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The power supply rejection (PSR) based on closed-loop low-dropout regulator (LDO) is analyzed to achieve high PSR in LDO, and help the designer meet the PSR requirement when considering the other performances of LDO. Using small signal model of MOS transistor, Kirchhoff's current/voltage law, and the tool of Mathematica, the PSR with DC gain, poles, and zeros of power stage and six kinds of basic...
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