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LMR23630: Regarding the meaning of the wake-up threshold.

Kyohei
Expert 1440 points
Part Number: LMR23630

Tool/software:

Hi team,

I have two questions regarding the wake-up threshold for ENABLE.

  1. Is my understanding correct that the wake-up threshold means the system will not enter the wake-up state if the voltage falls below the minimum value of 0.4V, and it will enter the wake-up state if a voltage of 0.4V or higher is applied?

  2. Is my understanding correct that when the system enters the wake-up state, the internal LDO will start operating even if the device is not in the ENABLE state?

Best regards,

Kyohei

  • 0
    TI__Expert 5795 points

    Hello,

    Yes, your understanding is correct. Wake-up threshold means the system will not enter the wake-up state if the voltage falls below the minimum value of 0.4V, and it will enter the wake-up state if a voltage of 0.4V or higher is applied. 

    Vwake doesn't mean it enables the device, it means when EN voltage is above Vwave, the device will have some internal activities which has a current sink and thus power loss even if the device is not enabled. 

    Only when you care much about shutdown current you should take care of this.

    Thanks and regards,