3.3 Volts Output on 1.8 Volt Regultor
The 3.3V regulator(1) (NCP1117 as commented) is missing its output capacitor.

For the output capacitor of the NCP1117 applies:


  Frequency compensation for the regulator is provided by capacitor Cout and its use is mandatory to ensure output stability. A minimum capacitance value of 4.7&mu;F with an equivalent series resistance (ESR) that is within the limits of 33 m&Omega;  (typ) to 2.2&Omega; is required. See Figures 12 and 13. The capacitor type can be ceramic, tantalum, or aluminum electrolytic as long as it meets the minimum capacitance value and ESR limits over the circuit’s entire operating temperature range.


NCP1117 of On Semi

Maybe you could put a SMD capacitor on top of the legs of the NCP1117. Or you could replace C14 and put the 100nF cap on top of the legs of the TLV702.



(1)Please use reference designator for all components.