Title :
0.5A fast CMOS LDO
Author :
Stanescu, Cornel ; Iacob, Radu ; Dinca, Cristian ; Caracas, Cristi ; Profirescu, Ovidiu
Author_Institution :
ON Semicond. Romania S.R.L., Bucharest, Romania
Abstract :
The paper presents a 0.5 A fast response CMOS LDO built in a double-metal 0.5 mum 5.5 V CMOS technology. It includes a symmetrical op amp configured as voltage follower, having a built-in adaptive bias behavior. The frequency compensation is cascode-Miller type. The circuit consumes 55 muA without load, less than 90 muA at full load, and uses a 1 V voltage reference. Output current capability is 0.5 A, while dropout voltage value is typical 300 mV.
Keywords :
CMOS integrated circuits; operational amplifiers; adaptive bias behavior; cascode-Miller type; double-metal CMOS technology; fast CMOS LDO; fast response CMOS LDO; frequency compensation; symmetrical op amp; voltage follower; CMOS technology; Capacitors; Cellular phones; Circuits; Frequency; MOS devices; Operational amplifiers; Paper technology; Power transistors; Voltage;
Conference_Titel :
Semiconductor Conference, 2009. CAS 2009. International
Conference_Location :
Sinaia
Print_ISBN :
978-1-4244-4413-7
DOI :
10.1109/SMICND.2009.5336674
