HK402H Datasheet Text
HK402H
High Voltage Hall Effect Switch Sensor 1. Introduction
HK402H Hall-Effect bipolar sensor, employed with high voltage bipolar technology, has been designed purposely for automotive and industrial applications, and operates with supply voltages from 3.8 V to 60 V in temperature range from -40 °C up to 150 °C. AH402H is available in SMD-package SOT23 and in the leaded version TO92UA.
2. Features
- Operates from 3.8 V to 60 V supply voltage
- Overvoltage protection capability up to 80 V
- Highest ESD performance up to ±4 kV
- Short-circuit protected open-drain output
- Wide temperature range from -40 °C to 150 °C
- Reverse-voltage protection at VSUP pin
- Ideal sensor for applications in extreme automotive and industrial environments
- Tiny SOT23 (-SU) package and TO92 (-UA )package
3. Potential Applications
- Brushless DC motor mutation
- Speed measurement
- Revolution counting
- Angular position detection
- Proximity detection
4. Block Diagram
The circuit includes temperature pensated voltage regular, Hall plate, signal amplifier and Schmitt-Trigger in single silicon chip. The regulated voltage provides the reference voltage for the hall plate. A magnetic field perpendicular to the sensor surface generates a hall voltage, which is amplified and then sent to a Schmitt trigger. A protection diode against reverse power supply is integrated.
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HK402H
High Voltage Hall Effect Switch Sensor
VDD
Voltage Regulator
VREF
Hall Plate
AMP
OUT GND...