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A3988 Datasheet(PDF) 8 Page - Allegro MicroSystems

Part No. A3988
Description  Quad DMOS Full Bridge PWM Motor Driver
Download  13 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A3988 Datasheet(HTML) 8 Page - Allegro MicroSystems

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Quad DMOS Full Bridge PWM Motor Driver
A3988
8
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
0
100.0
66.7
33.3
–33.3
–100.0
–66.7
0
100.0
66.7
33.3
–33.3
–100.0
–66.7
(%)
Phase 1
(%)
Phase 2
Figure 5. Step Sequence for Quarter-Step Increments
Step Sequencing Settings
Full
1/2
1/4
Phase 1
(%ITripMax)
I0x
I1x
PHASE
Phase 2
(%ITripMax)
I0x
I1x
PHASE
11
0
H
H
x
100
LL
1
2
33
L
H
1
100
L
L
1
1
2
3
100/66*
L/H*
L
1
100/66*
L/H*
L
1
4
100
L
L
1
33
L
H
1
3
5
100
L
L
1
0
H
H
X
6
100
L
L
1
33
L
H
0
2
4
7
100/66*
L/H*
L
1
100/66*
L/H*
L
0
8
33
L
H
1
100
L
L
0
59
0
H
H
x
100
LL
0
10
33
L
H
0
100
L
L
0
3
6
11
100/66*
L/H*
L
0
100/66*
L/H*
L
0
12
100
L
L
0
33
L
H
0
7
13
100
L
L
0
0
H
H
X
14
100
L
L
0
33
L
H
1
4
8
15
100/66*
L/H*
L
0
100/66*
L/H*
L
1
16
33
L
H
0
100
L
L
1
* Denotes modified step mode


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