TA2125AF
2002-02-12
1
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
4 channel BTL linear drivers
High output power: V
out
= 5.1 Vp-p (V
CC
= 8 V, R
L
= 8 )
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
Block Diagram
Weight:
g (typ.)
Preliminary
24
6
7
12
13
1
2
RL5
36
V
R
35 34 33 32 31 30
Control
Logic
3
STBY
STBY
RIN
FIN
4ch
Driver
STB
IN3
IN4
REG
STB
29
27
28
FIN
V
CC
26
25
REG OUT
N.C.
23
22 21
3
3
3
3
20 19
4
VCIN
IN1
5
N.C.
N.C.
3
3
3
3
15 16 17 18
IN2
N.C. N.C.
11
14
8
9
FIN
10
GND
Iref
TSD
RL4
RL3
RL2
RL1
TA2125AF
2002-02-12
2
Terminal Explanation
No. Symbol
Function
1 OUT5A
Output
terminal
H-bridge
2 V
M
Supply voltage terminal for Logic
H-bridge
3 OUT5B
Output
terminal
H-bridge
4 V
CIN
Input reference voltage
4ch BTL
5
IN1
Input for ch1
4ch BTL
6 N.C.
Open
7 N.C.
Open
8
N.C.
8, 9, 10, 27, 28, 29 are connected to PW GND (FIN)
9
N.C.
8, 9, 10, 27, 28, 29 are connected to PW GND (FIN)
10
N.C.
8, 9, 10, 27, 28, 29 are connected to PW GND (FIN)
11
IN2
Input for ch2
4ch BTL
12 N.C.
Open
13 N.C.
Open
14 V
CC1
Supply voltage terminal for ch1/ch2
4ch BTL
15
OUT2M
Inverted output for ch2
4ch BTL
16
OUT2P
Non-inverted output for ch2
4ch BTL
17
OUT1M
Inverted output for ch1
4ch BTL
18
OUT1P
Non-inverted output for ch1
4ch BTL
19
OUT3P
Non-inverted output for ch3
4ch BTL
20
OUT3M
Inverted output for ch3
4ch BTL
21
OUT4P
Non-inverted output for ch4
4ch BTL
22
OUT4M
Inverted output for ch4
4ch BTL
23 V
CC2
Supply voltage terminal for ch3/ch4
4ch BTL
24 N.C.
Open
25
REG
Connection with BASE of PNP Tr
Regulator
26
REG OUT Output for regulator (5 V)
Regulator
27
N.C.
8, 9, 10, 27, 28, 29 are connected to PW GND (FIN)
28
N.C.
8, 9, 10, 27, 28, 29 are connected to PW GND (FIN)
29
N.C.
8, 9, 10, 27, 28, 29 are connected to PW GND (FIN)
30
REG STBY Standby control for regulator
Regulator
31
IN4
Input for ch4
4ch BTL
32
IN3
Input for ch3
4ch BTL
33
STBY
Standby control for 4ch BTL
4ch BTL
34 FIN
Logic
control
input
H-bridge
35 RIN
Logic
control
input
H-bridge
36
VR
Supply voltage terminal for motor driver
H-bridge
TA2125AF
2002-02-12
3
Precaution Use
(4ch BTL)
Input stage
Minimum input DC voltage range for buffer is 0.2 V
Driver stage
Each channel driver consists of BTL configuration linear amplifier.
Voltage gain is fixed: Gv = 15.2dB
VCIN terminal
VCIN is reference voltage terminal for input signal
GND
Pin 8~10 and Pin 27~29 are connected to FIN through inner lead frame.
Each FIN are not connected each other also.
The heat of power dissipation is transferred to PCB, through PW-GND Pin. PW GND is connected to substrate of
Pellet to connected copper foil area as large as possible.
V
CC1
/V
CC2
Pin 14 and pin 23 are not connected through AL layer on chip.
(H-Bridge)
VR/VM terminal
VR terminal is control for H-brige dynamic range. I36 = 30 mA (Brake Mode)
VM terminal is V
CC
terminal for H-Bridge.
STBY/REG STBY
STBY is standby control terminal for 4ch BTL.
REG STBY is standby control terminal for regulator.
Maximum Ratings
(Ta
=
=
=
=
25C)
Characteristics Symbol
Rating
Unit
Supply voltage
V
CC
12 V
Power dissipation
P
D
1.7
W
Operating temperature
T
opr
-
35~85
C
Storage temperature
T
stg
-
55~150 C
TA2125AF
2002-02-12
4
Electrical Characteristics
(Unless otherwise specified, V
CC
=
=
=
=
8 V, R
L
=
=
=
=
8
W
W
W
W
, VBIAS
=
=
=
=
2.1 V, f
=
=
=
=
1 kHz, Ta
=
=
=
=
25C)
Characteristics Symbol
Test
Circuit
Test Condition
Min
Typ.
Max
Unit
Operating supply voltage
V
CC
1, 2
5 8 9 V
Quiescent current
I
ccq
V
IN
=
VBIAS, R
L
=
OPEN
(With out H-SW)
27 37 60 mA
4ch BTL Driver
Characteristics Symbol
Test
Circuit
Test Condition
Min
Typ.
Max
Unit
Output offset voltage
V
OS
R
g
=
0
-
50 10 50 mV
Maximum output voltage
V
OM
V
IN
=
4 V/GND
4.5
5.1
V
Voltage gain
Gv
V
IN
=
VBIAS
200
mV
14.0 15.2 16.4
dB
V
STB (on)
0.5 V
Stand-by 1 control voltage
V
STB (off)
3.0
V
Stand-by current
I
STB1
V
IN
=
VBIAS, R
L
=
OPEN
H-Bridge: Stand-by
5 V REG: Stand-by
1
m
A
Regulator Reference Amp
Characteristics Symbol
Test
Circuit
Test Condition
Min
Typ.
Max
Unit
Output voltage
V
reg
I
o
=
200 mA
Tr. 2SA1203Y
4.6 5 5.2 V
V
reg (on)
2.5
V
CC
V
Regulator control voltage
V
reg (off)
GND
1.5 V
H-Bridge
Characteristics Symbol
Test
Circuit
Test Condition
Min
Typ.
Max
Unit
Output saturation voltage
V
CE
I
o
=
200 mA
1.3 1.4 V
Stand-by current
I
STB2
4ch BTL: Stand-by
5 V REG: Stand-by
1
m
A
V
HB (on)
2.5
V
CC
V
Control voltage
V
HB (off)
GND
0.7 V
H-Bridge Control Logic/V
R
Current
(36pin)
Operation Mode
Fin
Rin
Out5A
Out5B
V
R
Current
Unit
Forward H
L
L
H
19.5
mA
Revers L
H
H
L
19.5
mA
Brake H
H
L
L
30
mA
Stand-by L
L
Open
Open
1
m
A
TA2125AF
2002-02-12
5
Test Circuit
24
6
7
12
13
1
2
RL5
36 35 34 33 32 31 30
Control
Logic
3
STBY
STBY
29
27
28
FIN
26
25
100
m
F
N.C.
23
22 21
RL4
3
3
3
3
20 19
RL3
4
5
N.C.
N.C.
3
3
3
3
RL2
RL1
15 16 17 18
N.C. N.C.
11
14
8
9
FIN
10
GND
0.
1
m
F
0.
1
m
F
47
m
F
Iref
TSD
TA2125AF
2002-02-12
6
Package Dimensions
Weight:
g (typ.)
TA2125AF
2002-02-12
7
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000707EBF
RESTRICTIONS ON PRODUCT USE
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