Power Integrations LNK3604 LinkSwitch-XT2 Off-Line Switcher ICs are energy efficient, low-power ICs with integrated system level protection. The LinkSwitch-XT2 incorporates a 725V power MOSFET, oscillator, simple ON/OFF control scheme and a high-voltage switched current source. Additional features include are frequency jittering, cycle-by-cycle current limit and thermal shutdown circuitry, all 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.
Feature
- Lowest component count switcher solution
- Selectable device current limit
- Fully integrated auto-restart for short-circuit and open-loop protection
- Optional self-biased supply
- Pin-out simplifies PCB heat sinking
- Hysteretic over-temperature protection
- Input overvoltage line protection
- Extended creepage between DRAIN pin and all other pins improves field reliability
- 725V MOSFET rating series for excellent surge withstand
- EcoSmart™ - Extremely Energy-Efficient