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ref3230输出电压仅有2.01V-2.67V

Other Parts Discussed in Thread: REF3230

购买了10片REF3230AIDBVT,表面丝印R320,电路板输入电压5V,电路如下图所示。

现象:

1号板:3230输出电压2.67V,并且上下浮动不稳定

2号板:3230输出电压2.45V,并且上下浮动不稳定

3号板:3230输出电压2.01V,并且上下浮动不稳定

将输出负载R13和R17去掉,未发生任何变化。

提问:是否该批次芯片有问题?