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LM2733 40V output

K. Sasaki14
Guru 10200 points
Other Parts Discussed in Thread: LM2733

There are 40V output garaph in LM2733 datasheet.
However LM2733 SW pin maximum rating is 40V. I think SW pin becomes greater than 40V when output voltage is 40V.
Is this no problem?

Best Regards,
Kohei Sasaki

  • 0
    TI__Intellectual 1775 points

    Hi Kohei Sasaki,

    You are correct, with a 40V output, the switch node will experience voltages higher than 40V.

    The Vout=40V curves show the behavior at the extreme range of operation but it is not a practical level that can be used for applications as the behavior of the part is not guaranteed over production, temperature and lifetime when absmax values are exceeded.

    Best Regards,

    Florent Boico