Title :
300mA adjustable LDO with 10µA ground current
Author :
Stanescu, Cornel ; Iacob, Radu ; Dinca, Cristian ; Caracas, Cristi ; Profirescu, Ovidiu
Author_Institution :
ON Semicond. Romania S.R.L., Bucharest, Romania
Abstract :
This paper presents an adjustable 300mA CMOS LDO built in a double-metal 0.5μm 16V CMOS technology. It uses a low-current bandgap which needs only 1.5μA. It includes a symmetrical op amp configured as voltage follower, having a built-in adaptive bias behavior. The circuit consumes 10μA without load, less than 40μA at full load, and uses a 1.25V voltage reference. Dropout voltage at 300mA is typical 200mV. Input voltage range is 2.3V to 7V.
Keywords :
CMOS integrated circuits; operational amplifiers; CMOS LDO; built-in adaptive bias; current 10 muA; current 300 mA; dropout voltage; ground current; input voltage range; low-current bandgap; size 0.5 mum; symmetrical op amp; voltage 16 V; voltage 2.3 V to 7 V; voltage follower; CMOS integrated circuits; Current measurement; Integrated circuit modeling; Load modeling; Photonic band gap; Semiconductor device modeling; Voltage measurement;
Conference_Titel :
Semiconductor Conference (CAS), 2010 International
Conference_Location :
Sinaia
Print_ISBN :
978-1-4244-5783-0
DOI :
10.1109/SMICND.2010.5650532
