Hi I need to know what is the L200C maximum current. The datasheet says it's internally limited. Am not quite sure what this means.
It's in the data sheet (page 4) - peak short circuit current is 3.6 A, with pins 2 and 5 shorted. It'll probably go into thermal shutdown if you try it, unless it has a large heatsink.
On the first page of the data sheet, it is said that it has adjustable current up to 2 A.
Another very important thing is note 1 on the page 4. It says that up to 2 A can be provided if the difference between input and output is less than 20 V (this came back and bit me couple of times).
Figure 3 on page 4 also provides interesting information. It shows relation between voltage difference, junction temperature and output current.