> if the load is > Iq then no more will be absorbed? i.e. it will > still draw 20mA? You'll have to consider the regulator as a circuit on its own that needs current to operate, no matter what current is passing to the load. The regulator will be more or less efficient for various input-output differentials but Iq is always additional to Iload. A modern SMPS IC generally has a much lower Iq because the output current is supplied on demand by a digital circuit Joe --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .