Tool/software:
Hello -
I am trying to double check my resistor values for the UVLO by using R4/R5 as shown below:
For my application I am trying to do VIN = 24V, V Start =14V , V Stop = 12V. When I calculate R4 and R5 in excel using the above formulae, I end up with R4 = 1.056Mohm and R5 = 95Kohm approx.
Then I am trying to check Ven as 24V - 24V*1.056M/(1.056M+95K) using a basic ohms law calculation. But I end up with Ven 1.158V when Vin = 14V and Ven 0.993V when Vin = 12V, which is pretty far off the 1.19 and 1.22 V we are looking for.
I also tried accounting for the 0.7uA current into the Ven pin (per data sheet), but it's still not adding up to Venfalling or Venrising at the 12V and 14V input values. Could you please help me in what I am missing for this double check calculation?
Thank you
Leon
