我用官网下载的LM74810 PSPICE 工层demo文件文件,在不该电路情况下,输入VIN和输出VOUT的结果都正常

将负载改为一个恒流源后,VOUT输出就变成了一个负压,这是因为啥啊?

这是输出结果

这是原理图

这是恒流源参数
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