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这是我的原理图,输出等于输入电压3.3V。不知道为何会出现这种情况,芯片也换过,R21 R22电阻也改过,也没用。
Hi Yu,
看起来是升压电路没有工作,检查电感,芯片是否有虚焊,尤其是SW,VIN脚的连接是否正常.
这种简单的问题肯定自己找的到,