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BQ24040的充电 问题

Other Parts Discussed in Thread: BQ24040

 Hi,BQ24040给锂电池充电,ISET电阻用的是549欧姆,ISET2接地,现在充电电流只有100mA,并且我测试将ISET2拉高,电流是150mA,浮空是100mA,将ISET电阻调为1K后,电流还是100mA,ISET电阻根本就没有起作用,什么原因呢?请帮助,谢谢