The STR-W6754 is a quasi-resonant regulator specifically designed to satisfy the requirements for increased integration and reliability in switch-mode power supplies. It incorporates a primary control and drive circuit with an avalanche-rated power MOSFET. The regulator exhibits only low-level high-frequency EMI noise because of soft switching of the MOSFET close to ground (bottom point). A bottom-skip function minimizes an increase of operational frequency during light loads to improve system efficiency over the entire load range.

FEATURES ANDBENEFITS
■Rugged 650 V Avalanche-Rated MOSFET
  Simplified Surge Absorption
  No VDSSDerating Required
■0.96 ΩMaximum rDS(on)
■Two Operational Modes by Automatic Switching:
  Quasi-Resonant Mode for Normal Operation
  Burst Mode for Standby Operation or Light Loads
■Automatic or Manually Triggered Burst Standby Input Power <0.1 W at No Load
■Low Operating Current (6 mA typ)
■Auto-Bias Function
  Stable Burst Operation Without Generating Interference
■Internal Off-Timer Circuit
■Built-In Constant-Voltage Drive
■Multiple Protections:
  Pulse-by-Pulse Overcurrent Protection
  Overload Protection with Auto Recovery
  Latching Overvoltage Protection
  Undervoltage Lockout with Hysteresis
■RoHS Compliant