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LED Driver

Photonics Spectra
Oct 2009
National SemiconductorRequest Info
 
National Semiconductor Corp. has extended its product line to include the LM3530 LED driver, a white light-emitting diode driver with display backlight control. The device drives up to 11 high-current LEDs in series, illuminating larger displays in portable media devices, including smartphones. It employs sophisticated ambient light-sensing algorithms and content-adjustable backlighting to optimize the display, saving up to 55% compared to when the backlight is driven at constant brightness. It also features a 1000:1 dimming ratio and 90% efficiency.


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GLOSSARY
backlighting
The forming of a clear silhouette of an object by placing a light source behind it. Used in machine vision when surface features of an object are not important.
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