MicroSystemsThe ACS724LLCTR-20AB-T is an isolated current sensor IC manufactured by Allegro MicroSystems. It is a board mount current sensor designed to detect the low-level AC or DC currents within a variety of applications. It features 5V Vcc sensing, low leakage current up to 20A, and an operating temperature range of -40°C to +125°C. It also has open-collector output with a 3.5 V to 5 V supply range. The device is capable of providing galvanic isolation up to 4,000 V rms, making it suitable for many isolated application requirements such as current sensing, power metering, overload protection, motor control, SMPS regulation, and other industrial control applications.