A5957: Full-Bridge PWM Gate Driver

Designed for pulse-width-modulated (PWM) control of DC motors, the A5957 is capable of 50 V operation and provides gate drive for an all n-channel external MOSFET bridge.

Input terminals are provided for use in controlling the speed and direction of a DC motor with externally applied PWM control signals. Internal synchronous rectification control circuitry is provided to lower power dissipation during PWM operation.

Internal circuit protection includes VDS protection, thermal shutdown with hysteresis, undervoltage monitoring of VBB, and crossover-current protection.

The A5957 is supplied in a low-profile, 4×4 mm, 20-contact QFN package (suffix “ES”) with exposed thermal pad.

DATASHEETS
SAMPLE & BUY

Astrorep Inc. (Allegro and Sanken Semiconductors, Sanken Power Supplies)
141 John Street, Suite 300
Babylon, NY 11702
Phone: (631)422-2500
Fax: (631)422-2504
Web: www.astrorepinc.com
Email: donna.tweedy@astrorepinc.com

If this is not your local representative, find your local sales rep here.

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  • Features and BenefitsFeatures and Benefits
  • PackagingPackaging
  • Technical DocsTechnical Docs
  • NewsNews
  • PHASE/ENABLE/SLEEPn control logic
  • Overcurrent indication
  • Adjustable off-time and blank-time
  • Adjustable current limit
  • Adjustable gate drive
  • Synchronous rectification
  • Internal UVLO
  • Crossover-current protection
  • MOSFET VDS protection
  • Voltage output proportional to load current
Package

Click the image to view larger
Product Image Functional Block Diagram

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
APEK5957ES-01-T DEMO BOARD -40°C to 85°C No -- Contact your
local sales rep
Check Stock
A5957GESTR-T 20-lead QFN -40°C to 105°C Yes View Data Contact your
local sales rep
Check Stock

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