Part Number:BQ24045
条件设置:120mAh 锂电池 充电电流设置为:120mA,R_ISET = 4.7KΩ,R_PRE-TERM = 2KΩ
现象:用1C锂电池充电,充电到4.2V以上,一直处于涓流状态,冲了24小时以上充电指示灯CHG红灯一直常亮
需要协助分析原因
Star Xu:
您好,是否方便提供电路图,您的充电电源是多少。
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Chen Colin:
原理图如图,充电电源为USB充电,其中电阻阻值R_ISET = 4.7KΩ,R_PRE-TERM = 2KΩ
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Star Xu:
您好,正在查看电路,稍后回复。
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Star Xu:
您好, 电路看起来没有问题.
BQ2404X family of devices has TTDM mode which will disable termination if TS is open. R1 (10k) is installed ?
What is voltage at ISET during this time, indication of current going to battery?