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TPS720-Q1: Load regulation-seems huge pls explain

Intellectual 590 points

Replies: 2

Views: 51

Part Number: TPS720-Q1

Hi TI,

Please find the attached image. It is from TPS72028QDRVRQ1 datasheet. What my question is, why minimal current change huge voltage change is occurred?? ie,) If  output current changed to 1mA to 1.7mA means the voltage changed from 1.8V to 1.64V. This is very huge for this small current change. Is my understanding correct ?? 

Thanks,

Vignesh.M

  • Hi Vignesh,

    The intent of this plot is to show the load regulation when Vin is floating.
    Under normal circumstances you would never float the input pin.
    This device can regulate Vout with very small amounts of current load from the Bias pin alone.

    When Vin is not floating, but is applied to the input supply, here is the load regulation data for this component.

    Thanks,

    - Stephen

  • In reply to Stephen Ziel:

    Thanks Stephen.

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