The LT3799 offers over 90% efficiency, eliminating the need for external heat sinking of the LED driver IC in most applications. Special internal circuitry provides an active PFC of up to 0.977, easily meeting industrial Department of Energy (DOE) requirements; also complying with the IEC 61000-3-2 Class C Lighting Equipment Harmonics requirement. A wide input voltage range allows the LT3799 to operate with offline inputs from 90VAC to 265VAC in a single design. Typically using only thirty five external components to create a 20W LED (160W equivalent) lamp, this results in a very compact solution footprint, requiring a space of less than 35mm x 70mm. Similar solutions are available for LED applications ranging from 4W to over 100W. The LT3799 can be used with a standard in-wall TRIAC dimmer without visible flicker. Open and shorted LED protection ensures long-term reliability for a wide range of LED applications.