Basic Info.

1 Features and Benefits
△ High sensitivity
△ Digital output, bipolar latch
△ Stable over the entire temperature range
△ Wide operating voltage range: 4.5V ~ 24V
△ Strong resistance to mechanical stress
△ Reverse power supply protection
△ Non-contact output, safety and reliable
△ TO-92UA, SOT-23-3L and SOT-89 package options
△ Developed according to the EU RoHS and REACH

2 Application Examples
△ Automotive electronics, Consumer electronics and Industrial electronics
△ Water flow sensing
△ Electronic steering column lock
△ Door latch system
△ Seat adjustment
△ Speed measurement and tachometer
△ Motor control
△ Brushless DC motor

The AH3031 is a high sensitivity digital bipolar-latch Hall IC with single output. It has good temperature stability and latch function. The AH3031 includes the following on a single silicon chip: reverse voltage protector, voltage regulator, temperature compensation circuit, Hall-voltage generator, signal amplifier, Schmitt trigger and open collector output driver, etc. The integrated voltage regulator and temperature compensation circuit ensure that the sensor works stably in a wide voltage and temperature range. The reverse voltage protection circuit prevents the sensor from being damaged by reverse voltage.
The AH3031, produced with bipolar technology, is more stable and reliable in some special application. It is available in three package types: SOT-23-3L (Type M), SOT-89 (Type S), and TO-92UA (Type UA). Each package is lead (Pb) free, with 100% matte tin plated leadframes.