A3988 Просмотр технического описания (PDF) - Allegro MicroSystems
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A3988 Datasheet PDF : 13 Pages
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A3988
Quad DMOS Full Bridge PWM Motor Driver
Package EV
I12 28
I11 29
GND 30
VCP 31
CP1 32
CP2 33
I01 34
I02 35
I03 36
Pin-out Diagrams
Package JP
I13 37
I12 38
18 PHASE1
I11 39
17 PHASE2
GND 40
16 GND
15 VREF4
NC 41
PAD
14 VREF3
Packages are not to scale VCP 42
13 VREF2
CP1 43
12 VREF1
11 VDD
10 PHASE3
CP2 44
I01 45
I02 46
I03 47
I04 48
PAD
24 I14
23 NC
22 PHASE1
21 PHASE2
20 GND
19 VREF4
18 VREF3
17 VREF2
16 VREF1
15 VDD
14 PHASE3
13 PHASE4
Terminal List Table
Number
EV
JP
2
3
3
4
4
5
5
6
6
8
7
9
8
10
9
13
10
14
11
15
12
16
13
17
14
18
15
19
16
20
17
21
18
22
19
24
20
27
21
28
22
29
23
31
24
32
25
33
26
34
27
37
28
38
29
39
30
40
31
42
32
43
33
44
34
45
35
46
36
47
1
48
1, 2, 7, 11,
–
12, 23, 25,
26, 30, 35,
36, 41
–
–
Pin Name
OUT1A
SENSE1
OUT1B
VBB1
OUT2B
SENSE2
OUT2A
PHASE4
PHASE3
VDD
VREF1
VREF2
VREF3
VREF4
GND
PHASE2
PHASE1
I14
OUT4A
SENSE4
OUT4B
VBB2
OUT3B
SENSE3
OUT3A
I13
I12
I11
GND
VCP
CP1
CP2
I01
I02
I03
I04
Pin Description
DMOS Full-Bridge 1 Output A
Sense Resistor Terminal for Bridge 1
DMOS Full-Bridge 1 Output B
Load Supply Voltage
DMOS Full-Bridge 2 Output B
Sense Resistor Terminal for Bridge 2
DMOS Full-Bridge 2 Output A
Control Input
Control Input
Logic Supply Voltage
Analog Input
Analog Input
Analog Input
Analog Input
Ground
Control Input
Control Input
Control Input
DMOS Full-Bridge 4 Output A
Sense Resistor Terminal for Bridge 4
DMOS Full-Bridge 4 Output B
Load Supply Voltage
DMOS Full-Bridge 3 Output B
Sense Resistor Terminal for Bridge 3
DMOS Full-Bridge 3 Output A
Control Input
Control Input
Control Input
Ground
Reservoir Capacitor Terminal
Charge Pump Capacitor Terminal
Charge Pump Capacitor Terminal
Control Input
Control Input
Control Input
Control Input
NC
No Connect
PAD
Exposed pad for enhanced thermal perfor-
mance. Should be soldered to the PCB.
Allegro MicroSystems, Inc.
11
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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