| 摘要 |
A charge-discharge device has a current generating circuit, a charging circuit, a discharging circuit, and a signal processing circuit. The current generating circuit has a first transistor and a second transistor for generating a reference current. The charging circuit has a third transistor, coupled with the first transistor, for providing a charging current to a load according to the reference current. The discharging circuit has a fourth transistor, coupled with the second transistor, for providing a discharging current to the load according to the reference current. The signal processing circuit has a first input end coupled with the first and the second transistors, a second input end for coupling with the load, and an output end coupled with the first and the third transistors. The signal processing circuit amplifies the difference signal between the first end and the second input end to adjust the charging current and/or the discharging current.
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