A5943: Three Phase Sinusoidal Fan Driver


The A5943 is a low noise, three phase motor driver with integrated power bridge suitable for driving small fans and blowers. Motor audible noise and vibration is reduced by driving the phases with sinusoidal PWM excitation. Motor current is controlled using PWM techniques to minimize the power dissipation.

Top Features

  • 180° sinusoidal drive - low audible noise and vibration
  • Motor position using external Hall sensors

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Part Composition /
RoHS Data
Comments Samples Check Stock
APEK5943GLP-01-T DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep
Distributor Stock
A5943GLPTR-T 16-lead TSSOP -40°C to 105°C Yes View Data Contact your
local sales rep
Distributor Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.



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