4.6 Power Supply

The USB-C port powers the board. The VBUS net is limited to a 2 V/ms slew rate and is current limited to 500 mA by U108 (MIC2008).

The power supply consists of two LDO regulators, one to generate 3.3V for the on-board debugger and an adjustable LDO regulator for the target PIC32CM3204GV00064 microcontroller and its peripherals. The voltage from a USB connector can vary between 4.4V and 5.25V (according to the USB specification) and will limit the maximum voltage supplied to the target.

The figure below shows the entire power supply system on the PIC32CM GV-Value Line Curiosity Nano+ Touch board.