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LM25085 按照参考电路做的PCB没有输出?

Other Parts Discussed in Thread: LM25085

大家好, 求助,LM25085 按照官方参考手册的电路设计的PCB 实际做出来没有输出,12V输入,通电后电流有0.04A, 没有负载.求指导