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https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1498184/tl431-support-pin
工具/软件：
您好的团队、
您能告诉我支持引脚的功能是什么吗？
它是连接到阳极、阴极还是 Ref？ 它是否漂浮在空气中？
此致、
Hayashi
Hi Hayashi,
感谢您的提问！
有关支持引脚的更多信息、请参阅以下链接：
https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1202123/faq-why-do-some-sot-package-parts-from-ti-have-a-pin-that-is-not-in-the-mechanical-drawing
我希望这对您有所帮助！
Andrew Li
