A3941 Allegro MicroSystems, Inc., A3941 Datasheet - Page 19

• Manufacturer Part Number: A3941
• Description: Automotive Full Bridge MOSFET Driver
• Manufacturer: Allegro MicroSystems, Inc.

A3941
Terminal List
Number
10
12
13
14
15
11
1
2
3
4
5
6
7
8
9
VDRAIN
VREG
VREG
Name
GHB
GLB
GHA
VBB
VBB
LSS
GLA
CP2
SB
CB
CA
SA
High-side common drain
Low-side common source
Low-side gate drive B
Load connection B
High-side gate drive B
Bootstrap capacitor B
Regulated 13 V
Regulated 13 V
Bootstrap capacitor A
High-side gate drive A
Load connection A
Low-side gate drive A
Main supply
Main supply
Pump capacitor
Description
VDRAIN
VREG
VREG
Automotive Full Bridge MOSFET Driver
GHB
GHA
GLB
GLA
VBB
VBB
LSS
CB
CA
SB
SA
10
11
12
13
14
1
2
3
4
5
6
7
8
9
Pin-out Diagram
Reg
Charge
Pump
Number
16
17
18
19
20
21
22
23
24
25
26
27
28
t
Reg
–
DEAD
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VDSTH
RDEAD
FF2
FF1
RESET
PWMH
PWML
SR
V5
PHASE
GND
GND
CP1
CP2
RDEAD
PHASE
RESET
VDSTH
PWMH
PWML
Name
GND
GND
CP1
PAD
FF1
FF2
SR
V5
Pump capacitor
Ground
Ground
Phase control input
5 V regulator
SR control input
Low-side PWM control input
High-side PWM control input
Reset input
Fault Flag 1 output
Fault Flag 2 output
Dead time setting input
V
Exposed pad for enhanced thermal
dissipation (underside)
DS
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
threshold level Input
Description
19