Abstract: An electrical device may include an electrical load that draws current, a charge pump that provides the current to the electrical load, and clock circuitry. The charge pump may include an amplifier, a first fly capacitor, a second fly capacitor, and multiple switches. A first set of the switches may couple the first fly capacitor between a supply and ground based on a first set of clock signals and between the amplifier and the electrical load based on a second set of clock signals. A second set of the switches may couple the second fly capacitor between the supply and ground based on the second set of clock signals and between the amplifier and the electrical load based on the first set of clock signals. The clock circuitry may alternate between generating the first set of clock signals and the second set of clock signals based on the current.

Abstract: An electrical device may include an electrical load that draws current, a charge pump that provides the current to the electrical load, and clock circuitry. The charge pump may include an amplifier, a first fly capacitor, a second fly capacitor, and multiple switches. A first set of the switches may couple the first fly capacitor between a supply and ground based on a first set of clock signals and between the amplifier and the electrical load based on a second set of clock signals. A second set of the switches may couple the second fly capacitor between the supply and ground based on the second set of clock signals and between the amplifier and the electrical load based on the first set of clock signals. The clock circuitry may alternate between generating the first set of clock signals and the second set of clock signals based on the current.

Abstract: A low-dropout (LDO) regulator circuit with dynamic transitioning between first and second operation modes. The LDO regulator circuit includes an operational amplifier with a first input connected to a reference voltage, a feedback circuit connected between a second input of the operational amplifier and an output of the LDO regulator circuit, and a pass transistor selectively coupled to the feedback circuit and an output of the operational amplifier via a set switches controlled by a switch mode enable signal. The LDO regulator circuit transitions between the first and second operation modes responsive to one or more changes of the switch mode enable signal. In the first operation mode, a load voltage at the output of the LDO regulator circuit has a first voltage value that depends on the reference voltage. In the second operation mode, the load voltage has a second voltage value independent from the reference voltage.

Abstract: A low-dropout (LDO) regulator circuit with dynamic transitioning between first and second operation modes. The LDO regulator circuit includes an operational amplifier with a first input connected to a reference voltage, a feedback circuit connected between a second input of the operational amplifier and an output of the LDO regulator circuit, and a pass transistor selectively coupled to the feedback circuit and an output of the operational amplifier via a set switches controlled by a switch mode enable signal. The LDO regulator circuit transitions between the first and second operation modes responsive to one or more changes of the switch mode enable signal. In the first operation mode, a load voltage at the output of the LDO regulator circuit has a first voltage value that depends on the reference voltage. In the second operation mode, the load voltage has a second voltage value independent from the reference voltage.

Abstract: A linear regulator which has a pass device coupled between an input voltage level and an output node, a voltage divider circuit for generating a feedback voltage that depends on an output voltage at the output node, and an operational amplifier for controlling the pass device, the operational amplifier receiving the feedback voltage and a reference voltage at its inputs is presented. The operational amplifier has: an input stage that receives the feedback voltage and the reference voltage at its inputs, an amplifier stage that receives an output of the input stage at its input, and a current injection circuit for sourcing current into an intermediate node between the input stage and the amplifier stage, or sinking a current from the intermediate node. The disclosure further relates to a corresponding method of operating a linear regulator.

Abstract: A linear regulator which has a pass device coupled between an input voltage level and an output node, a voltage divider circuit for generating a feedback voltage that depends on an output voltage at the output node, and an operational amplifier for controlling the pass device, the operational amplifier receiving the feedback voltage and a reference voltage at its inputs is presented. The operational amplifier has: an input stage that receives the feedback voltage and the reference voltage at its inputs, an amplifier stage that receives an output of the input stage at its input, and a current injection circuit for sourcing current into an intermediate node between the input stage and the amplifier stage, or sinking a current from the intermediate node. The disclosure further relates to a corresponding method of operating a linear regulator.