MC33369

The MC33369 is a type of monolithic high voltage power switching regulators, which integrates the required conve rter functions with a unique programmable state controller, acceting a simple and economical powersystem solution for office automation, consumer, and industrial products. The device is designed to operate directly from a rectified AC line source, and in flyback converter application is capable of offering an output power in excess of 150W with a fixed AC input of 100 V, 115 V, or 230 V, and in excess of 90W with a variable AC input that ranges from 85 V to 265 V.

Features of MC33369 are: (1)programmable state controller; (2)on-chip 700 V SENSEFET power switch circuit; (3)rec tified ac line source operation from 85 V to 265 V; (4)on-chip 700 V active off-line start-up circuit; (5)latching pwm for double pulse suppression; (6)cycle-by-cycle current limiting; (7)input undervoltage lockout with hysteresis; (8)non-latching internal thermal shutdown; (9)enhanced functionality over top200 and top221 series.

The absolute maximum ratings and electrical characteristics of the MC33369 can be summarized as:(1)power switch and start up circuit(voltage range pin 5):-0.3V to 700V; (2)power supply voltage range:-0.3V to 10V; (3)feedback in put(voltage range):-0.3V to 10V; (4)state control input current: 50mA; (5)operating junction temperature:-40 to 150; (6)storage temperature:-65 to 150.  Electrical characteristics: (1)frequency(Tj=25): 90kHz min, 100kHz typ and 110kHz max; (2)feedback input shunt regulation(volatge): 8.3V min, 8.6V typ and 8.9V max; (3)feedback inp ut current at threshold of duty cycle reduction: 1.2mA min, 1.6mA typ and 2.1mA max; (4)external shutdown activati on , current into pin2 to set latch: 30mA min, 70mA typ and 150mA max, etc.