441

Motor driver ICs

BA6287F

FCircuit operation

(1)

Input section

The four output modes are controlled by two logic inputs.

can be operated by a logic circuit with a current capacity

of 120

X 170µA.

Input / output truth table

(2)

Output section

Current flows from OUT1 to OUT2 during forward rota-

tion, and from OUT2 to OUT1 during reverse rotation.

trical characteristic curves). The output current can be

(3)

Power saving circuit

are both put to LOW level. This circuit saves power dur-

ing standby mode by leaving the outputs OPEN.

(4)

Thermal shutdown circuit

When the thermal shutdown circuit is activated at the

chip temperature of about 175

_C (typical), the outputs

are left OPEN. The temperature difference between the

activation and deactivation settings is about 15

_C. When

the thermal shutdown circuit is deactivated, the outputs

revert to the status determined by input mode.

FApplication example