LED operation for the camera flash function in portable

In February 2009, President Obama tasked the Department of Energy with quickening the pace of energy conservation standards for appliances, while continuing to meet legal and statutory deadlines. The announcement, which takes effect in 2012, focuses on General Service Fluorescent Lamps (GSFL), which are commonly found in residential and commercial buildings, and Incandescent Reflector Lamps (IRL), which are commonly used in recessed and track lighting. These fluorescent and incandescent lamps represent approximately 38 and 7 percent of total lighting energy use respectively.

The objective of the solid state lighting activities is to advance state-of-the-art solid-state lighting (SSL) technology and to move those advancements more rapidly to market through a coordinated development of advanced manufacturing techniques. This project will both aid in the development and reduce the first cost of high performance lighting products. Continuing advances can accelerate progress towards creating a U.S.-led market for high efficiency light sources that save more energy, reduce costs, and have less environmental impact than other conventional light sources.

LED driver that enables dual LED operation for the camera flash function in portable, battery-powered multimedia devices. The LM3554, a member of National's PowerWise(R) energy-efficient product family, drives one or two high-current LEDs for flash applications in handheld devices such as mobile phones, smartphones and portable scanners.

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