SD4872 Datasheet | Silan Microelectronics

Silan Microelectronics SD4872X_Datasheet CURRENT MODE PWM＋PFM CONTROLLER DESCRIPTION SD4872X is a current mode PWM controller IC for high performance, low standby power offline flyback converter application. In no load or light load condition, the IC operates in Light Load Mode to reduce switching loss and improve efficiency. Large startup resistor could be used in the startup circuit to minimize the standby current because of low startup current. SD4872X offers plete protection functions including cycle- by-cycle over current protection, over load protection, over voltage and under voltage protections for VDD voltage, etc. Excellent EMI performance is achieved with frequency shuffling technique and soft switching control at the totem pole gate driver output. Features APPLICATIONS - Adapters - Frequency shuffling to improve EMI performance - Set-Top Box Power Supplies - Light Load Mode for minimum standby power - 65k Hz switching frequency - 10µA low startup current - Internal LEB circuit - VDD over-voltage and under-voltage protection - External programmable over-temperature protection - Brown-out protection - External programmable output over-voltage protection - Over-power pensation - Gate output voltage clamp - Cycle-by-cycle current limiting - Over load protection - SOP8 package ORDERING INFORMATION Part No. SD4872 SD4872TR SD4872R SD4872RTR Package SOP-8-225-1.27 SOP-8-225-1.27 SOP-8-225-1.27...