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A3989 Datasheet(PDF) 3 Page - Allegro MicroSystems

Part No. A3989
Description  Bipolar Stepper and High Current DC Motor Driver
Download  12 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A3989 Datasheet(HTML) 3 Page - Allegro MicroSystems

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Bipolar Stepper and High Current DC Motor Driver
A3989
3
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
CHARGE PUMP
DMOS
Full Bridge 1
DMOS
Full Bridge 2
V
CP
To
V
BB2
PHASE1
I01
I11
SENSE1
OUT1B
OUT1A
SENSE2
OUT2B
OUT2A
VDD
OSC
SENSE3
OUT3B
OUT3B
SENSE3
OUT3A
OUT3A
DMOS
Full Bridge 3
Sense 2
Sense 3
PWM Latch
BLANKING
VREF2
GATE
DRIVE
V
CP
Sense1
Sense 2
PWM Latch
BLANKING
PWM Latch
BLANKING
3
GATE
DRIVE
PHASE2
3
VREF1
Sense 3
3
VREF3
I02
I12
PHASE3
ENABLE
MODE
VBB1
VBB1
0.1 µF
50 V
100 µF
50 V
0.22 µF
50 V
0.1 µF
50 V
Control Logic
Stepper Motor
Control Logic
DC Motor
R
S3
R
S2
R
S1
Functional Block Diagram


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