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BQ24103ARHLR datasheet equation error ?

Steve W1
Prodigy 100 points

On the example on page 25 of the datasheet, I am trying to follow the calculation of RT2 but come up with a negative number ... is there an error in the equation ?

-Steve

  • 0
    TI__Mastermind 31120 points

    No, you just ran out of temperature range.  As one narrows the operation window RT2 gets larger. At a certain point it turns negative and that implies you need a negative resistor or so source curent instead of sinking it.

    If you want that lower high temperature setting then you have to sacrifice the lower temp threshold.