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关于LM5110-3SD带载后电压被拉低的问题



原理图如下,

 在使用5110过程中,发现后级带PIN开关电压会降低,一个PIN开关的电流是25mA,测试数据如下

想问一下,各位工程师这是什么原因造成的,或是说我的用法存在问题