I'm trying to implement an Exar XRP7659 on a breadboard to step 17V to 5V @ 1.5A. The regulator is rated for 18v. Now, I have the circuit wired up and initially the output voltage is 5V on the regulator but after I add load (a phone to charge via USB) the voltage drops to 3.25V and then spikes to ~16V (presumably fried because it won't step to 5V anymore). I even had one regulator catch on fire! As far as my components, all resistors are 1% except for the 100k EN resistor. The capacitors are all ceramic as well.
Here's the regulators application guide for 5V:
Here's my breadboard's layout with labels:
Any idea what I'm doing to destroy these regulators?