CHARGE CONTROL CIRCUIT, CHARGING CURRENT CORRECTION METHOD AND CHARGING CIRCUIT AND ELECTRONIC EQUIPMENT EMPLOYING THEM

摘要

PPROBLEM TO BE SOLVED: To set a charging current precisely in a charge control circuit having a resistive element for current detection provided in an LSI. PSOLUTION: In the charge control circuit 100 for adjusting a charging current flowing from a power supply to a battery becoming a charging object, a detection resistor Rsense is provided on a charging route from an external power supply 210 to a battery 220. A charging current adjusting circuit 40 adjusts a charging current Ichg based on the error voltage between a voltage drop V generated in the detection resistor Rsense and a predetermined reference voltage Vref. The charge control circuit 100 is integrated. The charging current Ichg is inputted to a current input terminal 106. A battery terminal 108 outputs the charging current to the battery 220. The current input terminal 106 and the battery terminal 108 also serve as terminals for measuring the resistance of the detection resistor Rsense in the inspection process. A voltage monitor terminal 110 is provided in order to measure the reference voltage Vref in the inspection process. PCOPYRIGHT: (C)2008,JPO&INPIT