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LT3042-Split Cap/Kelvin - Connections

Question asked by fdroberts2 on Apr 13, 2018
Latest reply on Apr 16, 2018 by fdroberts2

Hello,

  I am using the LT3042 for an ultra-clean 5V supply.  In working to get the best performance I have followed the Appnote for the Demo Board, DC2246B regarding the Split Cap design.

 

My question is whether Pad 1 which connects to the GND Side of Cset and Rset is 'DIRECTLY' attached to GND by what shows as a Via directly above the Pad OR if Pad 1 is just 'VIRTUALLY' (not sure of the precise/best wording) connected to GND since it is on the GND side of the output Cap C2?  

 

Another way to ask this question is "What is the Via above Pad 1 connected to?"

 

Being that it appears that Pad 3 and Pad 4 or only 'VIRTUALLY' connected I am assuming this is the case with Pad 1 and Pad 2 on the GND side of the Cap but this is the first time I have done a 'Kelvin' connected/split Cap design so I would like to ensure I understand this correctly before I submit a PCB for fabrication.

 

Regards,

Frank

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