Hi,

The ESP32-LyraT EVB uses a LD1117S33CTR LDO to provide the 3.3V (VDD33) supply.
This LDO input is driven either by the USB interface or by the LIPO battery.
The LDO dropout voltage is about 1V-1.3V, which means minimum LDO input should be about 4.3V-4.6V.
However, to the best of my ...