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TPS50601A-SP: Calculating UVLO from datasheet

Matty13763
Intellectual 440 points
Part Number: TPS50601A-SP

Hi,

On p.25 of the datasheet ,it calculates the values for R1 and R2 for the UVLO set point. On table 4 it lists the Vstart = 4.5 and Vstop = 4.3V

From the equations listed on p.16 and p.17, I didn't calculate the R1=10K and R2= 3.4K as they did for their calculation. I got R1=25.8K and 8.36K

Here is a copy of the equation from p.16 and p.17.

Can anyone see what I am doing wrong?

Thanks,

Jeff

  • +1
    TI__Genius 14540 points

    Hi Jeff,

    I don't think you are doing anything wrong.  I verified your results using the published calculator in the product folder.  10K/3.4K yields Vstart = 4.432 and Vstop=4.284.  It seems the datasheet has an error and I will make a note to have this corrected upon the next datasheet revision. Thanks for the feedback.

    Christian