In integrated circuit includes a processing module that determines a selected one of the plurality of power modes based on a function being currently performed by at least one non-transceiver module of a host device, and generates a power mode signal based on the selected one of the plurality of power modes. An RF transmitter generates a transmit signal at a selected one of the plurality of operating power levels based on the power mode signal and that operates from at least one transmitter power supply signal generated and selected by a power management circuit in response to the power mode signal.