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WEBENCH® Tools/LMZ31710: discrepancy Rset between WEBENCH and datasheet

phil chabot
Prodigy 110 points
Part Number: LMZ31710

Tool/software: WEBENCH® Design Tools

Hi,

I noticed a discrepancy for Rset between the datasheet and the WEBENCH design, for instance:

for Vout=1.8V,  datasheet Rset=715  but WEBENCH Rset=732

for Vout=3.3V datasheet Rset=316 but Webench Rset=309

why the discrepancy ? and which one is correct ?

thanks

phil

  • 0
    TI__Guru 50120 points
    Hi Phil,

    Thank you for bringing this to my attention. The datasheet Rset values are correct and follow Equation 1 for output voltage selection. Also 316Ohms and 715Ohms are common 1% resistor values too. I will be in contact with the Webench team to correct this discrepancy.

    Regards,
    Jimmy