| 摘要 |
PROBLEM TO BE SOLVED: To provide a current detection circuit capable of dealing with high speed load fluctuation, and contributing to low consumption current drive of a latter circuit. SOLUTION: The current detection circuit for detecting a current includes at least a detection resistor Rs for converting a charge current and discharge current of a buttery into a detection voltage, a difference amplifier 1 for amplifying the detection voltage, a current generation circuit 11 for generating a current responding to an output voltage of the difference amplifier 1, and an integrating circuit for performing time integration of the current generated by the current generation circuit 11. The current generation circuit 11 includes a first current mirror circuit. The integration circuit 12 includes a second current mirror circuit which utilizes the output current of the first current mirror circuit as an input current, and a capacitor C1 for charging the output current of the second current mirror circuit. COPYRIGHT: (C)2008,JPO&INPIT
|
