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LM3670 - output accuracy

Leon Sae-Ung
Expert 5460 points
Other Parts Discussed in Thread: LM3670

Hello,

on page 4 we can see the accuracy depending on the output voltage for LM3670.

I do not see why for the 3.3Vout we see -6% max whereas for the other output values the accuracy is closer to -4% or -4.5%. Could you please help to understand?

Thanks!

  • 0
    TI__Genius 11490 points

    I have forwarded it to the MDP engineer for support.

  • 0
    TI__Intellectual 1955 points

    Hi Leon, unfortunately this may be associated with "mask" option. That is when mask(s) are changed to realize another voltage option it may involve the feedback resistor hookup, compensation components hookup, and possible other current and voltage protection circuit change that occasionally results in layout or parasitic issue that impacts the accuracy as later validated during device characterization.  Hope that helps explain some potential culprit involved.  Regards, Kern