In the process of fault finding a circuit I am building using an ESP8266, I think I found the problem may be with my LM1117-3,3.
The circuit starts off fine drawing between 80 (off state) and 160 (on state) mA. I measure this via 10 10ohm resistors in parallel. I.E. through a 1ohm shunt resistor.
The strange thing is that the current keeps rising until the LM1117-3,3 goes into shutdown mode (Thermal I think). I tested the LM1117-3,3 through 1K1ohm resistor (Static resistor) and it starts off at the calculated 3mA but just keeps climbing.
The output voltage remains stable to the end, so no idea where all the extra current is going.
I have a 10uF cap between input and GND and a 100uF cap between output and gnd just like it states in the datasheet. Input voltage is 5.12V via a 2A capable plug pack.
Is this a faulty regulator?
Circuit diagram tested above.