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Power/Alternative Energy  

Automatic charge reduction (CHR) function solves issues with Li-ion battery charging from USB ports

Posted: 19 Nov 2009     Print Version  Bookmark and Share

Keywords:USB port charging  Li-ion battery charging  battery powered portable 

The convenience of charging single-cell Li-ion battery-powered portable products is a desirable feature that many designer engineers will incorporate into their new devices. Highly integrated portable products—such as cell phones, PDAs, MP3 players and digital still cameras—are powered by single-cell Li-ion batteries, and use a computer's USB port to transfer data files. A USB port provides bidirectional data transfer, as well as power and ground, from the host system. Using a USB port as a charging power source allows a user to simultaneously download or update files and recharge the battery for their portable product.

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