A3992SBT- Allegro MicroSystems, Inc., A3992SBT- Datasheet - Page 3

• Manufacturer Part Number: A3992SBT-
• Description: DMOS Dual Full-Bridge Microstepping PWM Motor Driver
• Manufacturer: Allegro MicroSystems, Inc.

A3992
To V DD
To V DD
STROBE
CLOCK
SLEEP
DATA
OSC
VDD
MUX
REF
To 2V
V
REF
Internal
Oscillator
OSC Select/
Divider
Serial Port
Buffer
6 Bit
Linear DAC
6 Bit
Linear DAC
UVLO and
Fault
Detect
Phase 1,2
Sync Rect Mode
Sync Rect Disable
Mode 1, 2
Blank
Mixed Decay
Blank
Mixed Decay
Programmable
PWM Timer
Fixed-Off
Programmable
PWM Timer
Fixed-Off
Control
Logic
2 V
Functional Block Diagram
Regulator
Bandgap
VREG
Drive
Gate
OCP
Microstepping PWM Motor Driver
V
CP
0.22 µF
DMOS Full Bridge 1
DMOS Full Bridge 2
CP2
Charge
Pump
DMOS Dual Full-Bridge
CP1
0.22 µF
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
VCP
VBB1
OUT1A
OUT1B
SENSE1
VBB2
OUT2A
OUT2B
SENSE2
0.22 µF
0.1 µF
>47 µF
3