Other Parts Discussed in Thread: TPS40055, TPS40057, LM25116, LM25117, LM25145, LM5145
Describe : RKFF = 62K & RA = 430K that SMPS can normal work (Turn on point at 10V when ambient = 25 deg C)
issue : The turn on point (UVLO) will change to 9.8V when ambient = -40 deg C
Calculate the RKFF (55K ohm) and RA (443K ohm) for adjust the lower UVLO point (9.2V) , but it don’t helpful
Could you please help reply it or tell us how to adjust it ?
Thanks a lot.