If you stumble upon it at some point a link would be very much appreciated.
There is nothing special nor magic about routing for these IC's, and the same principles apply to all circuits, although some are much more susceptible to them then others. Some of the rules are:
1). Separate high current paths from feedback signals. High currents cause voltage drops over PCB tracks, and this voltage drop is fed back into a control loop it may cause instabilities. This can of course also be done on purpose, for example a voltage regulator with "remote sensing", but then you have to carefully design the control loop and frequency response, poles and zero's and that kind of stuff.
1a). This is also true for the return currents (usually through GND connections) Currents though GND wires also create voltage drops, and this is why sometimes star ground points are used.
2). Loop inductance. Whenever a wire goes in a circle, it forms a one winding inductor. This inductor can be a cause of phase shifts in your control loop, but it also works as an antenna (both transmit and receive!) The bigger the area circumscribed by the loop is, the more noise it will pick up (such as the ever present mains hum) and also the bigger the inductance will be (Even a straight wire has self inductance!)
3). Parallel tracks (or any tracks near each other) on a PCB form a capacitor, and thus signals can be coupled into nearby tracks.
Everything put together, the routing of the tracks is an important part of a design. It can be the difference between a perfectly working circuit, and a circuit not working at all.