Disclosed is a power supply management circuit and an implementation method therefor. The circuit comprises: an oscillator circuit, a charge pump circuit and a negative feedback circuit. The oscillator circuit is connected to the charge pump circuit, and the negative feedback circuit is respectively connected to the oscillator circuit and the charge pump circuit. The oscillator circuit is configured to generate two opposite clock signals to the charge pump circuit according to an input voltage. The charge pump circuit is configured to boost, according to the two opposite clock signals generated by the oscillator circuit, the input voltage and output same. The negative feedback circuit is configured to stabilize an output voltage of the charge pump circuit and output a feedback signal, wherein the feedback signal is used for controlling the working of the oscillator circuit.