KA3021D データシートの表示（PDF） - Fairchild Semiconductor

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KA3021D

4-Channel Motor Driver

Fairchild Semiconductor 

KA3021D

• Rotational direction control

The forward and reverse rotational direction is controlled by FWD (pin 16) and REV (pin 15) inputs.

Conditions are as follows.

Input

Output

FWD

REV

DO2+

DO2−

State

H

H

Vr

Vr

Brake

H

L

H

L

Forward

L

H

L

H

Reverse

L

L

Vr

Vr

Brake

• Motor speed control

- The motor speed is proportional to the differential voltage between the pin12 (DO2+) and the pin13 (DO2−).

- By applying the voltage to the pin19 of CTL, the motor speed can be controlled and it is linearly proportional to the

applied control voltage.

- Motor torque is maximum when pin 19 is open.

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