NCP1345 Datasheet (ON Semiconductor) - High-Voltage Quasi-Resonant Flyback Controller

NCP1345, High-Voltage Quasi-Resonant Flyback Controller

Pin Name Pin Number Function Fault 1 The controller enters fault mode if the voltage on this pin is pulled above or below the fault thresholds.

A precise pull up current source allows direct interface with an NTC thermistor.

FB 2 Feedback input for the QR Flyback controller.

Allows direct c

NCP1345 Features

* a precise, primary side based output current limiting circuit to ensure a constant output current limit regardless of programmed output voltage, or nameplate output power. The quasi

* resonant (QR) current

* mode flyback stage features proprietary valley

* lockout circuitry to ensu