MB3763H 데이터 시트보기 (PDF) - Fujitsu

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MB3763H

Bidirectional Motor Driver

Fujitsu 

MB3763H

s FUNCTIONAL DESCRIPTIONS

FORWARD/REVERSE MODE (MODE B & C)

In this mode, the transistor pairs Q2-Q3 and Q1-Q4 work altematively, changing the output current direction.

When the mode B is selected, Q2 and Q3 are active and Q1 and Q4 are inactive. Therefore A-OUT is at low

level and B-OUT is at high level, with the current flowing from B-OUT to A-OUT through the motor. On the other

hand, when the mode C is selected, the current flows in the reverse direction.

BRAKE/STOP MODE (MODE A)

When the mode A is selected, Q1 and Q3 are inactive and Q2 and Q4 are active. A-OUT and B-OUT are stuck

at low-level; terminal of motor are shorted and the motor is forced to stop.

STANDBY MODE (MODE D)

In this mode, all transistors are inactive and the current through the motor does not flow. When the power supply

voltage is applied to A-VCC and B-VCC, the supply current is still less than or equal to 0.1 mA.

s CONTROL MODE

Control Block Diagram

A-IN

B-IN

A-VCC

Q1

A-OUT

Q2

Control Logic

B-VCC

Q3

B-OUT

Q4

Mode

A

B

C

D

Notes: 1: ≥ 2.4 V

0: ≤ 0.4 V

6

Input mode

A-IN

B-IN

1

1

1

0

0

1

0

0

GND

Output mode

A-OUT

B-OUT

L

L

L

H

H

L

—

—

Operation

Short (Brake)

Forward

Reverse

Open (Standby)

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