A3989 View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
Manufacturer
A3989 Datasheet PDF : 12 Pages
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A3989
100.0
66.7
33.3
Phase 1
(%)
0
–33.3
–66.7
–100.0
Bipolar Stepper and High Current DC Motor Driver
100.0
66.7
33.3
Phase 2
(%)
0
–33.3
–66.7
–100.0
Figure 5. Decay Modes for Quarter-Step Increments
Step Sequencing Settings
Full
1/2
1/4
Phase 1
(%ITripMax)
I0x
1
1
0
H
2
33
L
1
2
3
66*/100
H
4
100
L
3
5
100
L
6
100
L
2
4
7
66*/100
H
8
33
L
5
9
0
H
10
33
L
3
6
11
66*/100
H
12
100
L
7
13
100
L
14
100
L
4
8
15
66*/100
H
16
33
L
* Denotes modified step mode
I1x
PHASE
Phase 2
(%ITripMax)
I0x
H
x
100
L
H
1
100
L
L*/H
1
66*/100
H
L
1
33
L
L
1
0
H
L
1
33
L
L*/H
1
66*/100
H
H
1
100
L
H
x
100
L
H
0
100
L
L*/H
0
66*/100
H
L
0
33
L
L
0
0
H
L
0
33
L
L*/H
0
66*/100
H
H
0
100
L
I1x PHASE
L
1
L
1
L*/H
1
H
1
H
X
H
0
L*/H
0
L
0
L
0
L
0
L*/H
0
H
0
H
X
H
1
L*/H
1
L
1
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
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