原理图如上,外围电路什么都没接的情况下给ref供2.5v电压,电流20ma以上,2.5v和5v同时供的情况下,工作一会以后2.5v工作电流会跳变
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原理图如上,外围电路什么都没接的情况下给ref供2.5v电压,电流20ma以上,2.5v和5v同时供的情况下,工作一会以后2.5v工作电流会跳变