Boosting circuit and multi-stage boosting circuit using the same

摘要

The city implemented as an integrated circuit layout area smaller and also to remove the threshold voltage of the transistors in the final boost voltage loss The number in the step-up circuit and a multi-stage step-up circuit using the same are disclosed. The step-up circuit includes a first input terminal, between the first input and a second input of opposite phase, that the connection is established, the capacitor to the first input terminal, an output terminal that is connected to the other terminal of the capacitor, the output terminal and the reference voltage terminal a first MOS transistor being connected, between the gate and the gate is connected between the first input terminal of the first MOS transistor and a second MOS transistor coupled to said reference voltage terminal, and the gate and the output terminal of said first MOS transistor connecting a gate characterized by a third MOS transistor connected to the second input. Wherein the reference voltage corresponds to the supply voltage terminal stage. Wherein the first MOS transistor and the third MOS transistor is a PMOS transistor, the second MOS transistor is an NMOS transistor.