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DP83867IS: Power Sequencing

Part Number: DP83867IS

Hello E2E,

We’re wondering if we should be powering the DP83867IS with the 3-supply configuration to reduce a little power.  I’m wondering, how important is the sequencing of the 2.5V and 1.8V rails for this?  I’m fairly confident that I will be able to meet the 25ms with the ramp-up, but I don’t really know about the powering down of the 1.8V before the 2.5V.  Can you find out how critical this is?

 

Thanks!

Russell