A current management method controls a circuit including a processing circuit consuming a load current and a voltage-controlled oscillator with terminals coupled to a power management integrated circuit and the processing circuit. The method includes detecting whether the load current exceeds a current threshold by the power management integrated circuit, clamping an output current substantially to a maximum output current when the threshold is exceeded, sensing an output voltage drop by the voltage-controlled oscillator, and adjusting an output signal to reduce a frequency. The current threshold is less than or equal to the maximum output current. This achieves closed-loop control preventing system instability.