Abstract: A voltage booster for generating a boosted voltage, including a charge pump adapted to generate the boosted voltage starting from a supply voltage by a transfer of electric charge controlled by at least one oscillating signal having an oscillation frequency; an oscillator for providing the oscillating signal; and a regulation circuit arranged to receive and perform a comparison of a voltage related to the boosted voltage and a reference voltage, and adapted to provide at least one regulation signal indicative of a result of said comparison, wherein said regulation signal is fed to the oscillator to control said oscillation frequency. The regulation circuit is adapted to cause the at least one regulation signal take one among a plurality of discrete values, depending on the result of the comparison, so that the oscillation frequency of the at least one periodical signal accordingly can take one among a plurality of discrete oscillation frequency values.

Abstract: A voltage booster for generating a boosted voltage, including a charge pump adapted to generate the boosted voltage starting from a supply voltage by a transfer of electric charge controlled by at least one oscillating signal having an oscillation frequency; an oscillator for providing the oscillating signal; and a regulation circuit arranged to receive and perform a comparison of a voltage related to the boosted voltage and a reference voltage, and adapted to provide at least one regulation signal indicative of a result of said comparison, wherein said regulation signal is fed to the oscillator to control said oscillation frequency. The regulation circuit is adapted to cause the at least one regulation signal take one among a plurality of discrete values, depending on the result of the comparison, so that the oscillation frequency of the at least one periodical signal accordingly can take one among a plurality of discrete oscillation frequency values.