A3968SLBTR(2008) データシートの表示（PDF） - Allegro MicroSystems
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A3968SLBTR Datasheet PDF : 8 Pages
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A3968
Dual Full-Bridge PWM Motor Driver with Brake
FUNCTIONAL BLOCK DIAGRAM
(One Half of Circuit Shown)
INPUTA
V CC
+
V BB
UVLO
& TSD
INPUTB
GROUND
PWM LATCH
R
Q
S
BLANKING
GATE
CURRENT-SENSE
COMPARATOR
+
–
TO OTHER
BRIDGE
SENSE
TO OTHER
BRIDGE
OSC
÷4
RS
RC
TO OTHER
BRIDGE
CT
RT
Dwg. FP-036-4
TRUTH TABLE
INPUTA
L
L
H
H
INPUTB
L
H
L
H
OUTA
L
L
H
Z
OUTB
L
H
L
Z
Description
Brake mode
“Forward”
“Reverse”
Disable
Z = High impedance
Allegro MicroSystems, Inc.
3
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Copyright © 1998, 2003 Allegro MicroSystems, Inc.
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