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AH9279 - TWO PHASE DUAL-COIL CMOS SMART FAN MOTOR DRIVER

General Description

The AH9279 is a most advanced fan control and drive Hall IC manufactured by special CMOS process.

This IC consists of voltage reference, Hall sensor, signal amplifier, wave shaping circuit, locked rotor detector, locked rotor protection and restart circuit, output drive circuit, etc..

Key Features

  • On Chip Hall Sensor.
  • Built-in Zener Diodes Protection for Output Driver.
  • Power Efficient CMOS and Power MOSFET Drivers Allow 400mA Without Overheating.
  • 5V and 12V Operation.
  • High Sensitivity for Switching Symmetry.
  • Locked Rotor Shutdown and Auto Restart.
  • ESD Rating: 4000V(Human Body Model) 400V(Machine Model).

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Datasheet Details

Part number AH9279
Manufacturer BCD
File Size 279.68 KB
Description TWO PHASE DUAL-COIL CMOS SMART FAN MOTOR DRIVER
Datasheet download datasheet AH9279 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Data Sheet TWO PHASE DUAL-COIL CMOS SMART FAN MOTOR DRIVER AH9279 General Description The AH9279 is a most advanced fan control and drive Hall IC manufactured by special CMOS process. This IC consists of voltage reference, Hall sensor, signal amplifier, wave shaping circuit, locked rotor detector, locked rotor protection and restart circuit, output drive circuit, etc.. To allow survival in a harsh environment and in consideration of low cost, the AH9279 has been designed with many functions internally, and requires less external components. When there is no motion for one second, the IC will detect locked rotor conditions, enter protection mode automatically and disable two outputs for five seconds. Then, it will turn on drive current from one channel for one second.