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LM25116 inductor value

Edward Crean
Prodigy 50 points
Other Parts Discussed in Thread: LM25116

Hi,

We havea  design using web-bench for the LM25116 --12V to 5V@8 amps.  Due to a footprint error, we can only accommodate a 4mm x 4mm inductor.  The inductor  is 1 uH, but at 8 amps, due to saturation effects, the effective inductance is 0.6 uH.  How will the circuit react to the change in inductance.  The web-bench already shows a 820 KHz switching frequency

http://www.coilcraft.com/pdf_viewer/showpdf.cfm?f=pdf_store:xal4000.pdf

Thanks,

Ed Crean