Profile: Melexis, Inc. manufactures and delivers advanced mixed signal semiconductors, sensor ICs & programmable sensor IC systems. We provide brushless DC fan commutation, DC motor controls, headlamp position control, seat position monitors, window lifters, wireless access controls and motion sensors. Our automotive wiper systems are evolved from simple electromechanical systems to electronically controlled marvels. Our US5781 is a unipolar Hall-effect switch designed in mixed signal CMOS technology. It features a voltage regulator, hall sensor with dynamic offset cancellation system, schmitt trigger and an open-drain output driver. Our automotive switch ranges from simple mechanical snap or momentary switches up to safety critical seat belt latch switches.