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LMZ21701频繁烧毁问题咨询

Other Parts Discussed in Thread: LMZ21701

您好,我在一款设计中用到LMZ21701芯片,输出3.3V,设计原理参考芯片手册,但是在使用过程中发现芯片经常烧毁,看到论坛中其他朋友也用到过这个系列的芯片又类似的问题,原因可能是焊接问题导致,请问对LMZ21701这个芯片具体的焊装要求是什么?谢谢。(自己手动焊装一般是先把电感吹掉,把片子焊上去然后再把电感焊到LMZ21701上,感觉是有点不合适)