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AM8933 - 3-Phase Sensor-less Fan Motor Driver

Datasheet Summary

Description

Fig.1 Block diagram PIN No 1 2 3 4 5 6 7 8 9 10 11 12 E-pad Pin Name FG FR COM VCC U PG W V FGS OSC PWM AG PG Function FG signal output terminal Forward and Reverse control terminal Motor center tap voltage input terminal Power supply terminal U phase output terminal Power ground terminal W phas

Features

  • s l 1) Operation voltage 1.8 to 6.0V ia 2) Lock detection/Automatic restart function 3) Built-in FG (frequency generation) t 4) Thermal shutdown protection 5) Over current protection n.
  • Absolute Maximum Ratings (Ta = 25℃) 6) PWM speed control 7) Soft switching technique to reduce acoustic noise 8) Forward and Reverse control e Parameter Symbol Limits Unit Supply voltage id Output current FG signal output voltage FG signal output current f PWM input voltage Power dissipation (JEDEC 2S.

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Datasheet Details

Part number AM8933
Manufacturer AMtek
File Size 570.89 KB
Description 3-Phase Sensor-less Fan Motor Driver
Datasheet download datasheet AM8933 Datasheet
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Full PDF Text Transcription

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AM8933 Motor Driver ICs 3-Phase Sensor-less Fan Motor Driver AM8933 The AM8933 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 Protection. Forward and Reverse control.  Applications 3-Phase sensor-less DC Fan Motor  Features l 1) Operation voltage 1.8 to 6.
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