CHARGE PUMP CIRCUIT PREVENTING A BODY EFFECT

摘要

PURPOSE: A charge pump circuit is provided to prevent a body effect and to generate a high voltage rapidly. CONSTITUTION: The first pumping unit(110) pumps charges according to the first and the second clock signal. A transfer unit(120) transfers the charges pumped by the first pumping unit. A voltage drop prevention unit(130) prevents voltage drop by being connected to the transfer unit. And the second pumping unit(140) is connected to the transfer unit, and reduces a pumping time by the second and the fourth clock signal. The transfer unit comprises a number of NMOS transistors connected between an input port and an output port serially.