_______________________________________________________________

ML1538

4ch Motor Driver for Portable CD Player

March, 2004 V1.0

Application Circuit

AMUTE

34

EMP

HV

PSW

CC

CLK

START

OFF

CHGV

SEL

CC

PWMFIL

PREGND

VSYS1

OPOUT

OP+

VSYS2

IN3

Vref

IN4

MUTE34

IN2

IN1

MUTE2

35

36

37

38

39

40

41

42

43

44

22

21

20

19

18

17

16

15

14

13

12

1

2

3

4

5

6

7

8

9

10

11

33

32

31

28

27

26

23

BTL

BTL

BTL

BTL

BRAKE1

MAXIMUM

DETECTION

POWER OFF

STARTER

OVER-VOLTAGE

-

+

V

/

I

-

+

V

/

I

-

+

V

/

I

-

+

V

/

I

TSD

+ +-

+ -

-

+

Pre-Driver Pow er Supply

Control Circuit

Pow er Supply

+ -

+ -

TRIANGLE-WAVE

+

-

+ -

TSD

M

Transverse

30

29

M

Spindle

Focus

27

26

Tracking

Filter

470p

0.1u

0.022u

8.2k

0.1u

DC-DC

Converter

Circuit

100u

+

VOUT

47u

+

VIN

470p

2200p

100k

0.1u

47

0.1u

47u

+

33u

100k

1.8k

Note : We shall not be liable for any trouble or damage caused by using this circuit.

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