| 摘要 |
Intended is to provide a charge pump type booster circuit, in which a regulator for generating a voltage of non-integer times from a voltage of integer times has to be so constituted as can withstand a high voltage in case an output voltage (VOUT) of non-integer times as high as an input voltage (VIN) is to be generated. The boosted output voltage (VOUT) is divided by resistors (R1, R2). An operation amplifier (A) controls the amplitudes of the drive clocks of condenser drive circuits (30, 32) with an output voltage (VA) so that a divided voltage (VB) may be VREF. As a result, the output voltage (VOUT) is subjected to a feedback control, and the voltage (VREF) and the voltage (VOUT) of non-integer times set according to a resistance ratio (R1/R2) are extracted from an output terminal (NOUT). |
