Li-ion Battery Charger for Mobile phone by TL431

This is a simple to build charger for single 3.7V lipo battery. The heart of the charger is TL431 shunt regulator that controls the incoming current. Charger comes with a convenient charging LED indicator. As charging current goes down so does the intensity of the LED.

Read More Source:
http://www.belza.cz/charge/liich.htm
Thank you.

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Li-ion Battery Charger for Mobile phone by TL431