FB\/PG is a pin, which has different definitions in different models. The output voltage of the four models TPS75733KC, TPS75725KC, TPS75718KC and TPS75715KC is fixed, while the output voltage of TPS75701 is adjustable, so the application of the five pins, FB\/PG, is inconsistent. However, it is clearly stated in the application data manual that the FB\/PG corresponds to different models. In TPS75701, FB is applied, and the voltage regulator output voltage is adjusted by adjusting FB. The other four models, TPS75733KC, TPS75725KC, TPS75718KC, TPS75715KC, are marked as \/PG, this will pull the 5 pins directly to the output can not be used as the output of the two pins, are the feedback pins required by the power supply IC