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

ACS37041 and ACS37042 are fully integrated Hall-effect-based current sensor ICs that provide a galvanically isolated voltage output proportional to the sensed current. Unlike traditional shunt-based solutions, ACS37041 and ACS37042 do not require an external sense resistor, simplifying system design and reducing component count. They feature an integrated conductor with low resistance for current measurement, which reduces power losses and improves efficiency. ACS37041 and ACS37042 also employ a differential sensing technique with two Hall plates to effectively reject common-mode magnetic fields and ensure accurate and reliable current measurements. ACS37041 features functional isolation up to 100V_RMS and ACS37042 features basic isolation up to 285 V_RMS.

ACS37041 and ACS37042 are available in a compact SOT23-W package, making them suitable for space-constrained applications. They offer a wide sensing range up to 30 A and maintain high accuracy over their full operating temperature range. The devices’ galvanic isolation enhances system safety and simplifies integration by eliminating the need for complex isolation schemes. The ACS37041 and ACS37042 are designed for a variety of applications such as motor control, battery management and power supplies, where accurate and reliable current sensing is essential.