I'm making my own board based on Arduino. To power it I use one LIR2032 cell (button cell 3.6V li-ion battery) that's driven through 3.3V LDO voltage regulator. So far I have tried two different regulators:
and none of them worked, both did not give any voltage at the output. So far I have tried:
- connecting ENABLE pin to VIN (in the second one could be left floating, PCB has an error design with EN disconnected but I've already corrected it!)
- replacing part (in case of ESD)
- correcting joints (in case of cold joints, multimeter shows proper connection)
The voltage regulator is wired the same way as shown in the datasheet
The board works when powered via other source of power so it's not the case of it just not working. Trying different batteries and higher voltages did not solve the problem, output still shows 0V. I have no idea what could be wrong, I hope you can help me with that!
(Yes component is bigger than the pads :) MIC5504 is slightly larger than LD59015 but I managed to solder it properly)