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TA2125AF

Preliminary

TOSHIBA Bipolar Liner Integrated Circuit

Silicon Monolithic

TA2125AF

Power Driver IC for CD Player

TA2125AF is power driver IC developed for CD players.

This IC have built-in 4 channel BTL power amplifiers and 1

channel H-Bridge driver.

Which drives focus-coil and tracking coil for 3-beam pick-up head,

disc motor, feed motor and loading motor.

Featuers

路

4 channel BTL linear drivers

High output power: V

out

= 5.1 Vp-p (V

CC

= 8 V, R

L

= 8

鈩?

Stand-by switch for BTL drivers

1 channel H-Bridge: V

CE (H)

+ V

CE (L)

= 1.3 V (V

R

= V

M

= 8 V,

I

O

= 200 mA)

Logic control (forward, revers, brake, stand-by)

Punch through current restriction diode for H-bridge

5 V regulator reference amp (with external output Tr.)

Thermal shut down protection

Operating supply voltage range: V

CC

= 5.0-9.0 V

Weight:

g (typ.)

路

路

路

路

路

Block Diagram

4ch

Driver

REG

RIN FIN STB IN3 IN4 STB

V

CC

RL4

REG OUT

36

35

34

33

STBY

32

31

30

STBY

29

28

FIN

27

26

25

N.C.

24

23

麓

3

22

21

20

19

RL3

V

R

Control

Logic

麓

3



麓

3



麓

3



Iref

TSD

麓

3



10

11

12

13

14

15

麓

3



麓

3



麓

3



16

17

18

1

2

RL5

3

4

5

6

7

8

9

FIN

GND

N.C. N.C.

VCIN IN1

N.C. N.C.

IN2

RL2

RL1

1

2002-02-12

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