Boosting circuit.

摘要

A boosting circuit comprising: a plurality of variable capacitors with capacitance values controllable in accordance with the voltage level at their first and -second terminals; a plurality of first buffer circuits located at the first terminal side, each acting to increase the voltage level at the corresponding first terminal to a first level; and a single second buffer circuit located at the second terminal side cooperating commonly with these variable capacitors, acting to increase the voltage level at each second terminal. The first level is thus boosted to a second level which results in an output of the circuit concerned. Each variable capacitor is fabricated by a MOS transistor capacitor.