Max/Min Range Cell Value in Excel

Hello- Thx in advance for the help.

Is there an elegant way to create a maximum calculation range in excel. I'll try to setup an example:

- Lets say Cell A5 calculates out to 30 (say the formula is =SUM(A1:A4)
- But I'd like to have A5 value to be a minimum of 15 or a maximum of 25
- Thus, in this example, A5 should be 25 (since A5's sum value is greater than 25)
- But if A5's Sum value was 10, then it would show a value of 15
- In otherwords, the values need to have a min and max (given range)

I tried to play with nested if/then and Min/Max, but wasn't able to get it to do what I wanted.

Any ideas? Hope I explained it ok.

Thx!