Soft-start low voltage CMOS LDO

Author

Stanescu, Cornel ; Dinca, Cristian ; Iacob, Radu

Author_Institution

Stand. Products Group, ON Semicond. Romania S.R.L. Bucharest, Bucharest, Romania

Volume

2

fYear

2013

fDate

14-16 Oct. 2013

Firstpage

185

Lastpage

188

Abstract

The paper presents a soft-start low voltage CMOS LDO. A double-reference bandgap was developed to provide the soft-start feature. The first reference is quicker and drives the start-up circuit, while the second is slower and, after being divided, drives the LDO core. This circuit technique allows the reduction of the supply voltage and the control of the output voltage rise time through an external capacitor in order to reduce the inrush current at start-up. Also, there is no overshoot on the output voltage at start-up, even for large capacitive loads.

Keywords

CMOS analogue integrated circuits; low-power electronics; voltage regulators; LDO core; capacitive load; circuit technique; double-reference bandgap; inrush current reduction; low-drop-out voltage regulators; output voltage rise time; soft-start feature; soft-start low-voltage CMOS LDO; start-up circuit; supply voltage reduction; CMOS integrated circuits; Capacitors; Photonic band gap; Resistors; Surges; Transistors; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Conference (CAS), 2013 International

Conference_Location

Sinaia

ISSN

1545-827X

Print_ISBN

978-1-4673-5670-1

Electronic_ISBN

1545-827X

Type

conf

DOI

10.1109/SMICND.2013.6688650

Filename

6688650