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AM4961A - SINGLE PHASE FULL WAVE PWM MOTOR DRIVER

General Description

The AM4961A is highly integrated feature rich single phase Brushless Direct Current (BLDC) full wave motor driver with PWM control function for fans, blowers and extractors.

Key Features

  • Operating voltage : 3.5V to 16V.
  • Internal H-Bridge with 1A Peak Current Capability.
  • Speed Control with external PWM, DC or Thermistor signals.
  • Minimal Speed Setting.
  • Built-in Hall Bias Circuit.
  • Reference Voltage Output.
  • Rotor Lock Protection with Output Shutdown and Auto Restart.
  • Rotation Speed Indication (FG).
  • Rotation or Lock State Indication (RD).
  • Built-in Thermal Shutdown Circuit.
  • Industry sta.

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Full PDF Text Transcription (Reference)

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NEW PRODUCT A Product Line of Diodes Incorporated AM4961A SINGLE PHASE FULL WAVE PWM MOTOR DRIVER Description The AM4961A is highly integrated feature rich single phase Brushless Direct Current (BLDC) full wave motor driver with PWM control function for fans, blowers and extractors. For system flexibility the motor speed can be controlled by either an external PWM signal or by a DC voltage or from a Thermistor network. Based on the input signal, the AM4961A adjust the output duty cycle. To help protect the motor coil, the AM4961A provides a rotor lock protection which shuts down the output if rotor lock is detected. The device automatically re-starts when the rotor lock is removed.