So for the past couple of days, I was testing out the LTC3112 Buck-Boost IC from Linear Tech. I'm using this for my heated glove project to step up/step down the voltage across the heating element. Using the typical application schematic for my test schematic with a 5V input (while changing the inductor from 4.7uH to 10uH), I tested the output voltage on an LED with a 1K resistor, and it was outputting 5V with appropriate current (of course). But when I switched to a piece of my conductive fabric (at 14 Ohms) as a load, the IC got damaged somehow and now is drawing 300mA - 400mA on the input side of my power supply even when there is no load attached and I am no longer getting a 5V output. Compared to a current draw of 0.027A when the IC was properly working.
I'm just trying to figure out what went wrong and why the IC failed me. The PWM/SYNC, Run, and Vin pin all received 5V. Unless my load somehow shorted itself (which I don't believe to be true), this IC should have been capable of outputting the appropriate current. I honestly don't know what the issue is at this point.