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3952 Datasheet(PDF) 2 Page - Allegro MicroSystems

Part # 3952
Description  FULL-BRIDGE PWM MOTOR DRIVER
PDF  16 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

3952 Datasheet(HTML) 2 Page - Allegro MicroSystems

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3952
FULL-BRIDGE
PWM MOTOR DRIVER
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
RC
VCC
LOGIC
SUPPLY
PHASE
EMITTERS
UVLO
& TSD
R S
Dwg. FP-036
MODE
REF
ENABLE
SENSE
BRAKE
9R
R
GROUND
Q
R
S
1.5 V
PWM LATCH
VCC
+ –
BLANKING
SLEEP &
STANDBY MODES
VTH
'EB' ONLY
'B', 'LB', & 'W'
PACKAGES
R T
C T
FUNCTIONAL BLOCK DIAGRAM
TRUTH TABLE
BRAKE
ENABLE PHASE
MODE
OUT
A
OUT
B
DESCRIPTION
H
H
X
H
Z
Z
Sleep Mode
H
H
X
L
Z
Z
Standby, Note 1
H
L
H
H
H
L
Forward,
Fast-Decay Mode
H
L
H
L
H
L
Forward,
Slow-Decay Mode
H
L
L
H
L
H
Reverse,
Fast-Decay Mode
H
L
L
L
L
H
Reverse,
Slow-Decay Mode
L
X
X
H
L
L
Brake,
Fast-Decay Mode
L
X
X
L
L
L
Brake, No Current
Control, Note 2
X = Irrelevant
Z = High Impedance (source and sink both OFF)
NOTES:
1. Includes active pull-offs for power outputs.
2. Includes internal default V
sense level for over-current protection.
50
75
100
125
150
10
6
4
2
0
TEMPERATURE IN
°C
8
25
Dwg. GP-007-1A
'W' TAB
'B' , 'EB', & 'LB' TAB
'W' AMBIENT
'B' & 'EB' AMBIENT
'LB' AMBIENT
Copyright © 1994 Allegro MicroSystems, Inc.



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