mm × 50mm × 0.8mm)Rthj– a = 70˚C/WPD =1786mW (25˚C)

15010050

1,786

880

Unit Rthj– a = 142˚C/WPD = 880mW (25˚C)

PD –Ta

Description for use• Driver Portion

Set the driver gain calculated by the equation shown below, except for SP driver. For SP driver, the gain must be set to the

calculated value + 6dB.

G = 43kΩ

1.0kΩ + R

The total channel driver supply is Pin33.

Set the driver supply as necessary, since the output amplitude increases with increase of the supply voltage. However, also

increase the voltage of DRVCC pin (Pin14) at the same time.

As protection functions, VREF detection and heat protection circuits are incorporated.

VREF detector sets the driver output to high impedance, when the voltage applied to VREF is 0.75V or less.

For the heat protective circuit, the set temperature for operation is approx. 150˚C and the release temperature is approx. 120˚C.

FO and TR drivers have the built-in function for making short-circuit between either loading end and GND by LDON (Pin18),

and for SP and TV drivers by PC (Pin20) and TRVSTOP (Pin22).

LDON : Output GND at L

PC : Output GND at H

TRVSTOP : Output GND at H

R : External input resistance

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ICs for CD/CD-ROM Player AN8819NFB

R2

R3

IC Inside

10

–

+

37

1.25V

EMP

VSEN’

R1

VSEN

–

+

4

11

5

SVCC

R1

R2 IN

R3

R4

1.11V

FB

• DC-DC Converter Portion3.4V regulator can be constructed by using external components. The output voltage can be made variable by using an external

resistance.

The short-circuit protective function stops switching of OUT pin (Pin3), unless the output of error amplifier (Pin4) reaches L

after H, within t = CSPRO × VTH/ISPRO (VTH = 1.1V ISPRO = 30µA). (It is recommended that an electrolytic capacitor of 4.7µF

around should be used for Pin3.)

The soft start function works by attaching a capacitor to Pin2 for GND. t = CDED × R (R = 60kΩ)

Also, MAX duty can be changed by attaching an external resistance to Pin2. The output voltage is determined as follows:

(Example)

Assuming R1 + R2 = 50kΩ

R1 × R3 +

R2 × R4R1 + R3 R2 + R4

SVCC = 1.1 × R2 × R4R2 + R4

Where

R3 = 26.9kΩR4 = 13.1kΩ

• Ripple Filter Portion for DA Converter (Ripple Filter of Low Saturation Voltage Type) Attach a capacitor for noise removal to CRIP pin for GND.

(A capacitor of 22µF around is recommended.) Output current : 10mA (typ.)

• Battery Voltage Detection CircuitThe voltage applied to VSEN pin (Pin10) and the constant voltage are compared for output to EMP pin (Pin37).

There is approx. 50mV of hysteresis from detection to reset to prevent the output chattering.

The detection threshold voltage can be made variable by an external resistance.

The threshold values with no external resistances at VSEN pin (Pin10) are as follows:

Detection : VSEN = 2.2V (typ.) BSEL (Pin9) = L

Reset : VSEN = 2.25V (typ.) BSEL (Pin9) = L

Detection : VSEN = 1.8V (typ.) BSEL (Pin9) = HiZ

Reset : VSEN = 1.85V (typ.) BSEL (Pin9) = HiZ

Use the following equation as reference to determine the detection threshold voltage:

Assuming that the voltage of VSEN (Pin10) at battery

shortage detection is VSEN’

VSEN’ = R1 + R2 + R3 × 1.25

R3

Where R1 : External Resistance

R2 : 8.0kΩR3 : 16.5kΩ (BSEL = HiZ)

R3 : 10.5kΩ (BSEL = L)

• RESET and MRST PortionsRESET (Pin35) is changed from L to H, and MRST pin is changed from H to L, with approx. 90% of the output voltage by a DC-

DC converter.

IC Inside

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Request for your special attention and precautions in using the technical information andsemiconductors described in this book

(1)If any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and regulations of the exporting country, especially, those with regard to security export control, must be observed.

(2)The technical information described in this book is intended only to show the main characteristics and application circuit examples of the products, and no license is granted under any intellectual property right or other right owned by our company or any other company. Therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any other company which may arise as a result of the use of technical information described in this book.

(3)The products described in this book are intended to be used for standard applications or general electronic equipment (such as office equipment, communications equipment, measuring instruments and household appliances). Consult our sales staff in advance for information on the following applications: Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support

systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the prod-ucts may directly jeopardize life or harm the human body. Any applications other than the standard applications intended.

(4)The products and product specifications described in this book are subject to change without notice for modification and/or im-provement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product Standards in advance to make sure that the latest specifications satisfy your requirements.

(5)When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions (operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any defect which may arise later in your equipment.

Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products.

(6)Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (ESD, EOS, thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. When using products for which damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages.

(7)This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of Matsushita Electric Industrial Co., Ltd.

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