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BTL Driver IC for CD-ROM
BA5944FP
Description 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. Applications Slim CD-ROM, etc. Absolute Maximum Ratings(Ta=25 )
Parameter Supply voltage Power dissipation Operating temperature range Storage temperature range
*Derating:11.6mW/
Dimension (Units:mm)
HSOP25
Symbol VCC Pd Topr Tstg
.
Limits 13.5 1.45* -35 ~ +85 -55 ~ +150
Unit V W
for operation above Ta=25
Recommended Operating Conditions(Ta=25 )
Parameter VCC for Pre-block VCC for Power-block VCC for Regulator-block Symbol PreVCC PowVCC REGVCC Min. 4.5 4.5 4.5 Typ. -- -- -- Max. 13.2 Pre Vcc Pre Vcc Unit V V V
Electrical Characteristics (Unless otherwise noted, Pre/Pow/Reg, Vcc=5V, BIAS=1.65V, RL=8 )
Parameter Quiescent current Output offset voltage Output amplitude 1 Output amplitude 2 Gain (close circuit) Peak output current Output voltage Load regulation Line regulation Input offset voltage Common mode input voltage range Reset ON voltage Hysteresis bound 4.12 4.20 4.28 VRSTHY 60 40 90 This product is not designed for protection against radioactive rays. VRSTON V mV RESET IN=High >Low Vio VICM 4.0 0.0 -- -- 4.0 Vcc 1.6 mV V IoMax VREG V RL V Vcc 200 3.525 -- -- -- 3.60 20 3 -- 3.675 50 10 mA V mV mV IL=100mA IL=0~200mA Vcc=4.5~13.2V Voo VOM1 VOM2 Gvc 50.0 3.2 3.7 10.0 0.0 3.6 4.1 11.5 50.0 -- -- 13.0 mV V V dB Pre Vcc=12V, Pow Vcc=5V Vin=BIAS - 0.5V Symbol Icc Min. -- Typ. 10.0 Max. 15.0 Unit mA Conditions No load
Application circuit
RESET OUT Driver Reg2 MUTE ON/OFF PRE GND BIAS IN1 IN2
RESET
Pow GND
25
PRE Vcc
24
23
22
21
Reg2 ON/OFF
20
19
18
17
14K
16
15
14
T.S.D
14K
14K
Driver MUTE
14K
+ Level Shift
Level Shift + Comparator1 Comparator2
RESET IN
POW Vcc
1
2
3
IN1+
4
IN2+
5
6
7
8
REG Vcc
9
10
11
12
13
Comp.1 IN1-- OUT
IN2-- Comp.2 OUT
Reg2
Reg 1
Vcc

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