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将24V通过78M05稳压输出5V至TPS79301，输出电压理论应该是3.3V但是上电后电压一直掉到0V而且78M5发热很严重，求哪位大侠指导？
亲；你的电路是咋接的？78M05输出几伏？
你好，怀疑是TPS79301的问题，你可以用电源给TPS79301供电试试看，请检查焊接和芯片质量，谢谢。
你的负载是多大？怀疑短路了。
