SiFirst

SF7301

SCR

  • Proprietary Super- SRTM Technology
  • Synchronous Rectification Controller
  • Suited for High-Side and Low-Side of Flyback Converters in QR,DCM and CCM Operation
  • Built In 1.25V Reference Voltage and Error Amplifier For Eliminating XX431(for Low-side)
  • Programable Green Mode Control for Energy Saving at Light Load
  • <1mA Quiescent Current for Energy Saving
  • Primary-Side On Time Expansion and Shrink Protection
  • VDD Range From 3.5V to 5.5V
  • 运用

    Offline AC/DC fly-back converter for
  • AC/DC adapters
  • Open-frame SMPS
      • SF7301 is a secondary-side Synchronous Rectification (SR) controller to drive SR MOSFET for improved efficiency. 
        SF7301 can be applied in Continuous or Discontinuous Conduction Mode(CCM and DCM) and Quasi-Resonant(QR) flyback converters based on a proprietary Super- SRTM Control for SR MOSFET. The IC builts in a high precision reference voltage(1.25V) and an error amplifier to eliminating XX431 for cost saving. 
        SF7301 integrates functions and protections of Under Voltage Lockout(UVLO),VDD Clamper, Primary-side MOSFET on time Expansion and Shrink Protections ,etc. 
        SF7301 is available in SOP-8 package.