150 mA LDO with self-adjusting frequency compensation scheme

被引：10

作者：

Chen, C. ^{[1
]}

Wu, J. H. ^{[1
]}

Wang, Z. X. ^{[1
]}

机构：

[1] Southeast Univ, Natl ASIC Res Ctr, Nanjing, Peoples R China

来源：

ELECTRONICS LETTERS | 2011年 / 47卷 / 13期

关键词：

D O I：

10.1049/el.2011.0771

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A low-drop-out regulator with dynamic biased buffers for self-adjusting frequency compensation is presented. The proposed buffer, based on g(m)-boost elements, keeps the second pole beyond the unity-gain frequency of the loop by dynamically changing its bias current according to the load condition. The LDO has a quiescent current of 23 mu A and is able to deliver 150 mA load current. With wide loop bandwidth and adequate phase margin, improved transient response with 38 mV output variation is achieved under a 0-100 mA load current switching test.

引用

页码：767 / U60

页数：2

共 5 条

[1] A transient-enhanced low-quiescent current low-dropout regulator with buffer impedance attenuation [J].

Al-Shyoukh, Mohammad ;

Lee, Hoi ;

Perez, Raul .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2007, 42 (08) :1732-1742

[2] Reverse Nested Miller Compensation Using Current Buffers in a Three-Stage LDO [J].

Garimella, Annajirao ;

Rashid, M. Wasequr ;

Furth, Paul M. .

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2010, 57 (04) :250-254

[3] An active-frequency compensation scheme for CMOS low-dropout regulators with transient-response improvement [J].

Lin, Hung-Chih ;

Wu, Hsiang-Han ;

Chang, Tsin-Yuan .

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2008, 55 (09) :853-857

[4]

MORA R, 1998, IEEE J SOLIDSTATE CI, V33, P36

[5] 25 mA LDO with-63 dB PSRR at 30 MHz for WiMAX [J].

Yeung, S. ;

Guo, J. ;

Leung, K. N. .

ELECTRONICS LETTERS, 2010, 46 (15) :1080-U57

← 1 →