Re: LDO design
In other words:
For load regulation:
Introduce a current square form on the output (with modest frequency) from zero to Imax and look at the output voltage. The maximum voltage variation will give the load regulation.
For line regulation:
Change the voltage source (Vdd or Vin or whatever you call the supply voltage) from Vmin (Vout + Vdrop-out) to a specifical value you like, then measure your output voltage. The line regulation will be:
(delta Vout)/(delta Vin)
These are pretty important characteristics to take into account, specially load regulation because normally you won't have a stable power sinker on a battery supply environment.