390

Motor driver ICs

BA6209 / BA6209N

FCircuit operation

Input / output truth table

Forward / reverse control, forced stop, and rush current

(1)

Forward / reverse control circuit

rent flows from OUT2 to OUT1 (refer to the truth table).

(2)

Forced stop circuit

supply to the motor is shut down and a brake is applied

by absorbing the motor counter-electromotive force.

(3)

Rush current absorption circuit

When a high voltage (caused by such as a motor rever-

sal) is generated on OUT1 and OUT2, an internal

comparator detects the high voltage and turns on an in-

ternal circuit that absorbs rush currents.

(4)

Drive circuit

The forward direction of the motor connected between

OUT1 and OUT2 corresponds to the current flow from

OUT1 to OUT2, and the reverse direction corresponds to

the current flow from OUT2 to OUT1. The output voltage

diode (ZD) connected to pin 4.

the equation :

FPin descriptions