Description
ALTAIR04-900 is a high-voltage all-primarysensing switcher intended for operating directly from the rectified mains with minimum external parts. It combines a high-performance lowvoltage PWM controller chip and a 900 V avalanche-rugged power section in the same package.

FEATUREs
■ Primary side constant voltage operations with
   no optocoupler
■ Adjustable and main-independent maximum
   output current for safe operations during
   overload/short circuit conditions
■ 900 V avalanche rugged internal power section
■ Quasi-resonant valley switching operation
■ Low standby consumption
■ Overcurrent protection against transformer
   saturation and secondary diode short circuit
■ SO16 package

APPLICATIONs
■ SMPS for energy metering
■ Auxiliary power supplies for 3-phases input
   industrial systems
■ AC-DC adapters