Tool/software: WEBENCH® Design Tools
Looking at solutions for 3.3V converters on Webench using the TLV62569, I notice a discrepancy in the resistor ratios for the available solutions. The TLV62569, TLV62569P-DRL, and TLV62569P-DDC all show feedback dividers of 442k/105k. This gives a ratio of 4.209:1, which with the stated 0.6V Vfb from the datasheet, gives an output voltage of 3.12V. I don't see any mention in the datasheet of a Vfb bias current that would account for this discrepancy, and in fact the example application in the datasheet for 1.8V output shows a divider of 200k/100k.
Webench solutions for the TLV62569A-DRL and TLV62569AP-DRL show dividers of 453k/100k, which give a ratio of 4.5:1, which makes sense for 0.6V reference and a 3.3V output.
Is there an error or omission in the datasheet, or in the Webench solution calculator?
