| 摘要 |
A voltage regulator and a method forming the same are provided to reduce starting time and power consumption of the voltage regulator, by charging a capacitor rapidly using a high current and maintaining charges on the capacitor using a low current. A voltage regulator(20) includes an output(25), an error amplifier(31), a first input and a charging circuit. The output controls an output voltage as a target value. The error amplifier receives a sensing signal indicating the output voltage, and receives a reference signal, and controls the sensing signal to be equal to the reference signal in response to the reference signal. The first input is connected to a capacitor(16) and receives the reference signal. The charging circuit is connected to the first input, and charges the capacitor with a first current during a first time, and charges the capacitor with a second current after the first time. The first current is higher than the second current.
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