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1 Features

1? Qualified for automotive applications

? AEC-Q100 qualified with the following results:

– Device temperature grade 0: –40°C to 150°C

ambient operating temperature range

– Device HBM ESD classification level 3A

– Device CDM ESD classification level C6

? Digital unipolar-switch hall sensor

? 2.5-V to 5.5-V operating VCC range

? Magnetic sensitivity options (BOP, BRP):

– DRV5021A1-Q1: 2.9 mT, 1.8 mT

– DRV5021A2-Q1: 9.2 mT, 7.0 mT

– DRV5021A3-Q1: 17.9 mT, 14.1 mT

? Fast 30-kHz sensing bandwidth

? Open-drain output capable of 20 mA

? Optimized low-voltage architecture

? Integrated hysteresis to enhance noise immunity

? Standard industry package:

– Surface-mount SOT-23

2 Applications

? Automotive gear shifters, body closure

? Limit switches

? General proximity sensing

? Brushed dc motor feedback

? Door open and close detection

? Valve positioning

? Pulse counting

3 Description

The DRV5021-Q1 device is a low-voltage, digitalswitch,

Hall effect sensor for high-speed automotive

applications. Operating from a 2.5-V to 5.5-V power

supply, the device senses magnetic flux density, and

gives a digital output based on predefined magnetic

thresholds.

This device senses magnetic fields perpendicular to

the face of the package. When the applied magnetic

flux density exceeds the magnetic operate point (BOP)

threshold, the open-drain output of the device drives

a low voltage. When the flux density decreases to

less than the magnetic release point (BRP) threshold,

the output goes to high impedance. The hysteresis

resulting from the separation of BOP and BRP helps

prevent output errors caused by input noise. This

configuration makes system designs more robust

against noise interference.

The device operates consistently across a wide

ambient temperature range of –40°C to +150°C.