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AM8931 - 3-Phase Sensor-less Fan Motor Driver

Datasheet Summary

Description

PIN No Pin Name Function PIN No Pin Name Function 1 CSOFT Soft start time setting terminal 8 2 F/R Forward and Reverse control terminal 9 3 VREG Regulator voltage output terminal 10 4 VCC Power supply terminal 11 5 COM Motor center tap voltage input terminal 12 6 U U phase output

Features

  • s 1) Operation voltage 3.3 to 15V 2) Direct PWM speed control 3) Built-in FG & RD 4) Soft start function 5) Forward and Reverse control 6) Lock detection/Automatic restart function.
  • Absolute Maximum Ratings (Ta = 25℃) 7) Over current limiter 8) Over-voltage protection 9) Thermal shutdown protection 10) Soft switching technique to reduce acoustic noise Parameter Symbol Limits Unit Supply voltage VREG strength voltage Output current VCC 16 V VREG 6 V Io 1000 mA FG & RD output.

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Datasheet preview – AM8931

Datasheet Details

Part number AM8931
Manufacturer AMtek
File Size 340.28 KB
Description 3-Phase Sensor-less Fan Motor Driver
Datasheet download datasheet AM8931 Datasheet
Additional preview pages of the AM8931 datasheet.

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Full PDF Text Transcription

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AM8931 Motor Driver ICs 3-Phase Sensor-less Fan Motor Driver AM8931 The AM8931 is a 3-Phase sensor-less DC fan motor driver IC. It senses the BEMF (Back Electro-Motive Force) of the motor in rotation and provides corresponding commutation current to the motor. Rotation speed can be controlled by PWM input signal. The drivers include Lock Detection, Thermal Shutdown, and Over-current limiter. Maximum output current is 1000mA.  Features 1) Operation voltage 3.
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