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LiIon charger question.
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Please be positive and constructive with your questions and comments.

LiIon charger question.

by Earendil on Fri Mar 23, 2007 4:15 pm

The MAX1555 (and MAX1811 for that part) charge the batteries with up to 4.2 volts, a voltage which is distributed to all components of the player. According to the VS1001 and VS1011 datasheet, the absolute maximum voltage that may be supplied to it is 3.6 volt.

Is it really still ok to feed it with 4.2 volts, or am I missing something? I have a feeling I do... :? Especially as this design seems to be used for most DIY mp3 players out there.
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by adafruit on Fri Mar 23, 2007 7:09 pm

i wouldnt feed it 4.2V. use a 3.3v regulator!

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by Earendil on Mon Mar 26, 2007 7:54 am

Thanks for your advice! I found some really low-dropout regulators, one of which I will probably choose for my design.
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Please be positive and constructive with your questions and comments.