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Title: A capacitor-less CMOS active feedback low-dropout regulator with slew-rate enhancement for portable on-chip application
Authors: Ho, Edward N. Y.
Mok, Philip
Keywords: Active feedback
Analog circuits
Capacitor-less low dropout (LDO)
Dc–dc regulator
Low-dropout (LDO) voltage regulators
Issue Date: Feb-2010
Citation: IEEE transactions on circuits and systems. II, Express briefs, vol. 57, no. 2, February 2010, p. 80-84.
Abstract: A low-dropout regulator for on-chip application with active feedback and a slew-rate enhancement circuit to minimize compensation capacitance and speed up transient response is presented in this brief. The idea has been modeled and experimentally verified in a standard 0.35-μm CMOS process. The total compensation capacitance is 7 pF. From experimental results, the implemented regulator can operate from a supply voltage of 1.8–4.5 V with a minimum dropout voltage of 0.2 V at a maximum 100-mA load and IQ of 20 μA.
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