Since the Raspberry Pi 2 was released ... It’s an AP2253 current-limited power switch (PDF), and the current is adjustable by tying a resistor to pin 5 on the chip. Pin 5 on the AP2253 is ...
Additionally, both include power pins for external components, but the Pico is only equipped with one (3.3V), while the Nano has two (3.3V and 5V). The Arduino Nano and Raspberry Pi Pico are ...