Power supply for micro(3.3) and LCD(5)
The TPS560430X3F is a fixed 3.3V model, so you are using the wrong regulator model.
It seems that what you wanted was the adjustable TPS560430XF model, i.e. &quot;XF&quot; instead of &quot;X3F&quot;.
The incorrect regulator does not work in the circuit meant for adjustable model, and has damaged the rest of the components with overvoltage.
Explanation:
If read the datasheet correctly, the fixed 3.3V version has the feedback reference voltage of 3.3V instead of 1.0V, so the feedback resistors try to set the regulator output to 16.5V.
So basically the 5V node has most likely had serious overvoltage, and it's exceeded the ratings of all 5V powered components, and they are damaged. For example the 3.3 LDO has absolute maximum rating of 6V, so chances are everything powered by it is also damaged.
Edit: After changing to correct adjustable regulator component, apply the input supply with the proper polarity.