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Driving LEDs: To Cap or Not to Cap
National Semiconductor
Description
LED lighting requires a constant-current source to take advantage of the output and color. The benefit of using a buck converter is how easily it can be turned into a constant-current source. Read about selecting, or possibly exclusing, an output capacitor when designing a buck regulator for constant-current drive of HB LEDs.
Company Overview
National Semiconductor creates energy-efficient analog and mixed-signal semiconductors as well as SolarMagicT power optimizers. Its PowerWise® products enable systems that consume less power, extend battery life, and generate less heat. National's leading-edge products include power management circuits, display drivers, audio and operational amplifiers, communication interface products and data conversion solutions. Headquartered in Santa Clara, Calif., National reported sales of $1.46 billion for fiscal 2009 which ended May 31, 2009
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