onsemi NCP1345Q02D1R2G Low Dropout Voltage, Controller 11, 3.3 → 21 V 9-Pin, SOIC-9 NB

The ON Semiconductor highly integrated quasi−resonant fly back controller suitable for designing high−performance off line USB−PD and USB type c power converters. The included dual pin VCC architecture allows direct connection to the aux winding for simplified VCC management with a reduced parts count and increased performance.

Integrated X2 capacitor discharge capability
Primary side based constant output current limiting
Internal temperature shutdown
Rapid frequency fold back for fast reduction of switching frequency
Skip mode with output voltage compensation