Positive charge pump circuit for voltage production includes regulation circuit using two reference voltages in operational or standby mode of integrated circuit

摘要

Enables voltage regulation at two levels thus enabling use of power saving mode of integrated circuit. The circuit provides control of the output voltage (VPOL) of a device which generates a voltage by use of a charge pump circuit operated by an integrated circuit. It comprises a comparison circuit (Comp) receiving on its input a reference voltage (Vref) and providing on its output a validation signal (Outc) directed to the generation device (1). The circuit also includes a first switching circuit (2) controlled by a first control signal (Sleep) to apply a first voltage level (V1) as a reference voltage (Vref) in the operational mode of the integrated circuit, or a second voltage level (V2) in the standby mode of the integrated circuit.