An External Capacitor-less Low Drop-Out Regulator with Superior PSR and Fast Transient Response

被引：0

作者：

Ganta, Saikrishna ^{[1
]}

Park, Chang-Joon ^{[2
]}

Gitzel, Daniel ^{[2
]}

Rivera, Rafael ^{[2
]}

Silva-Martinez, Jose ^{[2
]}

机构：

[1] Synaptics, Santa Clara, CA 95054 USA

[2] Texas A&M Univ, Analong & Mixed Signal Ctr, Dept Elect & Comp Engn, College Stn, TX 77843 USA

来源：

2013 IEEE 56TH INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS) | 2013年

关键词：

D O I：

暂无

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：

In this paper, an external capacitor-less low drop-out (LDO) voltage regulator with superior power supply rejection (PSR) and small transient ripple is described. The proposed LDO has the advantages of wide-band PSR and fast transient response while consuming only 18 mu A of quiescent current. Simulation results show that the LDO designed in a mainstream 0.18 mu m CMOS technology presents a PSR better than -55dB up to 1MHz when loaded by a 100pF capacitor. The peak-to-peak undershoots and overshoots are less than 75mV when load current pulses from 0 to 50mA with 1 mu s rise/fall times. Load regulation is around 30mV/mA and output voltage deflection is under 75mV when sweeping the load current in the range 0-50mA.

引用

页码：137 / 140

页数：4

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