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LM51561-Q1: PGOOD function

Sherry Liang
Genius 10255 points
Part Number: LM51561-Q1

Dear team,

When the FB pin voltage is smaller than Uuvth, PGOOD will go low. If PGOOD is low, how does the output change? Will the output be turned off?

Thanks & Best Regards,

Sherry

  • +1
    TI__Mastermind 46371 points

    Hi Sherry,

    the PGOOD indication is independent from the regulation loop. So the output will not be turned off but the control loop will try to bring back the output to the requested voltage level.

    See also the block diagram in the datasheet in chapter 9.2

    Best regards,

     Stefan