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LDO LINEAR REGULATOR WITH IMPROVED TRANSIENT RESPONSE
LDO LINEAR REGULATOR WITH IMPROVED TRANSIENT RESPONSE
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机译:具有改善的瞬态响应的LDO线性稳压器
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摘要
An LDO regulator system has first and second current mirror circuits connected to its output terminal. A load attached to the output terminal is supplied with a constant voltage. Variations in the load that cause variations in the magnitude of the output voltage trigger one of the first or second current mirror circuits to generate a current that varies the magnitude of a gate voltage of a pass-transistor. The variation in the gate voltage in turns varies the drain current of the pass-transistor, which varies the output voltage to counter the change in the magnitude of the output voltage. Using the first and second current mirror circuits avoids the need for a large load capacitor and very high bandwidth of a conventional LDO regulator.
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