Features

• 650V avalanche rugged CoolMOS® with built-in startup

cell

• Quasiresonant operation till very low load

• Active burst mode operation for low standby input power

(< 0.1W)

• Digital frequency reduction with decreasing load for

reduced switching loss

• Built-in digital soft-start

• Foldback point correction and cycle-by-cycle peak

current limitation

• Maximum on/off time limitation

• Auto restart mode for VCC Overvoltage and

Undervoltage protections

• Auto restart mode for overload protection

• Auto restart mode for overtemperature protection

• Latch-off mode for adjustable output overvoltage

protection and transformer short-winding protection