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the functions necessary to implement a supercapacitor based LED flash driver solution

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.

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.

In doing so, Rutronik extends its product range of visible and invisible LEDs. Brtled products combine first-class quality with an attractive price-performance ratio. The product range covers standard LEDs, high power LEDs and ultra high power LEDs as well as standard and customised led high bay light, optocouplers, photodiodes and phototransistors up to infrared transmitters, receivers and receiver modules. Together, Rutronik and Brtled focus in particular on white goods markets such as components and displays for cooker control units with a temperature performance of up to 125°C, general and interior lighting and the consumer, communications and computing industries.

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