Current measurement

You can use the Nordic Thingy:53™ current measurement and debug board to measure certain currents on the Nordic Thingy:53.

The currents are the following:

• The current flowing to the nPM1100 Power Management Integrated Circuit (PMIC) from the battery through the P1 connector
• The current flowing to the nRF5340 System on Chip (SoC) from the VOUTB rail through the P2 connector
• The current flowing to the nRF21540 RF FEM from the VOUTB rail through the P3 connector
• The current flowing to external devices from the 3V3 regulator through the P4 connector

Load switches U4, U5, U11, and U14 are disengaged when the Nordic Thingy:53 current measurement and debug board is inserted into the debug board interface (P9).

The following schematic describes the load switches.