a4982 Allegro MicroSystems, Inc., a4982 Datasheet - Page 17

• Manufacturer Part Number: a4982
• Description: Dmos Microstepping Driver With Translator And Overcurrent Protection
• Manufacturer: Allegro MicroSystems, Inc.

A4982
*The GND pins must be tied together externally by connecting to the PAD ground plane under the device.
Terminal List Table
SENSE1
SENSE2
¯ E ¯ ¯ N ¯ ¯ A ¯ ¯ B ¯ ¯ L ¯ ¯ E ¯
OUT1A
OUT1B
OUT2A
OUT2B
¯ S ¯ ¯ L ¯ ¯ E ¯ ¯ E ¯ ¯ P ¯
¯ R ¯ ¯ E ¯ ¯ S ¯ ¯ E ¯ ¯ T ¯
ROSC
VREG
Name
STEP
VBB1
VBB2
GND
MS1
MS2
VCP
VDD
CP1
CP2
REF
PAD
DIR
NC
ENABLE
OUT2B
VBB2
GND
CP1
CP2
NC
NC
1
2
3
4
5
6
7
8
23, 26, 28,
2, 4, 21,
ET Package
29, 31
6, 19
ET
20
11
12
27
24
30
18
13
14
25
32
15
17
22
16
10
7
8
5
1
3
9
–
1
Number
PAD
DMOS Microstepping Driver with Translator
13, 24
LP
14
23
18
15
19
22
12
17
20
16
21
10
11
1
2
5
6
–
7
8
9
3
4
–
24
23
22
21
20
19
18
17
OUT1B
NC
VBB1
NC
DIR
GND
REF
STEP
Pin-out Diagrams
Charge pump capacitor terminal
Charge pump capacitor terminal
Logic input
Logic input
Ground
Logic input
Logic input
No connection
DMOS Full Bridge 1 Output A
DMOS Full Bridge 1 Output B
DMOS Full Bridge 2 Output A
DMOS Full Bridge 2 Output B
G
Logic input
Timing set
Sense resistor terminal for Bridge 1
Sense resistor terminal for Bridge 2
Logic input
Logic input
Load supply
Load supply
Reservoir capacitor terminal
Logic supply
Regulator decoupling terminal
Exposed pad for enhanced thermal dissipation*
m
reference voltage input
2
and Overcurrent Protection
Description
RESET
SLEEP
ROSC
VREG
STEP
VCP
MS1
MS2
VDD
CP1
CP2
REF
LP Package
10
11
12
1
2
3
4
5
6
7
8
9
PAD
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
24
23
22
21
20
19
18
17
16
15
14
13
GND
ENABLE
OUT2B
VBB2
SENSE2
OUT2A
OUT1A
SENSE1
VBB1
OUT1B
DIR
GND
17