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https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1297059/lm25149-q1-why-does-pgood-is-tied-to-vcc-on-the-lm25149-reference-design
https://www.ti.com/lit/ug/snvu773a/snvu773a.pdf?ts = 1701157984911&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FLM25149-Q1
第16页
您好、Li
PGOOD 是开漏输出、可将其上拉至任何逻辑电压电平。
仅在超出稳压范围时才会下拉 PG 引脚。
您不必使用 VCC、您可以使用6.5V ABSMAX 内的任何外部电压。
希望这对您有所帮助。
-奥兰多
