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Original question:

TPS27S100: Internal Bandgap Voltage

TPS27S100: I out explanation in external current limit calculation

Sooraj P
Prodigy 90 points
Part Number: TPS27S100

Tool/software:

Hi

what is I(out) in the equation? is it the external current limit value or the maximum output current?  

I want to limit current to 1.88 A, and am taking VIILM(th)=1.233, KILIM(th)=2000, as per the datasheet and Iout as 1.88A , is this calculation correct ?

  • 0
    TI__Mastermind 34935 points

    Sooraj,

    IOUT is the current limit. In the case of a 1.88A current limit, you would want a 1.3k resistor (rounded for standard 1% values).

    You also should account for the accuracies of the current limit. Using your 1.88A current limit, I ran the following calculations:

    Best Regards,
    Tim