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TL431: 电路TINA仿真与应用手册结果不一致

Part Number: TL431

您好,我在学习TL431时发现应用手册SLVA987A《Using the TL431 for Undervoltage and Overvoltage Detection》中给出了这样的电路和结果

我在TINA中利用spice模型搭建了此电路,发现结果和手册不太一致。按照上面文档,REF引脚电流在Vin超过2.5V后可能达到10mA,导致Vref上升缓慢且基本维持2.5V。但我的电路在Vin=5V时,Iref=4.15uA,Vref=4.98V,请问是什么原因,谢谢