An output-capacitorless linear regulator for integrated portable power solutions

Jacob Day, Donald Y.C. Lie

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

This paper proposes a linear regulator that offers a very fast transient response of less than 150ns for a load step with a 100ns rise time. The voltage regulator is designed so that no output capacitor is needed to save die area and system cost. Total on-chip capacitance is a mere 3pF for this design. It also operates at very high power efficiency with only a 39μA quiescent current. This design can be ideal for portable applications powered by a Li-ion battery with a small to moderate digital core, such as a power management IC for cellular phones. The process used in this work is a mature 0.35μm BiCMOS process commonly employed for power management devices by Texas Instruments.

Original languageEnglish
Title of host publication54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011
DOIs
StatePublished - 2011
Event54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011 - Seoul, Korea, Republic of
Duration: Aug 7 2011Aug 10 2011

Publication series

NameMidwest Symposium on Circuits and Systems
ISSN (Print)1548-3746

Conference

Conference54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011
Country/TerritoryKorea, Republic of
CitySeoul
Period08/7/1108/10/11

Keywords

  • Capacitor-less
  • low-dropout regulator (LDO)
  • transient response

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