Patent ID: 8400838

Claim:
A boosting circuit which supplies boosted voltages, the boosting circuit comprising: an oscillator configured to output a clock signal; a clock control circuit configured to output a first reference clock signal by controlling the clock signal, and to output a second reference clock signal having a same period as that of the first reference clock signal, the second reference clock signal shifted from the first reference clock signal; a first pump clock generation circuit configured to output the first reference clock signal, as a first pump clock signal on the basis of a first pump flag signal; a second pump clock generation circuit configured to output the second reference clock signal, as a second pump clock signal on the basis of a second pump flag signal; a first charge pump configured to boost an input voltage on the basis of the first pump clock signal and to output an obtained first boosted voltage to a first output terminal; and a second charge pump configured to boosts an input voltage on the basis of the second pump clock signal and to output an obtained second boosted voltage to a second output terminal.