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A3985SLDTR-T Datasheet(PDF) 3 Page - Allegro MicroSystems

Part # A3985SLDTR-T
Description  Digitally Programmable Dual Full-Bridge MOSFET Driver
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A3985SLDTR-T Datasheet(HTML) 3 Page - Allegro MicroSystems

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Digitally Programmable
Dual Full-Bridge MOSFET Driver
A3985
3
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Functional Block Diagram
High-Side
Drive
Low-Side
Drive
Low-Side
Drive
High-Side
Drive
Programmable
PWM Timer
Blanking
Mixed Decay
Programmable
PWM Timer
Blanking
Mixed Decay
Protection
UVLO
TSD
Phase 1
Control Logic
Phase 2
Control Logic
P
P
High-Side
Drive
Low-Side
Drive
Low-Side
Drive
High-Side
Drive
P
6-bit
DAC
6-bit
DAC
Bandgap
Regulator
Serial Port
VDD
VBB
GND
WC
SCK
OSC
ENABLE
REF
VREF
VREF
SDI
SDO
STR
VREG
Phase 1A
Phase 1B
Phase 2A
Phase 2B
CREG
+5 V
C1A
VREG
CBOOT1A
C1B
CBOOT1B
Bridge1
Bridge2
RGH1A
GH1A
GL1A
GL1B
GH1B
S1A
S1B
LSS1
SENSE1
RGL1A
RGH1B
V
MOTOR
RGL1B
RSENSE1
C2A
VREG
Phase 1
Phase 2
CBOOT2A
C2B
CBOOT2B
RGH2A
GH2A
GL2A
GL2B
GH2B
S2A
S2B
LSS2
SENSE2
RGL2A
RGH2B
V
MOTOR
RGL2B
RSENSE2
Programmable Divider
Oscillator


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