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A4988 Datasheet(PDF) 16 Page - Allegro MicroSystems

Part # A4988
Description  DMOS Microstepping Driver with Translator and Overcurrent Protection
Download  19 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A4988 Datasheet(HTML) 16 Page - Allegro MicroSystems

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DMOS Microstepping Driver with Translator
and Overcurrent Protection
A4988
16
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
4988-DS
Figure 12. Decay Modes for Sixteenth-Step Increments
Mixed
Slow
Mixed*
Mixed*
Mixed
Slow
Mixed
Slow
Slow
Slow
100.00
95.69
88.19
83.15
–83.15
77.30
70.71
63.44
55.56
47.14
38.27
29.03
19.51
9.8
0.00
–100.00
–95.69
–88.19
–77.30
–70.71
–63.44
–55.56
–47.14
–38.27
–29.03
–19.51
–9.8
100.00
95.69
88.19
83.15
–83.15
77.30
70.71
63.44
55.56
47.14
38.27
29.03
19.51
9.8
0.00
–100.00
–95.69
–88.19
–77.30
–70.71
–63.44
–55.56
–47.14
–38.27
–29.03
–19.51
–9.8
Phase 2
I
OUT2B
Direction = H
(%)
Phase 1
I
OUT1A
Direction = H
(%)
Mixed
*With ROSC pin tied to GND
STEP
DIR= H


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