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TLV759P: About the constant setting of TLV75901PDRVR

Kaji@PAN
Mastermind 7830 points
Part Number: TLV759P


Hi,

What are the recommended constants for R1, R2, and Cff when setting the output voltage to 4.9V or 4.3V?
Looking at the datasheet, it seems that PSRR improves with Cff, so I would like to use Cff.

Best regards,

  • 0
    TI__Guru 50190 points

    Hi Kaji-san,

    Common values for R1/R2 for 4.9V could be 100K/12.6K, and for 4.3V maybe 100K/14.7K. These easily meet the recommendation to ensure that R1+R2<VOUT/(IFB*100).

    For CFF we have the following chart in the datasheet:

    Making CFF larger than 100nF will not really improve PSRR further. 

    I hope this answers your question.