DESIGN OF A PROGRAMMABLE LOW POWER LOW DROP-OUT REGULATOR

Jayanthi Vanama and G.L.Sampoorna

Trainee Engineer, Powerwave Technologies Pvt. Ltd., R&D India 

Intern, CONEXANT Systems Pvt. Ltd.

ABSTRACT

A low power programmable low drop-out regulator capable of providing 1V output has been proposed. The regulator requires a supply voltage of 1.2V and works in the temperature range of -40 to 125 ˚C in nominal corner (i.e, normal doping for PMOS and NMOS Field Effect Transistors), yielding a load regulation of 3%. The output voltage level is controlled externally by means of 2 1-bit control signals. The circuit provides a DC gain of 30 dB and a maximum DC Power Supply Rejection Ratio of -35 dB and a worst case PSRR of -20 dB. Power dissipation in the load is nearly 100 µW.

KEYWORDS

Low Drop-Out, Voltage Regulator, Low Power, Low quiescent current.

Orginal Sourcr URL: http://aircconline.com/vlsics/V4N3/4313vlsics09.pdf

http://airccse.org/journal/vlsi/vol4.html