Allegro MicroSystems Inc. Sensors, Transducers - Magnetic Sensors - Switches (Solid State) A1183LLHLT-T

The A1183LLHLT-T is a sensitive, two-wire, unipolar Hall-effect switch with field-programmable switchpoints, designed for automotive applications such as seat track position and shift selector sensing. It operates from a supply voltage of 3.5 to 24 V and features on-chip transient and reverse-battery protection. The device is packaged in a 3-pin SOT-23W surface-mount format and operates over an ambient temperature range of -40°C to 150°C. Its supply current in the high-output state is 12 to 17 mA when a sufficient south-polarity magnetic field is present. The magnetic operate point range is programmable between 60 and 200 G, with a switchpoint step size of 4 to 12 G and a temperature drift of ±20 G. Chopper stabilization ensures low switchpoint drift and stress sensitivity. The part is in production but classified as NOT FOR NEW DESIGN.