NCL2801 Overview
Power Factor Controller, High-Efficiency, Enhanced for Lighting 8 1 SOIC−8 CASE 751 NCL2801 The 8−pin PFC controller NCL2801 is designed to drive PFC boost stages. It is based on an innovative Valley Count Frequency Fold−back (VCFF) method. The circuit classically operates in Critical conduction Mode (CrM) for high load values.
NCL2801 Key Features
- Near-Unity Power Factor
- Critical Conduction Mode (CrM)
- Valley Count Frequency Fold-Back (VCFF)
- Fast Line / Load Transient pensation (Dynamic Response
- Brown-out Detection
- Two-level Line Feed-Forward (HL&LL)
- Valley Turn-on (No Valley Hoping by Construction)
- High Drive Capability: -500 mA / +800 mA
- VCC Range: from 10.5 V to 27 V
- [-C-]& [-D-] Option: Low VCC Start-up Level (12.5 V)