The CC254x family of devices operates between 2.0V and 3.6V. Internally, the supply is generally regulated down to 1.8V using LDOs. This means that for systems with high supply voltages, much of the energy is lost in the LDOs. To remedy this, an external DC/DC can be used to regulate down to ~2V and increase the overall efficiency of the system. The TPS62730 is a high frequency synchronous step down DC/DC converter optimized for low power wireless applications. Read this application note to learn more.