The Device Comparison table (p. 3) of the datasheet lists "Load Regulation 10% to 100% Load" for the '0515D as 11 typical / 20 max, with a note that this value is "Load regulation = (VOUT at 10% load – VOUT at 100%)/VOUT at 75% load". I assume these values are percentages, i.e., for a "typical" item with 15V output at 7% load the output may vary by 3V worst-case over the listed load range, one with the minimum allowed V[NOM] = 14.25V may have a worst-case swing of 2.85V and one with the maximum V[NOM] = 15.75V may have a worst-case swing of 3.15V.
This seems to contradict with the Electrical Characteristics table on p. 6, which, under "Line Regulation" says that for at least 10% load and allowed input voltage, the output voltage can vary by up to 15%, with a typical variance of 1%.
And then a third piece of information, Figure 6-14 purports to show a "typical" voltage vs. load curve, and the stated (10% to 100%) load range runs from what looks like around 11.3V to just under 16V. I understand that this is an example, not to be taken as a specification in itself, but 11.3 V is quite a bit lower than the 12.75 V lower limit that the Electrical Characteristics table suggests, and a bit lower than even the Device Comparison table's values would allow (if 75% load and 100% load both gave 14.25V, the 20% worst-case voltage swing would put 10% load at 11.4V).
If I I could get some clarity on precisely what the possible output voltages are so that I can figure out whether it is within spec for my design, that would be great. If there's other information (such as a tighter voltage spec over a tighter range of loads), that would also be useful to know.
