NCL30188

NCL30188 Power Factor Corrected Quasi-Resonant Primary Side Current-Mode Controller for LED Lighting with Thermal Foldback www.onsemi.com The NCL30188 is a controller targeting isolated and non−isolated “smart−dimmable” constant−current LED drivers. Designed to 8 support flyback, buck−boost, and SEPIC topologies, its proprietary current−control algorithm provides near−unity power factor and 1 SOIC−8 NB tightly regulates a constant LED current from the primary side, thus CASE 751 eliminating the need for a secondary−side feedback circuitry or an optocoupler. Housed in the SOIC8, the NCL30188 is specifically intended for very compact space−efficient designs. The device is highly integrated with a minimum number of external components. A robust suite of MARKING DIAGRAM 8 L30188x ALYW safety protections is built in to simplify the design. To ensure reliable G operations at elevated temperatures, a user configurable current 1 foldback circuit is also provided. Pin−to−pin compatible to the NCL30088, the NCL30188 provides the same benefits with in addition, an increased resolution of the L30188x = Specific Device Code x = A, B A = Assembly Location digital current−control algorithm for a 75% reduction in the LED current quantization ripple. L = Wafer Lot Y = Year W = Work Week Features G = Pb-Free Package Quasi−resonant Peak Current−mode Control Operation Constant Current Control with Primary Side Feedback Tight LED Constant Current Regulation of ±2% Ty...