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LM76003: Eff. vs Output Current curve

chentsu chung
Mastermind 6180 points
Part Number: LM76003

Hi Sir,

This chart is from datashhet page 1., but I can't find any same curve from 8.2.3 Application Curves, what's the testing condition of the chart?

  • 0
    TI__Genius 11085 points
    As stated on the title, these curves were taken with Vout = 5V, fsw=500kHz, Auto mode setting, 25C. Three Vins shown in the legend, load current is at the x-axis and efficiency at the y-axis.

    -Yang
  • 0 in reply to YangZhang
    Mastermind 6180 points

    Hi YangZhang,

    I know that, I think you didn't look into my question, what I want to know is, why I can't find any curve in 8.2.3 Application Curves same with the chart.

    The same tsting condition, but datasheet have two different curve?

  • 0 in reply to chentsu chung
    TI__Genius 11085 points
    I've talked to the engineer in charge of this part. The data set for the front page curve is the same as the one in the Application Curves session. They were plotted differently. The one in the Application Curves session has been smoothed by the plotter to remove the bumps due to measurement tolerances. The range was slightly different as well. But they were from the same set of data.

    -Yang