A3989
Bipolar Stepper and High Current DC Motor Driver
Logic Timing Diagram, DC Driver
ENB
PH
MODE
VBB
OUTA
0V
VBB
OUTB
0V
IOUT
0A
A
1
2
VBB
15
OutA
3
24
OutB
3
4
5
OutA
A Charge Pump and VREG Power-up Delay (z200 µs)
6
7
8
9
VBB
6
7
OutB
8
9
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com