NCL30185 Datasheet - ON Semiconductor

NCL30185 Quasi-Resonant Primary Side Current-Mode Controller

Pin No Pin Name Function 1 ZCD Zero Crossing Detection 2 VS Input Voltage Sensing 3 COMP Filtering Capacitor 4 SD Thermal Foldback and Shutdown 5 CS Current Sense 6 GND * 7 DRV Driver Output 8 VCC IC Supply Pin Pin Description Connected to the auxiliary winding, this pin d.

NCL30185 Power Factor Corrected Quasi-Resonant Primary Side Current-Mode Controller for LED Lighting with Line Step Dimming and www.onsemi.com Thermal Foldback The NCL30185 is a controller targeting isolated and non isolated “smart dimmable” constant current LED drivers. Designed to support flyback, buck boost, and SEPIC topologies, its proprietary current control algorithm provides near unity power factor and 8 1 SOIC 8 NB CASE 75.

NCL30185 Features

* PIN CONNECTIONS 1 ZCD VCC

* Quasi

* resonant Peak Current

* mode Control Operation VS DRV

* Valley Lockout Optimizes Efficiency over the Line/Load Range

* Constant Current Control with Primary Side Feedback

* Tight LED Constant Current Regulation of

NCL30185-ONSemiconductor.pdf