NCL2801 Datasheet (High-Efficiency Power Factor Controller)

Part: NCL2801
Manufacturer: onsemi (official site)
Size: 421.54 KB

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)

NCL2801 Description

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.