HIGH-VOLTAGE ELECTRIC CHARGE PUMP

摘要

PURPOSE: To provide a charge pump efficient for performing write to an EEPROM. CONSTITUTION: In a charge pump circuit 50, a single clock signal CLK, voltage feedback constitution 54 capable of passing through a DC voltage and the plural pieces of transistors 53, 55 and 61 respectively serially connected to respective grounding gate transistors 51, 57 and 59 for removing inverse breakdown voltage loads on the grounding gate transistors are used.