Other Parts Discussed in Thread: LM3485, LM3489
Reference the latest LM3489-Q1 datasheet: SNVS443C –MAY 2006–REVISED DECEMBER 2016
On page 15, The equations for the inductor ripple as a function of output current is:
(1) My question is if the equation for Iout < 2A is correct?
The reason I ask is that the equation for the LM3485 (similar device) is different.
Reference the latest LM3485datasheet: SNVS178H –JANUARY 2002–REVISED DECEMBER 2015
(2) Is there a formula for Cff?
*** As a side note, there is a missing equation on page 16 of the LM3489-Q1 datasheet. See changes below: