LYTSwitch-4 series High Power LED Driver AC-DC ConvertersThe Power Integrations LYTSwitch-4 family of off-line AC-DC single-stage converters are designed for high-power LED driver applications. They integrate control and drive circuits and power factor correction in a single package and are available in both dimming and non-dimming versions.• High line voltage operation: 160-308 Vac• Better than ±5% constant current regulation• Up to 92% efficiency in typical applications• High power factor >,0.9• Easily meets EN61000-3-2• Less than 10% THD in optimized designs• 132 kHz switching frequency permits use of small low-cost magnetics• No primary side aluminium electrolytic bulk capacitors requiredLTY432x types only:• TRIAC dimmable to less than 5% of full output• Fast start-up: <,250 ms at full brightness, <,1s at 10% brightnessAC-DC Converters, Power Integrations