Hybrid charge pump and method for operating the same, power management IC comprising the pump, and display device comprsing the PMIC

A hybrid charge pump, a method for operating the same, a power management circuit, and a display device are provided. The power management circuit comprises: a main booster for receiving an input voltage to output as a first output voltage; a sub booster for receiving the first output voltage to output as a second output voltage different from the first output voltage; and a hybrid charge pump which receives a switching pulse generated in the main booster to snub overshoot or undershoot present in the switching pulse or to generate and output a negative voltage from the switching pulse.