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BQ25606 電池充到4V後的充電問題

Other Parts Discussed in Thread: BQ25606

Ti 工程師您好

輸入:9V,BQ25606的ILIN設定1A,ICHG設定1.8A,Vset設定4.2V,使用鋰電池(3.2V沒電狀態)充電時,過程中3.2V~3.9V都是1.8A在充電,但是當充到4V時,IC就開始控制充一小段時間接著不充一段時間,以此類推至電池達到4.2V,請問此現象有辦法避免嗎?它的工作原理又為何?