Patent ID: 8860376

Claim:
A semiconductor integrated circuit device comprising: a charging control circuit configured to control charging of a secondary battery, wherein the charging control circuit includes a temperature comparison part configured to output a temperature range signal corresponding to a detected voltage from a temperature sensor configured to detect a battery temperature of the secondary battery, a control part configured to perform both controls of a battery temperature charging control for controlling a charging current and a charging voltage based on the temperature range signal, and a battery voltage charging control for controlling at least a constant current charge and a constant voltage charge based on a battery voltage of the secondary battery, and a regulator configured to serve as a voltage source in the temperature comparison part; and a package including a supply terminal to which a supply voltage fed to the charging control circuit is input, a battery terminal configured to supply the charging current and the charging voltage output from the control part to the secondary battery and to which the battery voltage of the secondary battery is input, a temperature detection terminal to which the detected voltage from the temperature sensor is input and configured to supply the detected voltage to the temperature comparison part, and a reference voltage terminal configured to output a voltage from the regulator to an outside of the semiconductor integrated circuit device as a reference voltage, wherein the temperature detection terminal and the reference voltage terminal are external connection terminals of the semiconductor integrated circuit device and are provided separately from each other, the reference voltage terminal is connected directly to the regulator to constantly output the reference voltage, and the reference voltage terminal is configured to be connected to the temperature detection terminal via a resistor provided outside the semiconductor integrated circuit device.