Power management circuit operable to reduce rush current

A power management circuit comprising:

• a plurality of voltage outputs each outputting a respective one of a plurality of time-variant voltages to a respective one of a plurality of power amplifiers for amplifying a respective one of a plurality of signals;
• a voltage circuit configured to generate a first reference voltage and a second reference voltage based on a battery voltage;
• a first voltage driver circuit coupled between the voltage circuit and the plurality of voltage outputs and configured to generate the plurality of time-variant voltages based on the first reference voltage;
• a second voltage driver circuit coupled between the voltage circuit and the plurality of voltage outputs and configured to generate the plurality of time-variant voltages based on the second reference voltage;
• and
• a control circuit configured to cause the first voltage driver circuit to maintain the plurality of time-variant voltages at a non-zero standby voltage level in response to determining that each of the plurality of power amplifiers is inactive.