Journal
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
Volume 57, Issue 2, Pages 80-84Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCSII.2009.2038630
Keywords
Active feedback; analog circuits; capacitor-less low dropout (LDO); dc-dc regulator; low-dropout (LDO) voltage regulators
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Funding
- Hong Kong SAR Government, China [617707]
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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-mu m 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 I-Q of 20 mu A.
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