A3966SLB View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
'A3966SLB' PDF : 12 Pages View PDF
3966
DUAL FULL-BRIDGE
PWM MOTOR DRIVER
FUNCTIONAL BLOCK DIAGRAM
PHASE 1
LOGIC
SUPPLY
V CC
V BB
LOAD
SUPPLY
UVLO
& TSD
ENABLE 1
RT
BLANKING
PWM LATCH 1 GATE 1
R
Q
S
CURRENT-SENSE
COMPARATOR 1
+
–
RC
CT
OSC
SENSE 1
R1S
SENSE 2
R 2S
CURRENT-SENSE
COMPARATOR 2
+
–
BLANKING
GATE 2
PWM LATCH 2
R
Q
S
÷4
REFERENCE
PHASE2
UVLO
& TSD
ENABLE 2
GROUND
Dwg. FP-036-6
A3966SA
SENSE 1 1
OUT1B 2
LOAD
SUPPLY 3
REFERENCE 4 VREF
V BB
RC 5 RC
LOGIC
SUPPLY
6V
CC
OUT 2B 7
SENSE 2 8
16 ENABLE 1
15 PHASE 1
14 OUT1A
13 GROUND
12 GROUND
11 OUT2A
10 PHASE 2
9 ENABLE 2
Dwg. PP-066-2
TRUTH TABLE
PHASE
X
H
L
ENABLE
H
L
L
OUTA
Off
H
L
OUTB
Off
L
H
X = Irrelevant
115 Northeast Cutoff, Box 15036
2
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1998, 2000 Allegro MicroSystems, Inc.
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