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MM1538 Datasheet(PDF) 1 Page - Unisonic Technologies

Part No. MM1538
Description  4-CH MOTOR DRIVER FOR PORTABLE CD PLAYERS
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Maker  UTC [Unisonic Technologies]
Homepage  http://www.utc-ic.com
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MM1538 Datasheet(HTML) 1 Page - Unisonic Technologies

 
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UTCMM1538
LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R109-009,A
4-CH MOTOR DRIVER FOR
PORTABLE CD PLAYERS
DESCRIPTION
The UTC MM1538 contains a 4ch H bridge driver
and DC-DC converter control circuit on one chip, and
was developed for use in portable CD players.
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.
APPLICATIONS
*Portable CD radio cassette recorders
QFP-44-0.8
PIN CONFIGURATION
UTC MM1538
RCHG OUT1R OUT1F OUT2R OUT2F
POW
GND
OUT3F OUT3R OUT4F OUT4R BRAKE1
AMUTE
EMP
HVcc
PSW
CLK
START
OFF
CHGVcc
SEL
PREGND
PWMFIL
BSEN BATT RESET DEAD
SW
EO
EI
SPRT
CT
N.C.
OP-
VSYS1
OPOUT
OP+
VSYS2
Vref
IN3
IN4
MUTE34
IN2
MUTE2
IN1
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