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LT3045

Hello;

The Rset value caulculation is so easy but i can not understand how to calculate RPG2 and RPG1 values, i guess RPG1 is almost always 49.9K but RPG2 is 402k for 3v out, 453k for 3.3v out 700k for 5v out. What is the calculation logic or formula here?

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