Current monitoring techniques are included in an electronic system that provides power to a load from a power output stage that supplies power to a load. Multiple current control devices form the power output stage in series with multiple sense resistors that provide corresponding sense voltages indicative of current provided through the multiple current control devices to the load in the same or different time intervals. A calibration control circuit controls injection of current through the multiple sense resistors individually and measures the corresponding sense voltages generated by the current to determine resistance values of the multiple sense resistors. A correction subsystem computes a first ratio of a first resistance to a second resistance and a second ratio of a third resistance to a fourth resistance of the multiple sense resistors, and controls compensation for a difference between the first ratio and the second ratio to remove the measurement error.

Current monitoring techniques are included in an electronic system that provides power to a load from a power output stage that supplies power to a load. Multiple current control devices form the power output stage in series with multiple sense resistors that provide corresponding sense voltages indicative of current provided through the multiple current control devices to the load in the same or different time intervals. A calibration control circuit controls injection of current through the multiple sense resistors individually and measures the corresponding sense voltages generated by the current to determine resistance values of the multiple sense resistors. A correction subsystem computes a first ratio of a first resistance to a second resistance and a second ratio of a third resistance to a fourth resistance of the multiple sense resistors, and controls compensation for a difference between the first ratio and the second ratio to remove the measurement error.

An apparatus is described comprising a bandgap reference circuit comprising: an amplifier including first and second inputs and an output; and a bandgap transistor coupled to the output of the amplifier at a control electrode thereof, the bandgap transistor being further coupled commonly to the first and second inputs of the amplifier at a first electrode thereof to form a feedback path. The apparatus further comprises a resistor coupled to the first electrode of the bandgap transistor.

An apparatus is described comprising a bandgap reference circuit comprising: an amplifier including first and second inputs and an output; and a bandgap transistor coupled to the output of the amplifier at a control electrode thereof, the bandgap transistor being further coupled commonly to the first and second inputs of the amplifier at a first electrode thereof to form a feedback path. The apparatus further comprises a resistor coupled to the first electrode of the bandgap transistor.

In certain aspects, a driver includes a pull-down transistor coupled between an output and a ground, a pull-up n-type field effect transistor (NFET) coupled between a first voltage rail and the output, and a pull-up p-type field effect transistor (PFET) coupled between the first voltage rail and the output. The driver also includes a first switch coupled between a gate of the pull-up NFET and the ground, and a second switch coupled between a gate of the pull-up PFET and a second voltage rail.

Disclosed is a digital LDO regulator capable of performing asynchronous binary search using a binary-weighted PMOS array. The digital LDO regulator includes a PMOS array unit including a binary-weighted PMOS array and that binary searches the PMOS array asynchronously, and a mode determining unit that operates in at least one of a fine mode, a coarse mode, and a medium mode, based on an output voltage of the PMOS array unit.

In certain aspects, a voltage regulator includes a pass n-type field effect transistor (NFET) coupled between a first voltage rail and a second voltage rail, and a pass p-type field effect transistor (PFET) coupled between the first voltage rail and the second voltage rail. The voltage regulator also includes a first amplifier having an output, a first switch coupled between the output of the first amplifier and a gate of the pass NFET, a second amplifier having an output, and a second switch coupled between the output of the second amplifier and a gate of the pass PFET, a third switch coupled between the gate of the pass NFET and a ground, and a fourth switch coupled between the gate of the pass PFET and the second voltage rail.

A regulator circuit includes: a regulator part configured to generate a constant internal power supply voltage based on an external power supply voltage; a connection port configured to receive power from the regulator part and to be connected to a connection cable having a predetermined cable resistance, the connection cable is configured to electrically connect the connection port to an external device; a current detecting part configured to detect a power supply current when the connection cable is connected to the connection port; and a voltage compensation part configured to compensate a voltage corresponding to a voltage drop due to the cable resistance according to a current value detected by the current detecting part.

A regulator circuit includes: a regulator part configured to generate a constant internal power supply voltage based on an external power supply voltage; a connection port configured to receive power from the regulator part and to be connected to a connection cable having a predetermined cable resistance, the connection cable is configured to electrically connect the connection port to an external device; a current detecting part configured to detect a power supply current when the connection cable is connected to the connection port; and a voltage compensation part configured to compensate a voltage corresponding to a voltage drop due to the cable resistance according to a current value detected by the current detecting part.

New devices and methods for producing a precision current source or sink with programmable slew rate are disclosed. For example, an electronic circuit capable of providing precision current control including a programmable slew rate is disclosed. For example, the electronic circuit can include a constant current circuit configured to provide a constant current, and a transient current circuit coupled to the constant current circuit at a common electrical node, the transient current circuit configured to sample the constant current of the constant current circuit during a sampling phase, then provide a turn-on programmable slew rate based on the sampled constant current during an active phase.