SiFirst

SF6778S

PSR(VI)

  • Meet EPS Level 6
  • Proptietary super -QR/PSRTM(Quasi-Resonant &Primary Side Regulation)Control for High Efficiency and Low EMI
  • Max Frequency Clamping to Limit Power MOSFET Vds Spike @Output Short Circuit
  • Less than70mW Standby Power
  • ±5% CC and CV Precision
  • Built-in soft start function
  • Proprietary cable Drop Compensation
  • Built-in 600V Power MOSFET
  • Cycle-by-cycle current limiting
  • Built-in leading edge blanking (LEB)
  • Multi-Mode Control
  • VDD under voltage lockout (UVLO)
  • 运用

  • Battery chargers for cellular phones,cordless phones,PDA digital cameras ,etc
  • Replaces liner transformer and RCC SMPS
  • AC/DC LED lighting
      • 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 EPS Level 6 energy standard. The IC also has built-in cable drop compensation function to achieve excellent CV performance.  
        SF6778S uses Multi Mode Control to improve efficiency and reliability and to decrease audio noise energy @ light loadings. SF6778S also integrates the function of "Max. Frequency Clamping @ Output Short Circuit" to limits power MOSFET Vds spike when output short circuits occurs. 
        SF6778S integrates functions and protections of FB Short Protection, Under Voltage Lockout (UVLO), VDD Over Voltage Protection (VDD OVP), Output Over Voltage Protection (Output OVP), Soft Start, Cycle-by-cycle Current Limiting (OCP), Pin Floating Protection, VDD Clamping.  
        SF6778S is available in DIP8 packages.