a4935 Allegro MicroSystems, Inc., a4935 Datasheet - Page 3

• Manufacturer Part Number: a4935
• Description: Automotive 3-phase Mosfet Driver
• Manufacturer: Allegro MicroSystems, Inc.

A4935
COAST
RDEAD
RESET
PWMH
PWML
CCEN
ALO
BLO
CLO
ESF
VDD
FF1
FF2
CHI
AHI
BHI
VDSTH
Supply
Logic
Diagnostics and Protection
VBB
Control
Logic
Short to Supply
Short to Gnd
UVLO, OTF
Short Load
CP1
Regulator
Charge
Pump
AGND
C
P
Functional Block Diagram
Bootstrap
for B & C)
CP2
(repeated
Charge
Phase A
Monitor
Pump
CSOUT
Automotive 3-Phase MOSFET Driver
High Side
Low Side
Drive
Drive
VREG
+
–
VREG
VDRAIN
CA
GHA
SA
GLA
CSP
CSN
LSS
R
GATE
C
R
C
BOOTA
REG
GATE
Battery +
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
VBAT
Phase C
Phase B
3