View mc33363r datasheet:

Order this document by MC33363/D MC33363 Advance Information High Voltage Switching HIGH VOLTAGE Regulator OFF–LINE The MC33363 is a monolithic high voltage switching regulator that is SWITCHING REGULATOR specifically designed to operate from a rectified 240 Vac line source. This integrated circuit features an on–chip 700 V/1.0 A SenseFET power switch, SEMICONDUCTOR 450 V active off–line startup FET, duty cycle controlled oscillator, current limiting comparator with a programmable threshold and leading edge TECHNICAL DATA blanking, latching pulse width modulator for double pulse suppression, high gain error amplifier, and a trimmed internal bandgap reference. Protective features include cycle–by–cycle current limiting, input undervoltage lockout with hysteresis, output ove