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3964 Datasheet(PDF) 2 Page - Allegro MicroSystems

Part No. 3964
Description  DUAL FULL-BRIDGE PWM MOTOR DRIVER
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Maker  ALLEGRO [Allegro MicroSystems]
Homepage  http://www.allegromicro.com
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 2 page
background image
3964
DUAL FULL-BRIDGE
PWM MOTOR DRIVER
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
A3964SB
1
2
3
4
5
6
7
8
9
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
θ
2
θ
1
V
CC
1
VBB
2
GROUND
GROUND
GROUND
GROUND
PHASE 2
V REF(OUT)
2
RC
2B
OUT
SENSE 2
2A
OUT
LOGIC
SUPPLY
Dwg. PP-005-2
NO
CONNECT.
NO
CONNECT.
ENABLE 2
1
RC
V
REF(IN)
PHASE 1
1A
OUT
SENSE 1
1B
OUT
LOAD
SUPPLY
NO
CONNECT.
NO
CONNECT.
ENABLE 1
NC
NC
NC
NC
50
75
100
125
150
5
1
0
TEMPERATURE IN
°C
4
3
2
25
Dwg. GP-049-4
R
= 6.0
°C/W
θJT
SUFFIX 'B', R
= 40
°C/W
θJA
SUFFIX 'LB', R
= 60
°C/W
θJA
2.5 V
REFERENCE
14
5
2
R S
19
R S
VREF(IN)
VCC
ENABLE1
ENABLE2
PHASE 1
PHASE 2
VBB
1
+
ONE SHOT
SOURCE
DISABLE
+
SOURCE
DISABLE
2
ONE SHOT
UVLO
& TSD
8
10
9
3
1
4
18
20
7
12
11
13
17
R T
R T
C T
C T
Dwg. FP-033-1
6 15 16
R A
R B
FUNCTIONAL BLOCK DIAGRAM
(A3964SLB pinning shown)
Copyright © 1997 Allegro MicroSystems, Inc.




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