MB3863PF Fujitsu Microelectronics, Inc., MB3863PF Datasheet - Page 5

• Manufacturer Part Number: MB3863PF
• Description: Bidirectional Motor Driver
• Manufacturer: Fujitsu Microelectronics, Inc.

1. Forward and Reverse
2. Brake
3. Stand-by
* : Input mode:1: +2.4 V Min.
Mode
OPERATIONS
Switching control mode A or B pairs Q2 and Q3, or Q1 and Q4, respectively, while reversing the supply current
to the motor for each switching. When Q2 and Q3 are in use, B-OUT and A-OUT are High level and Low level,
respectively. In this case, current flows B-OUT
the table below.
When Q1 and Q4 are in use, current flows in the reverse direction to the above flow, causing reverse motor
operation.
Control mode C operates Q2 and Q4 while stopping Q1 and Q3.
Since A-OUT and B-OUT are held at Low level, both poles of the motor are short-circuited and the motor is
stopped.
Control mode D turns Q1 to Q4 OFF and the motor has no current flow.
In this mode, the power supply current is less than 100 A.
C
D
A
B
Input mode*
A=IN
1
0
1
0
0: +0.4 V Max.
B=IN
0
1
1
0
Operation state of output transistor
OFF
OFF
OFF
ON
Q1
OFF
OFF
ON
ON
Q2
OFF
OFF
OFF
ON
Q3
motor
OFF
OFF
ON
ON
Q4
A-OUT, causing forward operation as described in
State of output pin
A-OUT
—
H
L
L
B-OUT
—
H
L
L
Output operation mode
Forward (Reverse)
Reverse (Forward)
Brake
Open (High impedance)
MB3863
5