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TPS73601 adjustable version noise parameter

penghm
Prodigy 200 points

The TPS73601 adjustable version does not have the NR pin available. But the datasheet doesn't tell us the exactly parameter?anyone konws? thank you very much

  • 0
    TI__Expert 8890 points

    Hello,

    The adjustable version of the part uses that NR pin as a feedback pin (FB) to set the level of the output voltage  through a resistor divider.  See Figure 32 and related discussion in the Applications Information section of the data sheet. The basic equation for setting, or adjusting, the output voltage using these resistors is Vfb = Vout [R2/(R1 + R2)]. 

    Because the adjustable part does not make use the noise reduction capacitor it may have slightly higher noise.  See the Output Noise discussion in the Application Information section and especially see Figure 27 to see the effect of adding the Cbyp capacitor in reducing that noise even though the noise reduction pin is not available.

    If this does not help please clarify.

    Regards

    Bill

  • 0 in reply to Bill Stokes
    Prodigy 200 points

    thank you very much