Title :
An ultra low-power capacitor-less LDO with high PSR
Author :
Leo, C.J. ; Raja, M. Kumarasamy ; Je Minkyu
Author_Institution :
Inst. of Microelectron., A*STAR (Agency for Sci., Technol. & Res.), Singapore, Singapore
Abstract :
A compact high PSR Low Drop-Out (LDO) voltage regulator providing a peak load-current (IL) of 100μA is realized in 0.13μm CMOS 1P6M process. Ultra low-power operation is achieved for the power block by realizing a nano-power bandgap reference circuit whose total power consumption including LDO is only just 95nW for 1.2Vsupply. The resistor-less reference circuit with no external capacitor for LDO stability results in a very compact design occupying just 0.033 mm2. The proposed post-layout reference and LDO block consumes only 38nA and 41nA respectively, regulating output at 0.9V with a 1.2V supply.
Keywords :
CMOS integrated circuits; low-power electronics; power capacitors; prosthetic power supplies; reference circuits; voltage regulators; CMOS 1P6M process; IL; LDO block; LDO stability; compact design; compact high PSR Low Drop-Out voltage regulator; current 100 muA; current 38 nA; current 41 nA; external capacitor; nanopower bandgap reference circuit; peak load-current; post-layout reference; power 95 nW; power block; power consumption; resistor-less reference circuit; ultra low-power operation; ultralow-power capacitor-less LDO; voltage 0.9 V; voltage 1.2 V; CMOS integrated circuits; Circuit stability; Logic gates; MOS devices; Regulators; Temperature measurement; Thermal stability; CMOS analog design; LDO; Ultra low-power; bandgap voltage; temperature compensation; voltage reference;
Conference_Titel :
Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO), 2013 IEEE MTT-S International
Conference_Location :
Singapore
DOI :
10.1109/IMWS-BIO.2013.6756187
