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LM2621 Vout max 10V or 14V?

Mike Score
Expert 3665 points
Other Parts Discussed in Thread: LM2621

LM2621 datasheet claims Vout max of 14V out.  However, it has a 10V max on the BOOT pin, which is the output.  Is the max Vout 14V or 10V, or less?

Thanks.

Mike Score

  • 0
    TI__Mastermind 45250 points

    Mike,

    Maximum Vout for the LM2621 is 14V.

    This is explained in the BOOTSTRAPPING section of the data sheet.

    The output should be connected to Vdd (BOOT) when the output voltage is between 2.5V and 5.0V. Outside this range these pins should be connected to a different supply. The maximum supply voltage that can be used at BOOT is 10V.

    If you do a design in WEBENCH they will show an external 5V supply used. I have attached a WEBENCH design to show this:

    7382.webench_design_1231138_127[1].pdf

    Please let me know if you have any further questions.

    Richard Elmquist