Does the BL653 support external circuitry on VDD using high voltage mode?

BL653BL653μ

Answer

The nRF52833 used on the BL653 module does not incorporate the internal circuitry from the REG0 output to support external loading on VDD when the module is configured for High Voltage Mode. When in Power Off mode there may be issues with the POR circuit if current is drawn from REG0.