NCP1339HDR2G Information

NCP1339 High Frequency Quasi-Resonant Controllers

ON Semiconductor NCP1339 Controllers are designed as highly-integrated quasi-resonant flyback controllers that drive rugged, high-performance offline power supplies. Proprietary valley-lockout circuitry ensures stable valley switching during the quasi-resonant current-mode flyback stage. To eliminate switching losses, the NCP1339 works down to the sixth valley and toggles to a frequency foldback mode. When the loop tends to force below 25kHz frequencies, the NCP1339 skips cycles to contain the power delivery. The power savings mode and integrated active X-cap discharge features allow no-load power consumption below 10mW for 45W notebook adapters. The NCP1339 controller includes several key protective features to help develop rugged converters. These protection features include non-dissipative overpower protection, latched overvoltage protection, and internal brown-out. Non-dissipative overpower protection ensures constant maximum output current regardless of the input voltage.Learn More

Specifications

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Alternate Names

ON Semiconductor has several brands around the world that may have alternate names for NCP1339HDR2G due to regional differences or acquisition. NCP1339HDR2G may also be known as the following names: