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PT3921   12V All-in-One Single Coil Smart DC Fan IC

The PT3921 is designed for magnetic actuating using a bipolar magnetic field. The built-in dynamic offset cancellation of pre-amplifier stage achieves optimal symmetrical magnetic sensing. The output driver provides a linear drive to eliminate switching noise. This Hall-effect IC is optimal for DC brushless fan application. The supply voltage range is from 2.7V to 17V and the output current is 400mA.

  • 2.7V~17V supply voltage
  • Single phase full wave
  • Soft switching output
  • Built-in Hall sensor
  • Motor locked protection & automatic restart
  • ESD protection: 8KV
  • Built-in hysteresis comparator
  • Built-in Zener diode
  • High sensitivity & low thermal drift magnetic sensing
  • Low power consumption & high driving efficiency
  • Support pre-driver application
  • Single coil12V brushless DC fan
  • Cooling fan for household electronics
  • General purpose cooling fan solution e.g. Audio
  • Cooling fan for game consoles.

         PT3921 /PKG:TO92 -4pin

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