A capacitor-free CMOS low-dropout voltage regulator

Chia Min Chen*, Chung-Chih Hung

*此作品的通信作者

研究成果: Conference contribution同行評審

13 引文 斯高帕斯(Scopus)

摘要

This paper presents novel frequency compensation techniques for low-dropout (LDO) voltage regulator. An enhanced active feedback frequency compensation is employed to improve its frequency response. This LDO can provide high stability for loading current range up to 100 mA without loading capacitors. Moreover, the total compensation capacitors only require 7 pF for this technique. This allows us to integrate the compensation capacitors within the LDO chip easily. The proposed LDO regulator was designed using TSMC 0.35-μm CMOS technology. With an active area of 0.14 mm2, the quiescent current is only 40 μA. The input voltage is ranged from 1.73 V to 5 V for loading current of 100 mA and the output voltage of 1.5 V. The main advantage of this approach is that the LDO circuit can be stable when we connect external load capacitors with ultra low ESR, or even when we eliminate the load capacitors.

原文English
主出版物標題2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009
頁面2525-2528
頁數4
DOIs
出版狀態Published - 2009
事件2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009 - Taipei, Taiwan
持續時間: 24 5月 200927 5月 2009

出版系列

名字Proceedings - IEEE International Symposium on Circuits and Systems
ISSN(列印)0271-4310

Conference

Conference2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009
國家/地區Taiwan
城市Taipei
期間24/05/0927/05/09

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