Too bad I didn't see this before for my WiFi cart design. The ESP8266 module can draw up to 170 mA
, and that's the module alone (I have to add the UART, Flash chip and the transceivers). So far I have experienced no problems, but I have not yet done stress tests.
If I would have read this before, I would have used a switching power supply to generate the 3.3V, instead of a linear one
. An ideal SMPS would take those 170 mA down to 112 mA (of course there are no ideal power supplies, but I suppose I would be near those 120 mA.