Controlling your World the Easy Way

in other words if i draw 4 ma on the 5 volt side i'll draw 4ma on the 3 volt side. if i'm right i should use some sort of buffer if i wish to draw more than 4 ma, any recommendations?

what are the current lmits on the Ls1?

I noticed on the board I receved that the area is not blocked out and the 3v and gnd pin are unpopulated, Does this mean that the Vin and gnd whitch are populated are ok?