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PREMA Semiconductor GmbH Robert-Bosch-Str. 6 55129 Mainz, Germany https://www.prema.com
Contact Ms Dipl.-Ing. Anne Stroot +49 6131 5062202
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PREMA Semiconductor GmbH

0.9V-White LED Driver -Only One External Component Required

(PresseBox) (Mainz, )
The core of the new driver PR4401 consists of a step-up converter with current output, that provides an output voltage of typically 3.6V for white LEDs. The input voltage can be as low as 0.9V, thus allowing a single cell battery operation.

Only one external component, an inductor, is required to operate up to three LEDs in series. A regulated current of up to 23mA depending on the inductor value provides a constant LED brightness independent of the supply voltage. The PR4401 offers a high efficiency of about 80% over the whole supply voltage range from 0.9V up to
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