JW1758B

JW1758A/B/C Offline Step-down LED Controller With PFC and No Auxiliary Winding Parameters Subject to Change Without Notice DESCRIPTION FEATURES The JW1758A/B/C is a constant current LED controller with high current accuracy which applies to single stage step-down power factor corrected LED drivers. 600V power MOS is integrated, which can significantly simplify the design of LED lighting system. JW1758A/B/C integrates high voltage power source, and can be supplied by line voltage directly, and auxiliary winding is not needed. High accuracy of output current is achieved by sampling the output current directly. Critical conduction mode operation reduces the switching losses and largely increases the efficiency. JW1758A/B/C has multi-protection functions which largely enhance the safety and reliability of the system, including VCC over-voltage protection, VCC UVLO, LED open protection, pulse-by-pulse current limit, inductor short protection and over-temperature protection. No auxili...