A4945 and A4949: Three Phase Sensorless Sinusoidal Fan Driver

Description

The A4945 and A4949 three phase motor drivers incorporate sinusoidal drive to minimize audible noise and vibration for medium power fans.

These devices are available in both automotive and commercial grade.

Top Features

  • 180° sinusoidal drive - low audible noise and vibration
  • Motor position using Allegro's sensorless algorithm - eliminates external Hall sensors
  • AEC-Q100 Qualified - suitable for automotive applications

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check Stock
A4945GLJTR-T 8-lead SOIC -40°C to 105°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
A4945GLTR-T 8-lead SOIC -40°C to 105°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
A4949GLJTR-T 8-lead SOIC -40°C to 105°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
A4949GLTR-T 8-lead SOIC -40°C to 105°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
A4945KLJTR-T 8-lead SOIC -40°C to 125°C Yes View Data Last time buy Contact your
local sales rep
Check
Distributor Stock
A4949KLJTR-T 8-lead SOIC -40°C to 125°C Yes View Data Last time buy Contact your
local sales rep
Check
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.

Packaging

Packages