Abstract: A charger integrated circuit for charging a battery device including a first battery and a second battery connected to each other in series. The charger integrated circuit includes a first charger to be connected to a connection node between the first and second batteries, a second charger to be connected between the input voltage terminal and a high voltage terminal of the battery device, and a balancing circuit to balance voltages of the first and second batteries. The first charger is to provide a first charge current to the connection node in a first charge mode. The second charger is to directly charge the battery device by providing a second charge current to the high voltage terminal in a second charge mode.

Abstract: A charger integrated circuit for charging a battery device including a first battery and a second battery connected to each other in series. The charger integrated circuit includes a first charger to be connected to a connection node between the first and second batteries, a second charger to be connected between the input voltage terminal and a high voltage terminal of the battery device, and a balancing circuit to balance voltages of the first and second batteries. The first charger is to provide a first charge current to the connection node in a first charge mode. The second charger is to directly charge the battery device by providing a second charge current to the high voltage terminal in a second charge mode.

Abstract: A charger integrated circuit for charging a battery device including a first battery and a second battery connected to each other in series. The charger integrated circuit includes a first charger to be connected to a connection node between the first and second batteries, a second charger to be connected between the input voltage terminal and a high voltage terminal of the battery device, and a balancing circuit to balance voltages of the first and second batteries. The first charger is to provide a first charge current to the connection node in a first charge mode. The second charger is to directly charge the battery device by providing a second charge current to the high voltage terminal in a second charge mode.

Abstract: A charger integrated circuit for charging a battery device including a first battery and a second battery connected to each other in series. The charger integrated circuit includes a first charger to be connected to a connection node between the first and second batteries, a second charger to be connected between the input voltage terminal and a high voltage terminal of the battery device, and a balancing circuit to balance voltages of the first and second batteries. The first charger is to provide a first charge current to the connection node in a first charge mode. The second charger is to directly charge the battery device by providing a second charge current to the high voltage terminal in a second charge mode.

Abstract: Provided are a semiconductor device and a method for operating the semiconductor device. A semiconductor device includes a low power condition module which determines whether a system operated by a battery satisfies enter and exit conditions of a low power mode; an address module which identifies a predetermined own address; a low power set module which sets a detailed operation mode of the low power mode in accordance with the address identified by the address module; a debounce module which executes a debounce operation before the system entering the low power mode; and a low power enter/exit module which executes entry and exit of the low power mode of the system.

Abstract: A magnetic secure transmission system includes an inductor, a switching circuit connected to the inductor, and a control circuit. The control circuit controls the switching circuit to adjust a level of a current in the inductor by a first amount over a data transmission period, such that the inductor emits a magnetic pulse including a first magnitude during the data transmission period. The control circuit controls the switching circuit to adjust the level of the current in the inductor such that the level of the current is increased and decreased repeatedly by a second amount between two different levels during a data non-transmission period, and the inductor emits a magnetic pulse including a second magnitude during the data non-transmission period. The second amount is less than the first amount, the first magnitude is greater than a threshold value and the second magnitude is less than the threshold value.

Abstract: An electronic device includes a connector connected to a cable external to the electronic device and including a plurality of pins; a first water detection circuit connected to at least one first pin of the plurality of pins and generating a first detection result by detecting whether there is water in the connector based on resistance of the at least one first pin; and a second water detection circuit connected to at least one second pin of the plurality of pins, entering a water detection mode when the first detection result indicates the presence of water, and detecting whether there is water in the connector based on resistance of the at least one second pin.

Abstract: The semiconductor device including first and second transistors configured to provide a first voltage to a first node, the first voltage being a voltage provided from a travel adaptor (TA), a third transistor connected in series with the second transistor and configured to provide a ground voltage to the first node, and a fourth transistor configured to receive a second voltage from a first inductor connected to the first node, and provide the second voltage to a second node as a third voltage for charging a battery connected thereto may be provided.

Abstract: Provided are a foreign substance detecting circuit, an electronic device including the foreign substance detecting circuit, and a method of detecting foreign substance. The electronic device includes a connector connected to an external cable and including a plurality of pins, a foreign substance detecting circuit configured to, when the cable is connected to the connector, detect a resistance from a first pin that is set to be in an open state or to be connected to a pull-down resistor from among the plurality of pins in a state where the cable is connected, and determine whether there is a foreign substance in the connector, and an application processor configured to control operations in the electronic device for performing a post-process when there is the foreign substance in the connector, according to a detection result from the foreign substance detecting circuit.

Abstract: A charger integrated circuit for charging a battery device including a first battery and a second battery connected to each other in series. The charger integrated circuit includes a first charger to be connected to a connection node between the first and second batteries, a second charger to be connected between the input voltage terminal and a high voltage terminal of the battery device, and a balancing circuit to balance voltages of the first and second batteries. The first charger is to provide a first charge current to the connection node in a first charge mode. The second charger is to directly charge the battery device by providing a second charge current to the high voltage terminal in a second charge mode.

Abstract: Provided are a semiconductor device and a method for operating the semiconductor device. A semiconductor device includes a low power condition module which determines whether a system operated by a battery satisfies enter and exit conditions of a low power mode; an address module which identifies a predetermined own address; a low power set module which sets a detailed operation mode of the low power mode in accordance with the address identified by the address module; a debounce module which executes a debounce operation before the system entering the low power mode; and a low power enter/exit module which executes entry and exit of the low power mode of the system.

Abstract: A magnetic secure transmission system includes an inductor, a switching circuit connected to the inductor, and a control circuit. The control circuit controls the switching circuit to adjust a level of a current in the inductor by a first amount over a data transmission period, such that the inductor emits a magnetic pulse including a first magnitude during the data transmission period. The control circuit controls the switching circuit to adjust the level of the current in the inductor such that the level of the current is increased and decreased repeatedly by a second amount between two different levels during a data non-transmission period, and the inductor emits a magnetic pulse including a second magnitude during the data non-transmission period. The second amount is less than the first amount, the first magnitude is greater than a threshold value and the second magnitude is less than the threshold value.

Abstract: A magnetic secure transmission (MST) system includes a switching circuit, an inductor, and a control circuit. The control circuit is configured to control the switching circuit to adjust a level of current in the inductor. The inductor current may be adjusted by a first amount over a data transmission period such that the inductor emits a magnetic pulse including a first magnitude. The inductor current may be kept constant during a first sub-period of a data non-transmission period and may be changed by a second amount at a constant slope during a second sub-period of the data non-transmission period, such that the inductor emits a magnetic pulse including a second magnitude during the second sub-period of the data non-transmission period. The second amount is less than the first amount. The first magnitude is greater than a threshold value. The second magnitude is less than the threshold value.

Abstract: A power management system comprises a power converter comprising a power stage and configured to detect an abnormal static state of the power stage, to generate a protection signal in response to the detection of the abnormal static state of the power stage, and to stabilize a direct current (DC) power supply voltage in response to an enable signal to generate a DC output voltage, and a main control circuit configured to generate the enable signal for the power converter based on the protection signal received from the power converter.

Abstract: Provided are a foreign substance detecting circuit, an electronic device including the foreign substance detecting circuit, and a method of detecting foreign substance. The electronic device includes a connector connected to an external cable and including a plurality of pins, a foreign substance detecting circuit configured to, when the cable is connected to the connector, detect a resistance from a first pin that is set to be in an open state or to be connected to a pull-down resistor from among the plurality of pins in a state where the cable is connected, and determine whether there is a foreign substance in the connector, and an application processor configured to control operations in the electronic device for performing a post-process when there is the foreign substance in the connector, according to a detection result from the foreign substance detecting circuit.

Abstract: An electronic device includes a connector connected to a cable external to the electronic device and including a plurality of pins; a first water detection circuit connected to at least one first pin of the plurality of pins and generating a first detection result by detecting whether there is water in the connector based on resistance of the at least one first pin; and a second water detection circuit connected to at least one second pin of the plurality of pins, entering a water detection mode when the first detection result indicates the presence of water, and detecting whether there is water in the connector based on resistance of the at least one second pin.

Abstract: The semiconductor device including first and second transistors configured to provide a first voltage to a first node, the first voltage being a voltage provided from a travel adaptor (TA), a third transistor connected in series with the second transistor and configured to provide a ground voltage to the first node, and a fourth transistor configured to receive a second voltage from a first inductor connected to the first node, and provide the second voltage to a second node as a third voltage for charging a battery connected thereto may be provided.

Abstract: A voltage converter includes a converting circuit and a switching control circuit, where the converting circuit includes an inductor connected to a switching node, a first switching device connected between the switching node and a common voltage and a second switching device connected to the switching node, where the first switching device charges the inductor and discharges the inductor in response to a control signal, and the switching control circuit generates the control signal by performing a PWM and a PFM based on a first sensing signal, a second sensing signal and a feedback signal, and adjusts a charging time of the inductor on a time basis, based on at least the input power supply voltage when the switching control circuit performs the PFM.

Abstract: A magnetic secure transmission (MST) system includes a switching circuit, an inductor, and a control circuit. The control circuit is configured to control the switching circuit to adjust a level of current in the inductor. The inductor current may be adjusted by a first amount over a data transmission period such that the inductor emits a magnetic pulse including a first magnitude. The inductor current may be kept constant during a first sub-period of a data non-transmission period and may be changed by a second amount at a constant slope during a second sub-period of the data non-transmission period, such that the inductor emits a magnetic pulse including a second magnitude during the second sub-period of the data non-transmission period. The second amount is less than the first amount. The first magnitude is greater than a threshold value. The second magnitude is less than the threshold value.

Abstract: A voltage converter includes a driving device unit, a current sensing unit and a switching control circuit. The driving device unit charges an input power supply voltage in an inductor, connected between a switching node and an output node, in response to a first driving control signal, and discharges the inductor in response to a second driving control signal. The current sensing unit generates first and second sensing signals based on a first sensed current, a second sensed current, a voltage at the switching node and a ground voltage. The switching control circuit generates the first and second driving control signals by performing a pulse-frequency modulation (PFM) and a pulse-width modulation (PWM) based on a feedback voltage, a reference voltage and the first and second sensing signals. The switching control circuit adaptively adjusts off-time when the switching control circuit performs the PFM.