A 0.18 µm Stability-Enhanced CMOS LDO with Robust Compensation Scheme

Hsuan-I PAN  Chern-Lin CHEN  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E92-C   No.8   pp.1080-1086
Publication Date: 2009/08/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E92.C.1080
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electronic Circuits
Keyword: 
CMOS circuits,  linear regulator,  compensation,  stability,  

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Summary: 
A 0.18 µm 1.5 V/50 mA stability-enhanced low dropout regulator (LDO) is presented. A multi-path error amplifier and a split pass device structure are utilized for pole-zero pair compensation. The proposed LDO can be stable without a load capacitor and also stable with different combinations of load capacitors and equivalent series resistance.