Description

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

Features

• Optoless primary side constant voltage

operations

• Adjustable and mains-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

• SO16N package

Applications

• SMPS for energy metering

• Auxiliary power supplies for 3-phase input

industrial systems

• AC-DC adapters