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Motor driver ICs
General use electronic governor
BA6220
The BA6220 is a monolithic IC designed for controlling the speed of general-purpose DC motors.
The IC consists of a reference voltage generator, current multiplier, comparator, and start-up circuit. The speed of DC
motor is controlled by detecting the counter-electromotive force generated by the motor.
Various DC motors can be driven by changing the external constants. A large power dissipation is allowed by grounding
the pin connected with the IC substrate.
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Applications
Radio cassette tape recorders
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Features
1) Wide range of operating voltage. (3.5
X
16V)
2) Large starting torque at low supply voltage.
3) Large power dissipation allowable by using the PCB
as a heat sink.
4) Various DC motors can be driven by changing the ex-
ternal constants.
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Block diagram
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Absolute maximum ratings (Ta = 25
_
C)
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Recommended operating conditions (Ta = 25
_
C)