ALTAIR04-900TR

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

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. 

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