All CMOS Low Drop-Out Regulator with Large Supply Currents for System using Li-ion Battery

Author

Honda, Takashi ; Suzuki, Yasoji ; Kawabata, Kentaro ; Murata, Shinichi

Author_Institution

Tokai Univ., Kanagawa

fYear

2006

fDate

12-15 Dec. 2006

Firstpage

255

Lastpage

258

Abstract

In this paper, low drop-out (LDO) regulator for system using lithium-ion (Li-ion) battery is proposed. The new LDO consists of a current supply circuit (CSC) and a bias voltage generator (BVG). The new LDO can stability converts the battery voltage V_DD from +3.3 V to +4.5 V into the reference voltage V_REF of +3.0 V. The fluctuation rate DeltaV₀ is less than about 1% and the power conversion efficiency eta is around 91% under the conditions of the load operating frequency f of 20 MHz, the draw currents I₀ of 200 mA and the battery voltage V_DD of +3.3 V. Furthermore, the proposal circuits execute very high-efficiency conversion and it is very suitable as LDO regulator for system using Li-ion battery

Keywords

CMOS integrated circuits; lithium; power supply circuits; secondary cells; voltage regulators; 20 MHz; 200 mA; 3 V; 3.3 to 4.5 V; CMOS low drop-out regulator; Li; Li-ion battery; bias voltage generator; current supply circuit; Batteries; Circuit stability; Current supplies; Fluctuations; Frequency conversion; Power conversion; Proposals; Regulators; Time of arrival estimation; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communications, 2006. ISPACS '06. International Symposium on

Conference_Location

Yonago

Print_ISBN

0-7803-9732-0

Electronic_ISBN

0-7803-9733-9

Type

conf

DOI

10.1109/ISPACS.2006.364880

Filename

4212267