SF1539W Datasheet - SiFirst

SF1539W, PWM Power Switch

SF1539W η -BalanceTM PWM Power Switch Fixed 50KHz Fsw

Features

* Built-in 700V Power MOSFET
* Proprietary η -BalanceTM Control to Boost Light Load Efficiency
* Proprietary “Zero OCP/OPP Recovery Gap” Control
* Fixed 50KHz Switching Frequency
* Built-in Soft Start Function
* Very Low Startup Current
* Frequency Reduction and Burst Mod

Applications

* Offline AC/DC Flyback Converter for
* AC/DC Adaptors
* Open-frame SMPS
* Set-Top Box Power Supplies

SF1539W-SiFirst.pdf