Difference B/w LTxxx Ics and Lmvxx Ics
There might be a few numbers that indicated a similar IC, but otherwise they are completely independent numbers and have no relationship to each other. Early on 30+ years ago there may have been some number sharing, but if that did occur it was usually in the form of everyone having the same number (like the OP27) and sometimes a different suffix. If you want to learn about the numbers the best way to do this is through the manufacturers websites. The numbers also have very little to do with what it is, and LT1763 is an LDO an LT1867 is an OP Amp