KA3031 View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

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KA3031

6-Channel Motor Drive IC

Fairchild Semiconductor 

KA3031

6. TRAY, CHANGE MOTOR DRIVE PART

out 1

M

out 2

24 26

25 27

D

D

CTL1, 2

12 15

LEVEL SHIFT

M.S.C

S.W

IN

FWD

13 16

IN

REV

14 17

• Rotational direction control

The forward and reverse rotational direction is controlled by FWD (pin 13, 16) and REV (pin 14, 17) input conditions are as

follows.

FWD

H

H

L

L

INPUT

REV

H

L

H

L

OUT 1

Vr

H

L

Vr

OUTPUT

OUT 2

Vr

L

H

Vr

State

Brake

Forward

Reverse

Brake

• where Vr is (Vcc - Vbe) / 2 = 3.65V (at Vcc=8V)

• where Out1 pins are pins 24 and 26, and out2 pins aer pins 25 and 27

• Motor speed control

- The almost maximum torque is obtained when it is used with the pins 12 and 15 (CTL1, 2) open.

- If the torque of the motor is too low, then the applied voltage at pins 12 and 15 (CTL1, 2) are 0[V].

- When motor speed controlled, the applied voltage of the pins 12 and 15 (CTL1, 2) is between 0 and 4V.

Also, if the speed control is constant, the applied voltage of the pins 12 and 15 (CTL1, 2) is between 4 and

5V.

- This IC's applied maximum voltage is 6V when VCC is 8V.

- You must not use the applied CTL1, 2 voltage above 5.8V when VCC is 8V, and 3V when VCC is 5V.

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