ONSEMI NCP1342BMDCDD1R2G

NCP1342 is a highly integrated quasi-resonant flyback controller suitable for designing high-performance off−line power converters. With an integrated active X2 capacitor discharge feature, the NCP1342 can enable no-load power consumption below 30mW. The NCP1342 features a proprietary valley-lockout circuitry, ensuring stable valley switching. This system works down to the 6th valley and transitions to frequency foldback mode to reduce switching losses. To help ensure converter ruggedness, the NCP1342 implements several key protective features such as internal brownout detection, a no-dissipative over power protection (OPP) for constant maximum output power regardless of input voltage, a latched overvoltage and NTC-ready overtemperature protection through a dedicated pin. Applications include notebook adapters, flat TV SMPS, computer power supplies, phone, tablet adapters, medium or high power AC-DC adapters, ultra high density AC-DC adapters and USB PD compliant.