| 主权项 |
1. A charger circuit, comprising:
a voltage regulator circuit for converting an input voltage to an output voltage which is supplied to an output terminal; a current supply circuit coupled between the output terminal and a battery circuit, for charging the battery circuit; a quantity and voltage sensing circuit coupled to the battery circuit, for generating a voltage sensing signal according to a voltage of the battery and a quantity sensing signal according to a charge storage quantity of the battery; and a control circuit for controlling the voltage regulator circuit and the current supply circuit according to the voltage sensing signal and the quantity sensing signal, wherein when the battery voltage reaches a predetermined voltage, the control circuit determines, according to the quantity sensing signal, whether to charge the battery circuit in a constant current mode in which the battery circuit is charged by a first constant current, or a constant voltage mode in which the battery voltage is regulated according to a target voltage.
|
