Integrated Hall Effect Current Sensor in SOT23–W 5-Pin Package

The ACS37041 is a fully integrated Hall-effect-based current sensor IC that provides a galvanically isolated voltage output proportional to the sensed current. Unlike traditional shunt-based solutions, the ACS37041 does not require an external sense resistor, simplifying system design and reducing component count. It features an integrated conductor with low resistance for current measurement, which reduces power losses and improves efficiency. The ACS37041 employs a differential sensing technique with two Hall plates to effectively reject common-mode magnetic fields to ensure accurate and reliable current measurements.

The ACS37041 is available in a compact SOT23-W package, making it suitable for space-constrained applications. It offers a wide sensing range up to 30 A and maintains high accuracy over its full operating temperature range. The device's inherent galvanic isolation (functionally isolated for rails to 100 V) enhances system safety and simplifies integration by eliminating the need for complex isolation schemes. The ACS37041 is designed for a variety of applications such as motor control, battery management and power supplies, where accurate and reliable current sensing is essential.