请教一下,我使用的这个电路图,15V输入,充12.6V锂电池正常。现在的情况是我做了另外一块电路板,想充一节电池(4.2V),我将cell引脚接地,然后电压输入改成5V。调试时出现LED一直闪烁,测试过VREF=3.3V正常,但是SW电压才有2.9V。所以请教一下,这样改原则上可不可以?
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