JW1572 Datasheet | JoulWatt Technology

DESCRIPTION FEATURES JW1572 is a constant voltage controller with high - Low Quiescent Current voltage accuracy which applies to single stage - +0.6A/-1.4A Peak Gate Drive Current boost power factor correction (PFC) applications. - High Power Factor and Low THD Constant on time control strategy ensures high power factor, and the input voltage detection circuit is not needed, which simplifies the system design and saves the loss. Critical conduction mode operation reduces the switching losses, improves the EMI performance and largely increases the efficiency. - Critical Conduction Mode - - - - High Reference Voltage Accuracy y High Efficiency over Wide Operating Range nl Reduce Frequency at Light Load O Open Feedback Protection - - - Disable Function e Cycle by Cycle Current Limit by CS Voltage Us Internal over Temperature Protection JW1572 has multi-protection functions which s largely enhance safety and reliability of the e system, including VCC UVLO, CS short current m protection (SCP), FB over voltage protection, 2nd ti OVP and over temperature protection. JW1572 is available in SOP8 package. eng pany’s Logo is Protected, “JW” and “JOULWATT” are Registered h Trademarks of Joulwatt Technology Co., Ltd. gs TYPICAL APPLICATION - 2nd OVP - SOP8 Package APPLICATIONS - SMPS - AC-DC Adapter - Flat TV r Ton EMI Fo AC Filter ~ N1 Lb Naux RFB2 Cin Rz 5 FB RFB1 VCCCVIN VCC 4 6 NC CS 3 Qb ~ Cp Cz 7...