SWRU546E October 2018 – May 2022 AWR6843 , AWR6843AOP , IWR6443 , IWR6843 , IWR6843AOP
PMIC(U4) rails such as 1.8 V, 1.2 V, 1.0 V, and 3.3 V are disabled by default. 3.3 V is derived from input 5-V jack, on-board micro USB connector, or from the 40-pin LaunchPad, as shown in Table 2-12. 3.3 V is for the starter kits and the rest of the board to operate.