Allegro MicroSystems Inc. Three-Wire Hall-Effect Switch With Advanced Diagnostics APS11450LLHALX-3SLC

The APS11450LLHALX-3SLC is a three-wire Hall-effect switch designed for automotive and industrial applications, featuring advanced diagnostics and functional safety compliance with ASIL B according to ISO 26262. This sensor integrates background diagnostics for the signal path, regulator, Hall plate, and bias, along with overtemperature detection and nonvolatile memory, ensuring reliable operation in safety-critical systems. It operates within a voltage range of 3 to 30 V and is capable of withstanding junction temperatures up to 175¬8C, making it suitable for harsh environments. The device includes built-in protections against reverse battery, overvoltage, and electrostatic discharge (ESD), enhancing its robustness. The APS11450LLHALX-3SLC variant specifically offers a low output polarity with a temperature coefficient of -0.12%/¬8C and a magnetic operate point of 280 G. Available in a 3-pin SOT23-W surface mount package, this product is RoHS-compliant and lead-free, contributing to a reduced bill-of-materials and assembly costs. It is ideal for applications such as limit switches, safety interlocks, and position detection in automotive systems.