SNVSB28 December 2017 LM25575-Q1
R5 and R6 set the output voltage level, the ratio of these resistors is calculated from Equation 10:
For a 5 V output, the R5 and R6 ratio calculates to 3.082. The resistors should be chosen from standard value resistors, a good starting point is selection in the range of 1.0 kΩ - 10 kΩ. Values of 5.11 kΩ for R5, and 1.65 kΩ for R6 were selected.