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LMR14020问题咨询

Other Parts Discussed in Thread: LMR16030, LMR14020

   有个项目使用LMR14020SDDAR(将LMR16030PDDAR更换成P2P的LMR14020SDDAR) ,按规格书FB公式计算,输出电压应该是4.22V,但我们实测确是4.38V,下图是我们的原理图,请问是什么原因导致的呢?