我用LM25085设计了一个电路,要求输入电压为12V,输出电压为3.5V,当电路板焊好了的时候,发现输出的电压只比输入电压小零点几伏,这是怎么回事呀,附上电路图如下:
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我用LM25085设计了一个电路,要求输入电压为12V,输出电压为3.5V,当电路板焊好了的时候,发现输出的电压只比输入电压小零点几伏,这是怎么回事呀,附上电路图如下: