NCL30030

NCL30030 Combination Power Factor Correction and Quasi-Resonant Flyback Controllers for LED Lighting This combination IC integrates power factor correction (PFC) and quasi−resonant flyback functionality necessary to implement a compact and highly efficient LED driver for high performance LED lighting applications. The PFC stage utilizes a proprietary multiplier architecture to achieve low harmonic distortion and near−unity power factor while operating in a Critical Conduction Mode (CrM). The circuit incorporates all the features necessary for building a robust and compact PFC stage while minimizing the number of external components. The quasi−resonant current−mode flyback stage features a proprietary valley−lockout circuitry, ensuring stable valley switching. This system works down to the 4th valley and toggles to a frequency foldback mode with a minimum frequency clamp beyond the 4th valley to eliminate audible noise. Skip mode operation allows excellent efficiency in light load conditions while consuming very low standby power consumption. Common General Features Wide VCC Range from 9 V to 30 V with Built−in Overvoltage Protection High−Voltage Startup Circuit Integrated High−Voltage Brown−Out Detector Fault Input for Severe Fault Conditions, NTC Compatible (Latch and Auto−Recovery Options) 0.5 A / 0.8 A Source / Sink Gate Drivers Internal Temperature Shutdown www.onsemi.com SOIC−16 NB MISSING PIN 2 CASE 751DT MARKING DIAGRAM 1 BO/HV MULT PControl PONOFF QC...