SF1533 η-BalanceTM PWM Power Switch Fixed 50KHz .
SiFirst Technology
SF1533 - PWM Power Switch
SF1533 η-BalanceTM PWM Power Switch Fixed 50KHz Fsw FEATURES ◆ Built-in 600V Power MOSFET ◆ Proprietary η-BalanceTM Control to Boost Light Load Effi.