Part Number: CC2640R2F
Tool/software: WEBENCH® Design Tools
based on the application note below, they have mentioned DC-DC converter mode is the most power-efficient mode.
https://www.ti.com/lit/an/swra640c/swra640c.pdf
in theory,
"Switching regulators usually provide greater efficiency for applications, operating at higher power levels. This makes them ideal for line powered, low-power systems, which focus on increasing efficiency and reducing dynamic power consumption. Even so, they tend to have very low efficiency at low supply currents. A boost regulator, that can be 95% efficient at 50 mA, is likely to have efficiency around 20% or lower at a load current of 10 uA. Keep this in mind when designing a low-power system, which may spend most of its time asleep, as it can result in a linear regulator being a more efficient choice overall."
basically we have two type of power, dynamic power and static power. static power is when the MCU is supplied with power but not running any code. dynamic power is when the MCU running codes. based on theory, LDO will be suitable for power saving for battery-operated embedded systems that spend most of the time in static power state.
please clarify if LDO mode is the best for static power state.
