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A3951SW Datasheet(PDF) 2 Page - Allegro MicroSystems

Part # A3951SW
Description  FULL-BRIDGE PWM MOTOR DRIVER
PDF  12 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A3951SW Datasheet(HTML) 2 Page - Allegro MicroSystems

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3951
FULL-BRIDGE
PWM MOTOR DRIVER
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
2
RC
PHASE
UVLO
& TSD
R S
Dwg. FP-036-1
REF/
ENABLE
SENSE
BRAKE
9R
R
GROUND
Q
R
S
1.5 V
PWM LATCH
VCC
+ –
BLANKING
VTH
50
75
100
125
150
10
6
4
2
0
TEMPERATURE IN
°C
8
25
Dwg. GP-032A
SUFFIX 'B', R
= 43
°C/W
θJA
SUFFIX 'W', R
= 38
°C/W
θJA
SUFFIX 'W',
R
= 2.0
°C/W
θJT
SUFFIX 'B',
R
= 6.0
°C/W
θJT
TRUTH TABLE
BRAKE ENABLE PHASE
OUT
A
OUT
B
DESCRIPTION
H
H
X
Z
Z
Outputs Disabled
H
L
H
H
L
Forward
H
L
L
L
H
Reverse
L
X
X
L
L
Brake, See Note
X = Irrelevant
Z = High Impedance (source and sink both off)
NOTE: Includes internal default Vsense level for over-current protection.
Copyright © 1994, 2000 Allegro MicroSystems, Inc.
FUNCTIONAL BLOCK DIAGRAM



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