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CMOS Li-Ion battery charger

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rfcn

rfcn

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How to make sure the CMOS Li-Ion battery charger has an output voltage accuracy as <1%?
 

Pls be care with the voltage sensing for Star connection in your charger.
 

rfcn said:
How to make sure the CMOS Li-Ion battery charger has an output voltage accuracy as <1%?
Click to expand...

You'll need an (at least) appropriately accurate bandGap + digital trimming, e.g. with a 4-to-5-bit R-2R DAC .
 
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