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Soundcard PCB layout and layers ?

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MathWizard:
For the dual audio rail output's , it uses this LM2735 SEPIC DC-DC regulator. I' not familiar with SEPIC layouts. In the data sheet http://www.ti.com/lit/an/snva255a/snva255a.pdf
I don't see this type with split rails. (see attached schem. that I've mapped out)

And I I tried it with a mosfet stand in for the non-functional LT chip, IDK if it's really working, maybe I'm missing a hidden part too

I can't find an L.Tech. equiv. of the LM chip either

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