ROHM BA5944FP

BTL Driver IC for CD-ROM
BA5944FP
Description
Dimension (Units:mm)
The BA5944FP is a BTL driver IC (actuator operation)
developed for CD-ROMs. Two highly accurate 3.6V
regulators and a 4.2V reset circuit that acts as a
peripheral power supply are included, as well as two
general purpose comparators. An achievement in
space savings of the set and reducing components
has been realized by integrating regulators and drivers
into an actuator driver IC as one chip.
Features
1) 2-channel dynamic range actuator driver built-in
2) Highly accurate (+/ 2%) 3.6V regulator 2-channel
built-in (1-channel regulator can be controlled with
On/Off switch.)
3) Highly accurate (+/ 2%) 4.2V reset curcuit built-in
4) Includes two general purpose comparators.
HSOP25
Applications
Slim CD-ROM, etc.
Absolute Maximum Ratings(Ta=25 )
Parameter
Symbol
VCC
Limits
13.5
V
Power dissipation
Pd
1.45*
W
Operating temperature range
Topr
-35 ~ +85
Storage temperature range
Tstg
Supply voltage
*Derating:11.6mW/
Unit
-55 ~ +150
for operation above Ta=25
.
Recommended Operating Conditions(Ta=25 )
Parameter
Min.
VCC for Pre-block
Symbol
PreVCC
VCC for Power-block
PowVCC
4.5
VCC for Regulator-block
REGVCC
4.5
4.5
Typ.
—
Max.
13.2
Unit
—
—
Pre Vcc
V
Pre Vcc
V
V
Electrical Characteristics (Unless otherwise noted, Pre/Pow/Reg, Vcc=5V, BIAS=1.65V, RL=8 )
Parameter
Symbol
Min.
Typ.
Max.
Unit
Icc
—
10.0
15.0
mA
Quiescent current
Conditions
No load
<DRIVER>
Voo
50.0
0.0
50.0
mV
Output amplitude 1
VOM1
3.2
3.6
—
V
Output amplitude 2
VOM2
3.7
4.1
—
V
Gain (close circuit)
Gvc
10.0
11.5
13.0
dB
Peak output current
IoMax
200
—
—
mA
Output voltage
VREG
Output offset voltage
Pre Vcc=12V, Pow Vcc=5V
Vin=BIAS – 0.5V
<REGULATOR>
IL=100mA
3.525
3.60
3.675
V
Load regulation
V RL
—
IL=0~200mA
Line regulation
—
50
10
mV
V Vcc
20
3
mV
Vcc=4.5~13.2V
Vio
4.0
—
4.0
mV
VICM
0.0
—
Vcc 1.6
V
<COMPARATOR>
Input offset voltage
Common mode input voltage range
<RESET>
Reset ON voltage
VRSTON
4.12
4.20
4.28
VRSTHY
60
40
90
∗ This product is not designed for protection against radioactive rays.
V
Hysteresis bound
RESET IN=High >Low
mV
Application circuit
RESET
OUT
Driver
Reg2
MUTE ON/OFF
BIAS
PRE
GND
RESET
25
24
23
IN2
IN1
22
21
Pow
GND
20
19
18
17
16
15
14
14K
PRE
Vcc
14K
Reg2
ON/OFF
14K
14K
Driver
MUTE
T.S.D
+
Level Shift
Level Shift
+
Comparator2
Comparator1
RESET
IN
1
2
Comp.1 IN1—
OUT
3
4
IN1+
IN2+
5
6
POW
Vcc
7
IN2— Comp.2
OUT
8
9
10
11
12
REG
Vcc
Reg2
Reg
1
Vcc
13