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ON Semiconductor Introduces High Performance Multi-Channel LED Driver with Serial Interface for Easy Programming

Dépèche transmise le 31 octobre 2011 par Business Wire

PHOENIX--(BUSINESS WIRE)--ON Semiconductor (Nasdaq: ONNN), a premier supplier of high performance silicon solutions for energy efficient electronics, today announced the introduction of the NCP1840, a multi-LED driver with the ability to drive up to eight LEDs independently, using any illumination pattern the user creates. The NCP1840 is ideal for multi-LED status indicators that communicate status and diagnostic conditions to the user, and can help differentiate an end product via LED animation.

“This device helps OEMs cost-effectively use dynamic LED illumination to communicate product status, diagnostic feedback, and to differentiate their products in increasingly competitive environments.”

By utilizing the NCP1840, engineers can offload some of the work normally handled by the processor in their system design, as it no longer needs to directly control each individual LED. Current and dimming level programming is conveniently done by writing to and reading registers via a serial interface that uniformly controls the brightness and blink rate of each LED. LED brightness levels can be controlled logarithmically — rather than linearly — to accommodate natural eye viewing with no brightness distortion.

The device is well suited for portable applications due to its ability to extend battery life by using a high efficiency, low noise, quad-mode charge pump. The charge pump and constant current regulators maintain forward LED voltage and active operation despite swings in input voltage. The NCP1840 also saves on space by requiring only five small ceramic capacitors and one resistor to form a complete LED power supply and current controller.

“The NCP1840 sets itself apart from other high end LED drivers, thanks to the variety of innovative features it incorporates, so that engineering teams are not faced with having to compromise on design concepts,” said Ryan Cameron, vice president of Custom Industrial and Timing Products at ON Semiconductor. “This device helps OEMs cost-effectively use dynamic LED illumination to communicate product status, diagnostic feedback, and to differentiate their products in increasingly competitive environments.”

Ideal for applications in the industrial, computing and consumer end markets, the device is offered in a Pb-free, RoHS compliant 4 mm x 4 mm QFN-20 package, and supports an operating temperature range of -40 ⁰C to +85 ⁰C. The NCP1840 is priced at $0.94 per unit in 1,000 unit quantities.

For more information, please visit http://www.onsemi.com.

About ON Semiconductor

ON Semiconductor (Nasdaq: ONNN) is a premier supplier of high performance silicon solutions for energy efficient electronics. The company's broad portfolio of power and signal management, logic, discrete and custom devices helps customers efficiently solve their design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power applications. ON Semiconductor operates a world-class, value-added supply chain and a network of manufacturing facilities, sales offices and design centers in key markets throughout North America, Europe, and the Asia Pacific regions. For more information, visit http://www.onsemi.com

ON Semiconductor and the ON Semiconductor logo are registered trademarks of Semiconductor Components Industries, LLC. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders. Although the company references its Web site in this news release, such information on the Web site is not to be incorporated herein.