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