A3986SLD-T Allegro MicroSystems, Inc., A3986SLD-T Datasheet - Page 15

• Manufacturer Part Number: A3986SLD-T
• Description: DUAL H-BRIDGE MOSFET DRVR W/MICRO TRANS
• Manufacturer: Allegro MicroSystems, Inc.

A3986
Pin-out Diagram
Terminal List Table
Number
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
11
1
2
3
4
5
6
7
8
9
SENSE1
ENABLE
SENSE2
RESET
VREG
Name
GH2A
GH1A
GH1B
STEP
GH2B
GL2A
GL1A
GL1B
LSS1
PFD2
PFD1
LSS2
GL2B
GND
OSC
VBB
REF
VDD
MS1
MS2
C2A
C1A
C1B
S1B
S2B
C2B
S2A
S1A
DIR
NC
SR
NC
NC
SENSE1
ENABLE
VREG
GH2A
GH1A
GH1B
GL2A
GL1A
GL1B
LSS1
C2A
S2A
VBB
S1A
C1A
C1B
S1B
NC
SR
10
11
12
13
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
Phase 2 bootstrap capacitor drive A connection
Phase 2 high-side gate drive A
Phase 2 motor connection A
Phase 2 low-side gate drive A
No internal connection
Regulator decoupling capacitor connection
Motor supply voltage
Phase 1 low-side gate drive A
Phase 1 motor connection A
Phase 1 high-side gate drive A
Phase 1 bootstrap capacitor drive A connection
Phase 1 bootstrap capacitor drive B connection
Phase 1 high-side gate drive B
Phase 1 motor connection B
Phase 1 low-side gate drive B
Phase 1 low-side source connection
Phase 1 bridge current sense input
Synchronous rectification enable
Output enable
Ground
Reference voltage
Reset input
Oscillator input, ROSC resistor connection
No internal connection
Logic supply voltage
Step input
Percent Fast Decay input 2
Microstep Select input 1
Microstep Select input 2
Direction input
Percent Fast Decay input 1
Phase 2 bridge current sense input
Phase 2 low-side source connection
No internal connection
Phase 2 low-side gate drive B
Phase 2 motor connection B
Phase 2 high-side gate drive B
Phase 2 bootstrap capacitor drive B connection
Dual Full-Bridge MOSFET Driver
Control
Logic
Translator
with Microstepping Translator
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
C2B
GH2B
S2B
GL2B
NC
LSS2
SENSE2
PFD1
DIR
MS2
MS1
PFD2
STEP
VDD
NC
OSC
RESET
REF
GND
Description
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
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