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PT3617   Hi-sensitivity Hall-effect Latch


The PT3617 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. This Hall effect IC is optimal for DC brushless fan application. The supply voltage range is from 3.8V to 38V and the maximum output current is 50mA. The internal protection device could benefit PT3617 to survive up to -32V in reversed battery situation. This Hall effect sensor IC integrate the sensor, pre-amplifier with dynamic offset cancellation and the hysteresis comparator in single chip.


  • 3.8V to 38V wide operation voltage
  • High sensitivity
  • Reverse polarity protection (up to -60V)
  • Built-in dynamic offset cancellation
  • Open drain output
  • High balance and low thermal drift magnetic sensing
  • Support 40V load dump test


  • DC brushless motors
  • Proximity Sensor
  • Tachometers
  • Magnetic encoders
  • Automotive systems


  • TO92-3L/SOT23-3L
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