Advantage of DC/DC on 54lxx when Vcc is at 1.8V

[Nick_RA]

As per the title: I'm considering nRF54L10 with PM1300 for a new design. If I run the 54L10 supply at 1.8V which is pretty close to the minimum, is there any actual power advantage using the onboard DC/DC on the 54L10?

The application here is a connectable beacon with TX power around the -9 -12dB.

[ketiljo]

The internal supply is much lower, at 1.2 V. so the DCDC will still have benefit. DCDC is mandatory of you want the lowest power mode as there are no low power LDOs. The lowest current draw you can archive without the DCDC is 70-100 µA.