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TPS7A47: Input Voltage accuracy information in datasheet

Haritha Munnangi
Intellectual 260 points
Part Number: TPS7A47

Tool/software:

Hi,

I'm using DC setpoint 2.5% accuracy regulators feeding to TI IC (P/N: TPS7A4701RGW), is that accuracy, OK?

Which parameters need to look, can you please confirm where the input voltage accuracy information is in datasheet.

Thanks in advance.

Regards

Haritha

  • 0
    TI__Expert 5300 points

    Hello Haritha,

    This accuracy is fine. Please look at the line regulation specification to see how much the output may deviate if variations on input are expected. If the variation is not dynamic, please look at the dropout voltage at your operating condition to ensure that the input voltage at its lowest point doesn't force the LDO into dropout.

    In section 8.2.1 of the datasheet, a design case with 10% accuracy on input voltage is considered. I suggest looking closely at the detailed design procedure in the subsequent sections to get a better understanding of how input accuracy affects design choices for this LDO.

    Best regards

    Ishaan