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NCP1339 Datasheet Quasiresonant Controller

Manufacturer: onsemi

Overview: NCP1339 High-Voltage, QuasiResonant Controller featuring Valley Lock-Out and Power Saving Mode The NCP1339 is a highly integrated quasi−resonant flyback controller capable of controlling rugged and high−performance off−line power supplies as required by adapter applications. With an integrated active X−cap discharge feature and power savings mode, the NCP1339 can enable no−load power consumption below 10 mW for 45 W notebook adapters.

Key Features

  • a proprietary valley.
  • lockout circuitry, ensuring stable valley switching. This system works down to the 6th valley and toggles to a frequency foldback mode to eliminate switching losses. When the loop tends to force below 25.
  • kHz frequencies, the NCP1339 skips cycles to contain the power delivery. To help build rugged converters, the controller features several key protective features: an internal brown.
  • out, a non.
  • dissipative Over Power Protection for a constant ma.

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NCP1339 Distributor