While not exactly the same chip, it basically is - I am using the LM2596
I have created a test board, which I ended up routing wrong, actually had a component in the wrong spot, however have reworked the circuit as a trial and got it working well, so have adjusted the design and will get the next revision printed.
Here is the Top and Bottom prints of my circuit. I have had very little input from other people, so any critique is welcome before I get it printed.
NOTE: The company I get my boards printed cannot print Plated Through Holes (ie Via's), so I have to manually do them with a resistor leg soldered each side. It is a downside, however at around $10 - $15 for a single ($5 - $10 US) 80mm x 80mm board, its perfect for prototyping.
Anyway, this may be of some use to you.
Red is top layer, Blue is bottom layer. Done in Altium Designer.
As mentioned, feel free to critique. I have never built a switcher before, other than the 1st attempt.