VIPER27 is an offline converter from ON Semiconductor. It integrates an 800V avalanche rugged power section, PWM control, two levels of over-current protection, overvoltage and overload protections, hysteretic thermal protection, soft-start and safe auto-restart after any fault condition removal. It is suitable for auxiliary power supply for consumer and home equipments, ATX auxiliary power supply, low/medium power AC-DC adapters, set-top boxes, DVD players and recorders, white goods and other applications.