Allegro MicroSystems Inc. ASIL-A, Two-Wire End-Of-Line Programmable Hall-Effect Switch/Latch APS11900LUAA

The APS11900LUAA is a two-wire end-of-line programmable Hall-effect switch/latch designed for automotive and industrial safety applications. It is compliant with ASIL A safety standards as per ISO 26262, making it suitable for use in safety-related systems. The device features internal diagnostics, a defined safe state, and a highly programmable interface that allows customization of magnetic switch points, temperature coefficients, and hysteresis. It supports both unipolar and bipolar configurations, accommodating various magnet types including SmCo, NdFeB, and ferrite. This Hall-effect sensor operates over a wide temperature range from -40¬8C to 175¬8C and is designed to withstand harsh environments, with built-in protections against reverse battery, overvoltage (up to 40 V), and electrostatic discharge (ESD). The APS11900LUAA is available in a 3-pin SIP package, which facilitates PCB-less applications by integrating necessary passive components. Its robust design and minimal external component requirements contribute to reduced bill of materials and assembly costs, making it a viable option for engineers looking for reliable and efficient sensor solutions in safety-critical applications.