NCL30083 Datasheet - ON Semiconductor

NCL30083 - Dimmable Quasi-Resonant Primary Side Current-Mode Controller

Pin No Pin Name Function 1 SD Thermal Fold *back and shutdown 2 ZCD Zero Crossing Detection 3 CS Current sense 4 GND * 5 DRV Driver output 6 VCC Supplies the controller 7 VIN Brown *Out Input voltage sensing 8 SS Soft *Start Pin Description Connectin

NCL30083 Dimmable Quasi-Resonant Primary Side Current-Mode Controller for LED Lighting with Thermal Fold-back The NCL30083 is a PWM current mode controller targeting isolated www.onsemi.com flyback and non isolated constant current topologies.

The controller operates in a quasi resonant mode to provide high efficiency.

Thanks 8 8 to a novel control method, the device is able to precisely regulate a constant LED current from the primary side.

This removes the need for s

NCL30083 Features

* Quasi

* resonant Peak Current

* mode Control Operation

* Primary Side Sensing (no optocoupler needed)

* Wide VCC Range

* Source 300 mA/Sink 500 mA Totem Pole Driver with 12 V Gate Clamp

* Precise LED Constant Current Regulation ±1% Typical

NCL30083-ONSemiconductor.pdf