LED Flash Driver uses supercapacitor technology.

Press Release Summary:

RoHS-compliant XRP6840 combines and manages all functions necessary to implement supercapacitor-based LED flash driver solution. Delivering up to 4.3 A flash pulse suited for high resolution mobile phone and standalone digital cameras, I²C-programmable device comes in 2- and 3-channel versions and supports up to 600 mA constant charging current. It is built around tri-mode charge pump architecture and operates at 2.4 MHz. Inrush current control and device protection circuitry are standard.

Original Press Release:

Exar Releases Industry's Highest Intensity Supercapacitor LED Flash Driver

The XRP6840 - up to 4.3Amps - Extends the Reach of LED-Based Flash Solutions into Leading-Edge Consumer Applications

FREMONT, Calif. -- Exar Corporation (NASDAQ:EXAR) unveiled today the XRP6840, the industry's highest intensity LED flash driver with full management of supercapacitor based flash technology. The XRP6840 delivers up to 4.3Amps flash pulse which is ideal for high resolution mobile phone cameras and standalone digital cameras.

"The XRP6840 is the best-in-class driver for applications that require supercapacitor technology," said Eric Pittana, director of marketing, Power Product Line. "It is easy to use, highly programmable and cost effective for high intensity LED flash applications. Exar is at the forefront of this emerging technology offering an innovative solution with virtually no external components."

Increased resolution in camera phones and standalone digital cameras requires a high intensity LED flash current beyond the capabilities of standard lithium-ion batteries. The XRP6840 alleviates such peak current requirements by constantly sourcing a low controlled current from the system's battery to charge a supercapacitor which in turn provides the power for peak load functions. Charging and discharging parameters of the supercapacitor are completely managed by the XRP6840 and fully programmable via an industry standard I2C interface. The XRP6840 supports high peak current functions in battery operated portable systems while significantly increasing battery life.

Key Product Features

The XRP6840 combines and manages in a single device all the functions necessary to implement a supercapacitor based LED flash driver solution. Supporting programmable current in torch and flash modes, the device comes in both two and three channel versions for increased design flexibility and supports up to 600mA of constant charging current. Built around tri-mode charge pump architecture and operating at 2.4MHz, the XRP6840 provides inrush current control and device protection circuitry while a standard I2C interface provides a seamless integration into any system.

Power Management Products

Highly reliable, accurate, power management is a critical part of any technology system. Exar has a broad array of high-performance and industry-proven power management solutions including handset and lighting controls, power conversion, and standard linear devices.

Prices, Packages, Availability and Additional Information

The XRP6840 is available now in volume quantities in both two and three channel configurations. Both versions are offered in a RoHS compliant, halogen free 20-pin thin QFN package. Pricing starts at $1.09 for 1K units.

Additional information on this product can be found at

Additional information on Exar's other LED Drivers can be found at

About Exar

Exar Corporation delivers highly differentiated silicon, software and subsystem solutions for industrial, datacom and storage applications. For nearly 40 years, Exar's comprehensive knowledge of end-user markets along with the underlying analog, mixed signal and digital technology has enabled innovative solutions that meet the needs of the evolving connected world. Exar's product portfolio includes power management and interface components, communications products, storage optimization solutions, network security and applied service processors. Exar has locations worldwide providing real-time customer support to drive rapid product development. For more information about Exar, visit: http://www.exar.com/.

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