SiFirst SF6778S
SF6778S is a high performance, highly integrated QR (Quasi Resonant Mode) and Primary Side Regulation (PSR) power switch for offline small power converter applications. SF6778S has proprietary super-QR/PSRTM control for high efficiency and low EMI, which can ensure system to meet EPSFEATURES
● Meet EPS Level 6● Built-in 600V Power MOSFET
● Proprietary super-QR/PSRTM (Quasi- Resonant & Primary Side Regulation) Control for High Efficiency and Low EMI
● Proprietary Cable Drop Compensation
● Max. Frequency Clamping to Limit Power MOSFET Vds Spike @ Output Short Circuit
● Less than 70mW Standby Power
● ±5% CC and CV Precision
● Multi-Mode Control
● Cycle-by-Cycle Current Limiting
● Leading Edge Blanking (LEB)
● Soft Start
● Output Over Voltage Protection
● VDD UVLO, OVP & Clamp
APPLICATIONS
● Battery chargers for cellular phones, cordless phones, PDA, digital cameras, etc● Replaces linear transformer and RCC SMPS
● AC/DC LED lighting
GENERAL DESCRIPTION