ESP32-P4: How to connect VDD_LDO and VDD_DCDCC?

The VDD_LDO pin on the ESP32-P4 microcontroller is used to power the internal Low Dropout Regulator (LDO) of the chip.

Connect VDD_LDO and VDD_DCDCC to the same external 3.3V power supply.. The permissible voltage range for these pins is from 3.0V to 3.6V (absolute maximum rating of 3.6V). Supplying a higher voltage than 3.6V may destroy the chip.

Note: These pins power most of the chip’s internal circuitry, so they require relatively high current compared to other power pins.

Connect on 10uF capacitor near both pins and connect two 100nF capacitors (one for VDD_LDO and one for VDD_DCDCC) as close as possible to the respective pins (all connected between the respective power pins and ground) to ensure stable operation.

Avoid connecting VDD_LDO and VDD_DCDCC directly to the analog 3.3V supply, as this may introduce noise into the analog circuits powered by the analog 3.3V supply.

Source: ESP32-P4 hardware design guide