March 30, 2024

National Semiconductor Releases New White LED Driver with Dynamic Backlight Control


National Semiconductor Corp. today introduced the industrys smallest white light-emitting diode (LED) driver with dynamic display backlight control. The LM3530, a member of Nationals PowerWise energy-efficient product family, drives up to 11 high-current LEDs in series, illuminating The LM3530 is offered in a 12-bump micro SMD package measuring just 1.615 mm x 1.215 mm x 0.425 mm.



Nationals LM3530 LED driver employs sophisticated ambient light-sensing algorithms and content-adjustable backlighting to optimize the display, realizing up to a 55 percent power saving over the common practice of driving the backlight at a constant brightness.

In a pair of tests, National compared the energy consumption of a backlight illuminating a 3.5-inch iPod touch display with and without Nationals LM3530 LED driver.

The evaluation was conducted using typical multimedia downloadable material, in this case an episode from a television series and a trailer from a popular movie. Results showed the LM3530 achieved a power savings of 43 percent and 55 percent, respectively, over traditional backlighting. The predominately Darker picture in the movie trailer garnered further power savings because the backlight was reduced more frequently for dark images.

The LM3530 brings power savings to the serial implementation of large display backlighting. For parallel charge pumps, National will offer a product with a similar feature set in October 2009. For more information or to order samples and an evaluation board, visit http:// .

The compact FujiFilm Instax Mini 8 Camera preserves the ease of use and attractive design elements of the existing Instax Mini series. At the same time, the Mini 8 cameras offer new features and enhancements. You will instantly notice a slimmer and lighter body. The Instax Mini 8 is approximately 10 percent smaller than the Mini 7S in volume ratio. It is now even easier for the consumer to carry around an INSTAX with them everywhere. The Fujifilm Instax Mini 8 Camera features automatic exposure measurement. The camera signals the recommended aperture setting with a flashing LED light and the user can manually adjust the dial to the recommended setting. This helps the user capture the perfect photo every time. A High-Key mode is available on the Instax Mini 8 cameras. This mode enables consumers to take brighter pictures with a soft look - perfect for portraits. The viewfinder has also been improved for enhanced subject viewing. 


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