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LM61460: Enable and Vcc relationship

Part Number: LM61460

Tool/software:

Hello,

We have the poor connection at the Enable pin.

When enable voltage drop to 0.98V, it triggers Vcc to rise up 4.7V and Vout shutdown.

I would like to ask about the relationship between Enable and Vcc? Why do they affect each other?

Test condition : no load , Vin=8V

  

Thank you!

Best Regards,

YuFang