It's the fourth esp8266-12e that destroyed with my AMS1117-3.3 voltage regulator.
I'm powering esp8266 with AMS1117-3.3 module and this simple circuit:
Input voltage: 5.4 V from adapter Input cap: 1000 uF Output cap: 470 uF Esp8266 current: about 100 mA
But the esp8266 will burn after some on-off switches.
Am I doing anything wrong?
I'm testing it on a breadboard and the ams1117-3.3 is a copy model. I've measured the output voltage of it with my scope and I saw some ripples with a maximum of 4.6 V and about 20 ns duration at the moment I switch input voltage ON and OFF. Can these short ripples burn the esp8266? How can I protect it?
I saw these ripples also on Lf33 and 7805 (original models)
Ripples on output voltage of AMS1117-3.3 triggering when switching input voltage ON/Off: