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PT3953   5V All-in-One Single Coil Smart DC Fan IC with PWM

The PT3953 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 notebook cooling fan application with speed controllable by PWM input signal. The supply voltage range is from 1.8V to 8.5V and the output current is 400mA.

  • 1.8V~8.5V supply voltage
  • Single phase full wave
  • Soft switching output
  • Motor locked protection & automatic restart
  • Speed controllable by PWM input signal
  • ESD protection: 8KV
  • FG output
  • Support pre-driver application
  • Built-in hysteresis comparator
  • Built-in Zener diode
  • High sensitivity & low thermal drift magnetic sensing
  • Low power consumption & high driving efficiency
  • Single coil 5V brushless DC fan with PWM function
  • Cooling fan for notebook
  • Cooling fan for portable device.

PT3953 /PKG:TSOT26F -6pins

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