Smart LED driver IC meets space, dimming needs

Smart LED driver IC meets space, dimming needs

The FL7701 smart nonisolated buck LED driver provides the circuitry to meet the space and dimming requirements of LED lighting for residential applications. It provides power factor correction and uses a digital technique to automatically detect the ac-input voltage condition. It also works from a dc-input voltage condition and automatically senses ac versus dc input voltage conditions. The device does not use a transformer and can be connected directly to a dc or ac off-line input.

The buck LED driver provides designers up to 20% lower bill of material costs and up to 60% board space savings over competing designs. It provides a solution suitable for the PCB sizes found in LED residential lighting applications and supports analog dimming. No electrolytic capacitors are required for the input, output, or the VDD supply. It features a power efficiency >90% and is available in an SOP-8 package. It suits interior decorating/ornamental lights; LED light bulbs; or down lights in PAR, Reflector, MR, E26/E27 or bi-pin base types, as well as LED lamps for low power lighting fixtures. ($1.27 ea/1,000 — available now.)

By Paul O’Shea

Fairchild Semiconductor , South Portland , ME
Sales 207-775-8100
www.fairchildsemi.com