A voltage detection circuit, a charge control circuit, a charge and discharge control circuit, and a semiconductor device are provided. The voltage detection circuit includes: an input port; a plurality of transistors connected in series and including at least an input transistor including a gate…

A battery voltage monitoring device includes a clock generation circuit; a switch circuit including first and second N-type transistors and first and second P-type transistors of which sources and back gates are connected to each other, with a drain of one of the first N-type transistor and the…

Provided is a battery-less sensor circuit including a power generation element, a first switching element, a voltage control circuit, a first storage capacitor, a sensor circuit, and a load. The power generation element is connected to the first storage capacitor via the first switching element. A…

The charge control circuit includes a cell connection detection circuit monitoring a voltage between input ports to which terminals of a cell pack are connected, an overvoltage detection circuit monitoring an overvoltage of the secondary cells, a first latch circuit receiving a signal output by the…

Operational instability is prevented without compromising the state transition speed. A mask control circuit is a circuit which generates a mask signal masking a control signal during a period in which a voltage level of a monitoring target terminal to be monitored is transitioning. The mask…

A charge/discharge control circuit controls charging and discharging using a discharge control FET which opens and closes a discharge path and a charge control FET which opens and closes a charge path. The charge/discharge control circuit includes a charge/discharge monitoring circuit; and a…

Provided is a charge/discharge control circuit controllable by a control signal from a controller that is external. The charge/discharge control circuit includes a control circuit configured to, in response to a power-down control signal for transitioning to a power-down state being input from the…

Provided is a technology capable of protecting a charge/discharge control circuit and a battery device from a reverse connection state without a separately provided protection circuit. The charge/discharge control circuit to be contained in a battery device including a secondary cell, an external…

A charge/discharge control circuit includes: an output terminal from which a cell-balance control signal is sent to each of the first and the second cell balance circuits; the first and the second voltage detection circuits; a control circuit configured to send the first and the second control…