A8499SLJTR-T is a highly integrated and cost-optimized constant current zero-voltage switching (ZVS) flyback controller from Allegro. It is a closed loop circuit with a unique switching pattern and voltage sensing capability, which helps reduce EMI noise, extend system lifetime, and improve system power efficiency. The part is designed to operate off a wide input voltage range (from 24 to 675V AC) and provides output parameters such as frequency (73 to 495kHz), operating range (up to 30A), and frequency accuracy (1%), along with comprehensive protections such as current limiting and thermal shutdown. Its wide operating range and advanced protection circuit make it ideal for solutions such as AC-DC and DC-DC power conversion, industrial, consumer and home appliance applications.