BA6285FP 데이터 시트보기 (PDF) - ROHM Semiconductor

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BA6285FP

Reversible motor driver

ROHM Semiconductor 

Motor driver ICs

BA6285FS / BA6285FP

FCircuit operation

(1) Input section

The four output modes are controlled by two logic inputs.

Current flows from OUT1 to OUT2 when FIN is HIGH and

RIN is LOW, and from OUT2 to OUT1 when RIN is HIGH

and FIN is LOW (refer to the truth table). The input circuit

can be operated by a logic circuit with a current capacity

of 120 X 170µA.

(2) Output section

Current flows from OUT1 to OUT2 during forward rota-

tion, and from OUT2 to OUT1 during reverse rotation.

The output voltages VOH and VOL are given by :

VOH [V]=VREF – VCE (sat) (PNP) – VBE (NPN)

VOL [V]=VCE (sat) (NPN)

VCE and VBE are functions of the output current (see elec-

trical characteristic curves). The output current can be

set with the VREF pin.

(3) Power saving circuit

All circuits are turned OFF when the FIN and RIN input pins

are both LOW or the POWER SAVE pin is HIGH. This cir-

cuit saves power during standby mode by leaving the

outputs OPEN.

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