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PF series PMIC VSNVS question

Question asked by Ben Stelle on Sep 22, 2015
Latest reply on Sep 23, 2015 by Ben Stelle

Hello, I am new to this forum so hopefully this will get someone's attention soon so I can finish my design.  Anyway, the question that I have is regarding the PF series PMICs and the VSNVS LDO in them.  Having read the datasheet several times now, it is not at all clear to me how much current this particular regulator can support.  Can anyone help with this?  Also, it looks from the datasheet like there is a minimum current of 5 uAmps, is this correct?

 

In my application circuit, I have an RTC domain that will consume as much as 430 uAmps when the processor is active and about 30uAmps when it is asleep (RTC only mode).  The supply voltage for this domain must be 1.8V no matter which mode I am in.  I have the ability to put in just about any supply voltage, but again it isn't really clear that a larger or smaller voltage is advantageous or if it even matters.

 

Please advise,

 

Ben

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