Low power offline switcher IC

LinkSwitch™-XT2 incorporates a 725 V power MOSFET, oscillator, simple ON/OFF control scheme, a high-voltage switched current source, frequency jittering, cycle-by-cycle current limit and thermal shutdown circuitry onto a monolithic IC. The start-up and operating power are derived directly from the DRAIN pin, eliminating the need for a bias winding and associated circuitry. 

Product Highlights

Easy to Design
• Lowest component count switcher solution
• Selectable device current limit
• Fully integrated auto-restart for short-circuit and open-loop protection
• Optional self-biased supply
• Frequency jittering greatly reduces EMI
• Meets HV creepage requirements between DRAIN and all other pins both on the PCB and at the package
• Pin-out simplifies PCB heat sinking