A3986SLDTR View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
'A3986SLDTR' PDF : 16 Pages View PDF
A3986
Dual Full-Bridge MOSFET Driver
with Microstepping Translator
+5 V
VDD
Bandgap
REF
VREF
STEP
DIR
MS1
MS2
PFD1
PFD2
ENABLE
RESET
SR
Translator
OSC
ROSC
Protection
UVLO
TSD
Functional Block Diagram
VBB
Regulator
VREG
DAC
PWM Latch
Blanking
Mixed Decay
Phase 1
Control Logic
Phase 1
Phase 2
Control Logic
Phase 2
PWM Latch
Blanking
Mixed Decay
DAC
VREF
VMOTOR
VREG
CREG
Phase 1A
High-Side
Drive
VREG
Low-Side
Drive
C1A
CBOOT1A
GH1A
S1A
RGH1A
GL1A
LSS1
RGL1A
P
Bridge1
RGH1B
RGL1B
Phase 1B
Low-Side
Drive
SENSE1
GL1B
S1B
RSENSE1
P
High-Side
Drive
Phase 2A
High-Side
Drive
VREG
Low-Side
Drive
GH1B
CBOOT1B
C1B
C2A
VMOTOR
Bridge2
CBOOT2A
GH2A
S2A
RGH2A
RGH2B
GL2A
LSS2
RGL2A
RGL2B
Phase 2B
Low-Side
Drive
SENSE2
GL2B
S2B
RSENSE2
P
High-Side
Drive
GH2B
CBOOT2B
C2B
GND
Allegro MicroSystems, Inc.
3
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
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