Low-voltage difference linear constant voltage regulator with novel structure
A low-dropout linear voltage regulator technology, which is applied in the direction of instruments, control/regulation systems, and electric variable adjustment, can solve the problems of low-dropout linear voltage regulator performance impact and narrow output voltage range
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[0027] figure 2 The schematic diagram of the structure of the embodiment of the present invention is shown. The low-dropout linear regulator provided by the present invention includes an error amplifier 101, a buffer circuit 106, a driving element 102, a driving element bias circuit 108 and a compensation circuit 107. In addition, the load capacitance equivalent series resistance compensation circuit 104 and the load impedance 105 are the same as the existing typical low-dropout linear regulators, and will not be repeated. The error amplifier 101 adopts a rail-to-rail folded cascode operational transconductance amplifier structure; a buffer circuit 106 is added between the error amplifier 101 and the driving element 102, the driving element receives the voltage signal from the buffer circuit, and the load current is controlled by the voltage signal Change; no resistor divider feedback network is used, and the output terminal of the drive element 102 (that is, the output terminal...
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