我用TLV61220来给一节18650升压至5V,原理图如上图所示。电感采用的是标示4R7的4.7uF贴片电感,电容是0603贴片电容,R3用的是910k 0603贴片电阻。这部分电路第一次上电时输出电压时4.16V,我觉得可能是电阻有缺陷,换了个电阻之后再次上电,芯片就冒烟了。请问我接下来应该怎么办?我已经完全不知道哪里可能会有问题了。
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