Inductors are really not my strong point, and I have been getting a bit confused on the rated current vs saturation current.
I know the rated current is how much current the inductor can handle before the temperature increases too much, and all I know about saturation current is when that threshold is approached and exceeded, the core is filled with magnetic flux and the inductance starts to drop.
I have come across a chip inductor HERE which I am planning on using in a boost regulator circuit. It is cheaper and smaller than the current inductor I am using, with the same rated current. However, whereas my old one had a saturation current of 900mA, this one is very low at 250mA.
Why is there such a difference in saturation current in chip inductors? My boost regulator chip has recommended inductor values of 2.2uH to 4.7uH, so if my current peaks at 300mA for a few ms and the inductance drops somewhat, will this still be ok to use? And would this change in inductance affect the output stability in any way?
As much as I would love to save money and PCB space, I don't know enough about these parameters to make an informed decision. Any advice on how to proceed is appreciated.