I'm putting together a buck regulator (first time around) based on the lm2374 chip. TI provides gerbers of a recommended layout for this chip family, but my configuration differs a bit. I've read up on ground bounce, and nominally understand that I need to minimze changing loop areas, but am having a hard time understanding what the loop here would be. I'd like to get feedback on the PCB layout with regards to possible noise/EMI:
I've overlaid additional part names in yellow to make it easier to match up with TI's recommendations / general components. You can ignore the air wires, one is an enable line that hasn't been hooked up to the MCU yet, the other is the battery line being needed elsewhere and eagle drawing the airwire from that particular spot.
Please let me know if/what can be improved here. Thanks.
EDIT Looking at this for the umpteenth time, I do see that I tied the EN pull-up to VIN, not VOUT. I'll make that change.