LM2733: LM2733 R2 set

R1 and R2 form a voltage divider that sets the output voltage. It is recommended to start with R2 = 13.3 k so that he divider current is approximately 92 uA. Using a larger or smaller value will change the current. After r2 is fixed, you can calculate the required value for R1 using equation 2 in the datasheet. I do not support LM2733 directly, but I cannot see any reason why R2 value could not be adjusted slightly larger or smaller. For other converters i often use 10 k as the value for the lower resistor divider. To be absolutely safe, it is always best to follow the datasheet recommndation of 13.3 k.