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

NCP1840 extends battery life, offers programmable logarithmic brightness control, and greater blinking flexibility for industrial, computing and consumer applications

NCP1840 Multi-Channel LED Driver image.

PHOENIX, Ariz. Oct. 31, 2011 – 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.  

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°C to +85°C.  The NCP1840 is priced at $0.94 per unit in 1,000 unit quantities.

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

Twitter@onsemi_jpをフォローしてください。

オン・セミコンダクターについて
オン・セミコンダクター(Nasdaq: ONNN)は、グローバルな省エネルギー実現のためデザインエンジニアを強化し、エネルギー効率のイノベーションをリードしてまいります。オン・セミコンダクターのエネルギー効率の高い、パワー&信号制御、ロジック、ディスクリートおよびカスタム・ソリューションの包括的なポートフォリオは、自動車、通信、コンピューティング、民生機器、産業用機器、LED 照明、医療機器、軍事/航空宇宙および電源アプリケーションにおける特有な設計上の課題を解決します。オン・セミコンダクターは、北米、ヨーロッパ、およびアジア太平洋地域の主要市場で、対応力、信頼性に優れた、世界クラスのサプライ・チェーンと品質保証体制、および製造工場、営業所、デザイン・センターのネットワークを稼働させています。詳細については、http://www.onsemi.jpをご覧ください。

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