Semiconductor Components Industries, LLC

On Semiconductor Trading, Ltd.

Seiji Takai

Susumu Yamada

Hideo Kondo

Nobuhiro Arai

In accordance with an embodiment, a method for discharging a power source such as, for example, a battery, includes determining a capacity of the battery and discharging the battery in response to the capacity of the battery being greater than a reference level. In accordance with another embodiment, a circuit suitable for use with a battery includes a power measurement circuit coupled to a discharge indicator circuit, a control circuit, and a load. The discharge indicator circuit is coupled to the control circuit, which is coupled to a switch configured for activating a discharge operation through the load.

Method of operating a battery and structure therefor

A remaining battery power calculation circuit includes: a detection unit configured to detect an output voltage of a battery; a data storage unit configured to store data in an associated manner with each of a plurality of current values for charge or discharge of the battery, the data indicating a relationship between the output voltage and a ratio of remaining power of the battery to a capacity of the battery in a case where the battery is charged or discharged with each of the plurality of current values; and a first calculation unit configured to calculate a charging/discharging current of the battery based on the data and the output voltage.

Method for determining a power level of a battery and circuit therefor

A charger includes a power supply generating a direct current power supply potential, an output transistor, a USB connector, a controller, and a resistor bridge circuit. The controller has a potential setting circuit which sets the potentials of the first and second connection nodes of the resistor bridge circuit to a middle potential between a power supply potential and a ground potential in a first mode, and sets the potentials of the first and second connection nodes to the power supply potential in a second mode.

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Hirakata, Japan

Seiji Takai