Multistage multiple output power management circuit

The embodiment of the invention discloses a multistage multiple output power management circuit. The management circuit comprises a DC-DC module, a second stage voltage stabilization module and a third stage power supply module, wherein the DC-DC module is used for outputting a first stage power supply voltage, and a primary power supply source is provided for the second stage voltage stabilization module through the outputting of the first stage power supply voltage; the second stage voltage stabilization module is used for receiving the first stage power supply voltage and outputting a second stage power supply voltage; the third stage power supply module is used for receiving the second stage power supply voltage and outputting voltage supply and power supply. According to the embodiment of the multistage multiple output power management circuit, no extra pins used for isolation power supply of multiple voltage domains are needed to be provided, on the basis of a normal power supply voltage, multiple models in a reader support low power consumption model of ultra-low power supply, the ultra-low voltage power supply is achieved, and environment noise is avoided being introduced into in the power supply process.