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求助:LM5116做的降压器输出低

Other Parts Discussed in Thread: LM5116

原理图如附件.这个原理图是Ti网站WEBENCH  Designer设计的,照此制出PCB板,今天通电测试结果是输出电压空载为6.98V,加160欧姆负载时为3.76V.分别改变R5,R7,R10阻值都没有改变,无奈,恭请各位大侠赐教!谢谢!

LM5116.pdf