Hello everyone,
We see that there are problems with our microcontroller, an ESP323-S3, power supply. The module starts correctly from 4.2V to 3.3V. However, when the voltage drops from this value, the microcontroller gives a "brownout" error which indicates that the supply current is not sufficient.
The input voltage goes first through a BOOST (https://www.mouser.es/datasheet/2/277/MP3120-2945726.pdf) to 5V and then through a LDO (https://www.mouser.es/datasheet/2/389/ld1117-1849389.pdf) to 3.3V as you can see in the attached image.
We believe that this problem could be due to the start of some bluetooth process of the microcontroller which requires a higher current peak than normal. Although in principle this should not create any problem since both the BOOST and the LDO are capable of supplying values above 300 mA.
We see that there are problems with our microcontroller, an ESP323-S3, power supply. The module starts correctly from 4.2V to 3.3V. However, when the voltage drops from this value, the microcontroller gives a "brownout" error which indicates that the supply current is not sufficient.
The input voltage goes first through a BOOST (https://www.mouser.es/datasheet/2/277/MP3120-2945726.pdf) to 5V and then through a LDO (https://www.mouser.es/datasheet/2/389/ld1117-1849389.pdf) to 3.3V as you can see in the attached image.
We believe that this problem could be due to the start of some bluetooth process of the microcontroller which requires a higher current peak than normal. Although in principle this should not create any problem since both the BOOST and the LDO are capable of supplying values above 300 mA.
