UNISONIC TECHNOLOGIES CO., UA1538
4-CH MOTOR DRIVER FOR PORTABLE CD PLAYERS
DESCRIPTION
The UTC UA1538 contains a 4ch H ...
UNISONIC TECHNOLOGIES CO., UA1538
4-CH MOTOR DRIVER FOR PORTABLE CD PLAYERS
DESCRIPTION
The UTC UA1538 contains a 4ch H bridge driver and DC-DC converter control circuit on one chip, and was developed for use in portable CD players.
LINEAR INTEGRATED CIRCUIT
FEATURES
*Built-in 4ch H bridge driver, and PWM control of load drive voltage is made possible by external components. *DC-DC converter control circuit on chip. *With reset output inversion output pin. *Empty detection level can be switched between rechargeable battery and dry battery. *Constant current charging; current value can be varied using external resistor. *Built-in power
transistor for charging. *Built-in independent thermal shutdown circuit. www.DataSheet4U.com
QFP-44-0.8
*Pb-free plating product number: UA1538L
ORDERING INFORMATION Ordering Number Normal Lead Free Plating UA1538-QM1-T UA1538L-QM1-T Package QFP-44-0.8 Packing Tube
www.unisonic.com.tw Copyright © 2005 Unisonic Technologies Co.,
1
QW-R109-023,B
UA1538
PIN CONFIGURATION
RCHG OUT1R OUT1F OUT2R OUT2F 33 32 31 30 29 POW GND 28 27 26
LINEAR INTEGRATED CIRCUIT
OUT3F OUT3R OUT4F OUT4R BRAKE1 25 24 23
AMUTE 34
22
IN1
EMP 35 HVc c PSW CL K
21
MUTE2
36
20
IN2
37
19
MUTE34
38
18
IN4
START 39
UTC UA1538
17
IN3
OFF 40
16
Vref
CHGVcc 41
15 VSYS2 OP + OPOUT
SEL 42
14
PREGND 43
13
PWMFIL
44
12
VSYS1
1 BSEN
2 BATT
3
4
5 SW
6 EO
7 EI
8 SPRT
9 CT
10 N.C.
11 OP-
RESET DEAD
PIN DESCRIPTION
PIN NO. PIN NAME INPUT/...
