I suspect they used 1V, but they do seem to be going for "pretty pictures" over "hard data" (they didn't even label the sub-graphs (a), (b), (c), and (d)!).
I think it accentuates any resonances they find, by an amount that could be significant (e.g., easily 10x) depending on how "low" their "low impedance power supply" model is.
Thanks for your input John... I think that particular paper can probably be put in the "not so useful" pile.
LM1117 in dpak.
John
Natilnal calls the TO-252 D-pak. Also I don't know it the LM1117 qualifies as a real LDO because it has an NPN pass transistor.
robert
I call it an MDO. It has an emitter follower output stage, which gives it an inherently low output impedance and the sort of ESR stability margin the LM317 is noted for. If you have the 0.7 volts to spare, it's a good deal. It's also useful as a power amp, driving the adjust pin with an opamp or whatever. I've tested it in that mode, especially as regards ruggedness under unusual conditions, and it's almost indestructable.
The tab is the output, so you can heat sink it to the output power plane.
John
It comes in SOT-223 and the DD. Why not just use the DD?
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