Usually a voltage regulator requires external components that guarantee that the internal control loop is stable and doesn't oscillate. At minimum it's a capacitor at the input and a capacitor at the output, both with minimal distance to the regulator. Using the suggested schematics ensures that the correct values are used. The input filtering might improve Wifi/BT reception as well.
Statistics: Posted by fchk — Thu Nov 20, 2025 7:37 am