Brushless DC Drivers

Three-Phase Brushless DC Motor Pre-Driver

A4938

These parts are no longer in production The device should not be purchased for new design applications. Samples are no longer available. The A4938 is a 3-phase BLDC motor pre-driver for N-channel MOSFETs, featuring Hall-element inputs, a commutation sequencer, and fixed off-time PWM current control. It includes locked-rotor detection, synchronous rectification, and protection against thermal shutdown, undervoltage, and dead time.

Product Details

Top Features

  • Drives 6 N-channel MOSFETs
  • Synchronous rectification for low power dissipation
  • Internal UVLO and thermal shutdown circuitry
  • Hall element inputs
  • PWM current limiting
  • Dead time protection
  • FG outputs
  • Standby mode
  • Lock detect protection
  • Overvoltage protection

Part Number Specifications and Availability

Design Tools