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Lithium battery quick charger composed of LM3420-8.4

2014-11-06 17:08  
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Lithium battery quick charger composed of LM3420-8.4
This circuit adopted the specialized lithium battery charger LM3420-8.4 and it’s simple and have high performance and can charges two lithium batteries quickly. When the charging voltage reaches the rated value (with a single lithium battery it’s 4.2V), the charging current drops down to avoid permanent damage of lithium battery caused by overvoltage.