A3901 Datasheet, PDF (5/11 Pages) Allegro MicroSystems – Dual Full Bridge Low Voltage Motor Driver

A3901
Dual Full Bridge Low Voltage Motor Driver
Motor Operation Truth Table
INx¹
OUT1² OUT2 OUT3 OUT4
Stepper Motor
IN1 IN2 IN3 IN4
0
0
0
0
OFF OFF OFF OFF
1
0
1
0
H
L
H
L
0
0
1
0
OFF OFF
H
L
0
1
1
0
L
H
H
L
0
1
0
0
L
H
OFF OFF
0
1
0
1
L
H
L
H
0
0
0
1
OFF OFF
L
H
1
0
0
1
H
L
L
H
1
0
0
0
H
L
OFF OFF
DC Motor (Dual)
IN1 or IN3
IN2 or IN4
0
0
OFF OFF OFF OFF
1
0
H
L
H
L
0
1
L
H
L
H
1
1
L
L
L
L
DC Motor (Single, Paralleled)
IN1 and IN3
IN2 and IN4
0
0
OFF OFF OFF OFF
1
0
H
L
H
L
0
1
L
H
L
H
1
1
L
L
L
L
DC Motor (External PWM)
IN1 or IN3
IN2 or IN4
1
0
H
L
H
L
0
0
OFF OFF OFF OFF
0
1
L
H
L
H
0
0
OFF OFF OFF OFF
1
0
H
L
H
L
1
1
L
L
L
L
0
1
L
H
L
H
1
1
L
L
L
L
1_{0 = logic low, VINx< VIN(0)(max); 1 = logic high, VINx> VIN(1)(min)}
2_{H = voltage high, source driver on; L = voltage low, sink driver on}
Function
Full Stepping
Sleep Mode
Step 1
–
Step 2
–
Step 3
–
Step 4
–
Half-Stepping
Sleep Mode
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Step 8
Hi-Z (Sleep Mode)/Coast
Forward
Reverse
Brake
Hi-Z (Sleep Mode)/Coast
Forward
Reverse
Brake
Forward
Fast Decay
Reverse
Fast Decay
Forward
Slow Decay
Reverse
Slow Decay
Allegro MicroSystems, Inc.
5
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com