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Allegro MicroSystems - DMOS Dual Full Bridge PWM Motor Driver

Numéro de référence A3995
Description DMOS Dual Full Bridge PWM Motor Driver
Fabricant Allegro MicroSystems 
Logo Allegro MicroSystems 





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A3995 fiche technique
A3995
DMOS Dual Full Bridge PWM Motor Driver
Features and Benefits
▪ 36 V output rating
▪ 2.4 A dc motor driver
▪ Synchronous rectification
▪ Internal undervoltage lockout (UVLO)
▪ Thermal shutdown circuitry
▪ Crossover-current protection
▪ Very thin profile QFN package
Package: 36 pin QFN
0.90 mm nominal height (suffix EV)
Description
The A3995 is designed to drive two dc motors at currents up to
2.4 A. Capable of drive voltages up to 36 V, theA3995 includes
two independent fixed off-time PWM current regulators that
operate in either fast or slow decay mode, as determined by
the MODE input. Internal synchronous rectification control
circuitry is provided to improve power dissipation during
PWM operation.
Protection features include: thermal shutdown with hysteresis,
undervoltage lockout (UVLO) and crossover current protection.
Special power-up sequencing is not required.
The A3995 is supplied in a 36 pin QFN package (suffix EV)
with exposed power tab for enhanced thermal performance. It
has a 6 mm × 6 mm footprint, with a nominal overall package
height of 0.90 mm, and is lead (Pb) free, with 100% matte tin
leadframe plating.
Approximate scale 1:1
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Typical Application Diagram
Microcontroller or
Controller Logic
A3995DS
CP1
VDD
CP2
VCP
VBB VBB
OUT1A
OUT1A
MODE1
PHASE1
ENABLE1
VREF1
MODE2
PHASE2
ENABLE2
VREF2
A3995
OUT1B
OUT1B
SENSE1
SENSE1
OUT2A
OUT2A
OUT2B
OUT2B
SENSE2
SENSE2

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