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3953 Datasheet(PDF) 2 Page - Allegro MicroSystems

Part # 3953
Description  FULL-BRIDGE PWM MOTOR DRIVER
PDF  15 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

3953 Datasheet(HTML) 2 Page - Allegro MicroSystems

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3953
FULL-BRIDGE
PWM MOTOR DRIVER
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
2
X = Irrelevant
FUNCTIONAL BLOCK DIAGRAM
VBB
RC
VCC
LOGIC
SUPPLY
9
PHASE
UVLO
& TSD
R S
Dwg. FP-036-2A
MODE
REF
ENABLE
SENSE
BRAKE
GROUND
Q
R
S
PWM LATCH
VCC
+ –
BLANKING
SLEEP &
STANDBY MODES
VTH
R T
C T
1
2
3
6
7
8
10
11
14
15
4
GROUND
12
16
5
13
TRUTH TABLE
BRAKE
ENABLE
PHASE
MODE
OUTA
OUTB
DESCRIPTION
H
H
X
H
Off
Off
Sleep Mode
H
H
X
L
Off
Off
Standby
H
L
H
H
H
L
Forward, Fast Current-Decay Mode
H
L
H
L
H
L
Forward, Slow Current-Decay Mode
H
L
L
H
L
H
Reverse, Fast Current-Decay Mode
H
L
L
L
L
H
Reverse, Slow Current-Decay Mode
L
X
X
H
L
L
Brake, Fast Current-Decay Mode
L
X
X
L
L
L
Brake, No Current Control
Copyright © 1995, 2000
, 2005 Allegro MicroSystems, Inc.



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