| 摘要 |
PROBLEM TO BE SOLVED: To provide a boosting circuit that is improved in starting-time stability, without increasing its consuming current. SOLUTION: A plurality of N-channel MOS transistors 41, 43, 45, 47, and 49 are connected in series between an input terminal Vin and an output terminal Vout. One-side electrodes of the MOS transistors 41, 43, 45, 47, and 49 are respectively connected to external terminals VC1-VC5, to which capacitors can be connected to generate boosting voltages. In addition, P-channel MOS transistors 51, 53, 55, 57, and 59 are respectively provided, in parallel with the transistors 41, 43, 45, 47, 49.
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