A4982 Datasheet, PDF (15/19 Pages) Allegro MicroSystems – DMOS Microstepping Driver with Translator and Overcurrent Protection

A4982
DMOS Microstepping Driver with Translator
and Overcurrent Protection
STEP
100
96
88
83
77
71
63
56
47
38
29
Phase 1
20
I_OUT1A
10
Direction = H
0
(%)
–10
Slow
–20
–29
–38
–47
–56
–63
–71
–77
–83
–88
–96
–100
100
96
88
83
77
71
63
56
47
38
29
Phase 2
I_OUT2B
Direction = H
(%)
20
Slow
10
Mixed
0
–10
–20
–29
–38
–47
–56
–63
–71
–77
–83
–88
–96
–100
Mixed*
Mixed
Slow
Mixed*
Slow
Mixed
*With ROSC pin tied to GND
DIR= H
Mixed
Slow
Figure 13. Decay Modes for Sixteenth-Step Increments
Allegro MicroSystems, Inc.
15
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com