Allegro MicroSystems Inc. ASIL-A, 2-Awire Hall-Effect Switch Sensor IC APS11500LLHALX-0SL2A

The APS11500 is a two-wire planar Hall-effect switch designed for automotive safety systems, featuring ASIL A compliance per ISO 26262 and integrated diagnostics for safe state communication. It operates from 3 to 24 V and withstands junction temperatures up to 175°C, with AEC-Q100 Grade 0 qualification. The device includes an integrated 40 V load-dump clamp, reverse-battery protection, and an internal voltage regulator. The APS11500LLHALX-0SL2A variant is a surface-mount SOT23-W package with unipolar south-sensing operation, a switch threshold magnitude of 20 to 80 G for BOP and 10 to 60 G for BRP, and a low output current of 2 to 5 mA, compatible with SmCo, NdFeB, and ferrite magnets. All variants include overtemperature detection and high EMC/ESD immunity. The UC package option integrates discrete passives for PCB-less designs.