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TPS65131-Q1: Application with a light load

Haruyasu Hirakawa
Prodigy 60 points
Part Number: TPS65131-Q1

Tool/software:

I want to create -2.5V from 5V. An output current of 20mA is sufficient.
If the current consumption is small, when calculating the standard inductor value, it comes out to a very large value of 130uH.

Would it be okay to use 4.7uH?