A4923: 3-Phase Sinusoidal Motor Controller

This device is no longer in production. The device should not be purchased for new design applications. Samples are no longer available. Date of status change: January 20, 2016.

Designed to control three-phase brushless DC motors, the A4923 is capable of high-current gate drive for an all N-channel power MOSFET 3-phase bridge.

Sinusoidal current control is employed via output PWM, to minimize vibration, noise, and torque ripple.

Internal circuit protection includes thermal shutdown with hysteresis, over-current, and dead-time protection. Special power up sequencing is not required.

The A4923 is supplied in a 32 terminal 5×5×0.9mm QFN package (suffix ET) with exposed pad for enhanced thermal dissipation. This small footprint package is lead (Pb) free with 100% matte tin leadframe plating, and it is also available with optional sidewall plating.


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

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  • Features and BenefitsFeatures and Benefits
  • PackagingPackaging
  • Technical DocsTechnical Docs
  • NewsNews
  • Sinusoidal Drive Current
  • Hall Element Inputs
  • PWM Current Limiting
  • Dead-time Protection
  • FGO (Tach) Output
  • Internal UVLO
  • Thermal Shutdown Circuitry

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Product Image Functional Block Diagram Typical Application

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
APEK4923GET-01-WO DEMO BOARD -20°C to 85°C No -- Discontinued Contact your
local sales rep
Check Stock
A4923GETTR-R 32-lead QFN -40°C to 105°C Yes View Data Discontinued Contact your
local sales rep
Check Stock
A4923GETTR-T 32-lead QFN -40°C to 105°C Yes View Data Discontinued Contact your
local sales rep
Check Stock

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