Rainbow-electronics BA6239AN User Manual download pdf

490

Motor driver ICs

2-channel reversible motor driver

BA6238A / BA6238AN / BA6239A / BA6239AN

The BA6238A, BA6238AN, BA6239A, and BA6239AN are monolithic ICs incorporating two reversible-motor drivers that

are suitable for driving small DC brush motors.

The logic input section for controlling each motor can be easily connected with CMOSs and other control logic outputs.

The torque during loading can be varied by controlling the voltage supplied to the motor with pin 8 of the output section.

With a limited number of external parts, each driver has a function of two reversible-motor drivers.

Applications

VCRs and audio tape recorders

Features

1) Two reversible-motor driver circuits are built in. (not

operable at the same time)

2) Limited number of external parts.

3) Interface with CMOS devices. (protective resistor re-

quired when the CMOS output is higher than 5V)

4) Built-in power transistor for motor driving.

5) Built-in thermal shutdown circuit. (the circuit brakes

the output when the chip temperature is increased

due to such an event as motor locking)

Block diagram

1 2 3 4 5 6 7 8

Summary of Contents

Page 1 - Motor driver ICs

490Motor driver ICs2-channel reversible motor driverBA6238A / BA6238AN / BA6239A / BA6239ANThe BA6238A, BA6238AN, BA6239A, and BA6239AN are monolithic

Page 2

491Motor driver ICs BA6238A / BA6238AN / BA6239A / BA6239ANFAbsolute maximum ratings (Ta = 25_C)BA6238A / BA6238ANBA6239A / BA6239ANFRecommended opera

Page 3 - BA6239A / BA6239AN

492Motor driver ICs BA6238A / BA6238AN / BA6239A / BA6239ANFElectrical characteristics (unless otherwise noted, Ta = 25_C and VCC = 12V)BA6238A / BA62

Page 4 - Input / output truth table

493Motor driver ICs BA6238A / BA6238AN / BA6239A / BA6239ANMeasurement circuitsApplication examplesInput / output truth table

Page 5

494Motor driver ICs BA6238A / BA6238AN / BA6239A / BA6239ANFCircuit operation(1) Input (pins 4, 5, and 6)These pins receive control logic signals. The

Page 6

495Motor driver ICs BA6238A / BA6238AN / BA6239A / BA6239ANOperation notes(1) Though the IC input pins can be directly connectedwith MOS output pins,

Page 7

496Motor driver ICs BA6238A / BA6238AN / BA6239A / BA6239ANElectrical characteristic curves

Page 8

497Motor driver ICs BA6238A / BA6238AN / BA6239A / BA6239ANExternal dimensions (Units: mm)

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Rainbow-electronics BA6239AN User Manual

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