04303304IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS―I: REGULAR PAPERS, VOL. 54, NO. 9, SEPTEMBER 20071879Full On-Chip CMOS Low-Dropout Voltage RegulatorRobert J. Milliken, Jose Silva-Martínez, Senior Member, IEEE, and Edgar Sánchez-Sinencio, Fellow, IEEEAbstract―This paper proposes a solution to the present bulky external capacitor low-dropout (LDO) voltage regulators with an external capacitorless LDO architecture. The large external capacitor used in typical LDOs is removed allowing for greater power system integration for system-on-chip (SoC) applications. A compensation scheme is presented that provides both a fast transient response and full range alternating current (ac) stability from 0- to 50-mA load current even if the output load is as high as 100 pF. The 2.8-V capacitorless LDO volt……
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