The ACS37035KLACTR-040B5 from Allegro MicroSystems is a Hall-Effect Current Sensor. This current transducer requires a supply voltage of 5 V and offers current sensing of ±40 A. It has a quiescent output voltage of 2.5 V and a sensitivity of 50 mV/A. This current sensor has a high operating bandwidth of 1 MHz for fast control loops or where high-speed currents are monitored and a response time of 0.45 us. It provides high isolation by magnetically coupling the field generated by the current in the conductor to the monolithic. This UL 62368-1 certified current transducer offers user-configurable overcurrent FAULT detection, allowing short-circuit detection for system protection with a fault threshold that is proportional to the current range.

This transducer utilizes Allegro's Hall-effect-based current sensing technology to achieve reinforced isolation of up to 1000 VRMS. This AEC-Q100 automotive-grade sensor has a low internal primary conductor resistance of 1 milli-ohm for better power efficiency. These RoHS-compliant current transducers are available in surface-mount packages that measure 10.21 x 10.31 x 2.54 mm and are suitable for load detection and management, switch-mode power supplies, and motor control applications.