OH543/OH443/OH443R Unipolar Hall IC

Unipolar Hall IC for high Temperature, good reliability

Supply voltage

Operating point (Bop)

Release point (BRP)

Operating temperature

Average supply current

Output current




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OH543 OH443 OH443R Unipolar Hall effect IC

Product description

OH543,OH443, OH443R series unipolar hall IC includes an on-chip Hall voltage generator for magnetic sensing, an amplifier that amplifies the Hall voltage, a Schmitt trigger to provide switching hysteresis for noise rejection, and open-collector output. It detects the changes of the Magnetic field and outputs a digital voltage signal. With the typical feature of a wide range of supply voltage, operating temperature, and high load capacity, they perform well in many applications, such as position control, speed detection, and flow detection as a non-contact magnetic sensor. Flat TO-92S, SOT89 (SC23) package style is available.



  • 3.8V to 30V DC operation voltage
  • Open-Collector sinking type
  • 50mA maximum sinking output current.
  • Reverse Polarity Protection
  • Good temperature performance


  • The brushless DC motor, DC fans, DC water pump
  • The home appliance control panel
  • Sewing equipment, textile machinery
  • Speed sensor, position detecting, counting
  • The flow sensor, flow meter
  • The autoignition, safety alarm device
  • other industrial control fields

Magnetic-electrical Transfer Characteristics




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