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3971 データシートの表示(PDF) - Allegro MicroSystems
部品番号
コンポーネント説明
メーカー
3971
DUAL DMOS FULL-BRIDGE DRIVER
Allegro MicroSystems
3971 Datasheet PDF : 8 Pages
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3971
DUAL DMOS
FULL-BRIDGE DRIVER
LOGIC
SUPPLY
V
DD
24
S
10
3
S
11
10
PWM
1
11
S
20
22
S
21
15
PWM
2
23
LGND
2
FUNCTIONAL BLOCK DIAGRAM
0.22
µ
F/100 V
VOLTAGE
REFERENCE
V
REF
LOW SIDE SUPPLY
CP2
13
CP1
12
CHARGE PUMP
UVLO &
THERMAL
SHUTDOWN
DMOS H-BRIDGE
V
CP
V
CP
14
V
BB2
20
0.22
µ
F
50 V
OUT
2A
21
OUT
2B
16
BRIDGE 1
CONTROL
LOGIC
BRIDGE 2
CONTROL
LOGIC
GATE
DRIVE
DMOS H-BRIDGE
SENSE
2
17
R
S
, C
S
(OPTIONAL)
5
V
BB1
OUT
1A
4
OUT
1B
9
LOAD
SUPPLY
67
GROUND
18 19
SENSE
1
8
R
S
,
C
S
(OPTIONAL)
Dwg. FP-050
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 2000, Allegro MicroSystems, Inc.
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