Some USB 3.0 ports that are designed for charging can supply 5V at 1.5A ... different voltages like 5V, 9V, 15V, and 20V, ensuring your device gets exactly the power it needs without overloading ...

which can be 5.5V or 3.3, depending on application, and core voltage VDD09 supply. View Power management unit (0.9V, 1.8V, 3.3V output voltages, 1.2V reference voltage and 10uA/1uA reference currents) ...