A3986SLD-T Allegro MicroSystems, Inc., A3986SLD-T Datasheet - Page 3

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

A3986
ROSC
+5 V
ENABLE
RESET
STEP
PFD1
PFD2
OSC
MS1
MS2
REF
DIR
SR
VDD
Translator
Protection
Bandgap
UVLO
TSD
V
REF
V
REF
Mixed Decay
Control Logic
Control Logic
Mixed Decay
DAC
PWM Latch
PWM Latch
DAC
Blanking
Phase 1
Phase 2
Blanking
VBB
Regulator
GND
V
REG
Functional Block Diagram
Phase 1
Phase 2
Dual Full-Bridge MOSFET Driver
High-Side
Drive
Low-Side
Drive
Low-Side
Drive
High-Side
Drive
High-Side
Drive
Low-Side
Drive
Low-Side
Drive
High-Side
Drive
V
V
Phase 1A
Phase 1B
Phase 2A
Phase 2B
REG
REG
with Microstepping Translator
C1A
GH1A
S1A
GL1A
LSS1
SENSE1
GL1B
S1B
GH1B
C1B
C2A
GH2A
S2A
GL2A
LSS2
SENSE2
GL2B
S2B
GH2B
C2B
VREG
CBOOT1A
CBOOT1B
CBOOT2A
CBOOT2B
CREG
RGH1A
RGL1A
RGH2A
RGL2A
V
V
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
MOTOR
MOTOR
RSENSE1
RSENSE2
Bridge1
Bridge2
RGH1B
RGL1B
RGH2B
RGL2B
P
P
P
3