A1184LUA-T Datasheet PDF - Allegro MicroSystems

The A1184 device is a standard, two-wire, unipolar, Hall effect switches. The operate point, BOP, can be field-programmed, after final packaging of the sensor and placement into the application. This advanced feature allows the optimization of the sensor switching performance, by effectively accounting for variations caused by mounting tolerances for the device and the target magnet.

FEATUREs and Benefits
Chopper stabilization
  Low switchpoint drift over operating temperature range
  Low stress sensitivity
Field-programmable for optimized switchpoints
On-chip protection
  Supply transient protection
  Reverse-battery protection
  On-board voltage regulator
  3.5 V to 24 V operation