SPX1117M3-L-3-3-TR Datasheet, PDF (1/11 Pages) Exar Corporation – 800mA Low Dropout Voltage Regulator

August 2010
SPX1117
800mA Low Dropout Voltage Regulator
Rev. 2.1.0
GENERAL DESCRIPTION
The SPX1117 is a low power positive-voltage
regulator designed to satisfy moderate power
requirements with a cost effective, small
footprint solution.
This device is an excellent choice for use in
battery-powered applications and portable
computers. The SPX1117 features very low
quiescent current and a low dropout voltage of
1.1V at a full load. As output current
decreases, quiescent current flows into the
load, increasing efficiency. SPX1117 is
available in adjustable or fixed 1.5V, 1.8V,
2.5V, 3.3V and 5V output voltages.
The SPX1117 is offered in 3-pin SOT-223 and
TO-263 surface mount packages.
An output capacitor of 10µF provides
unconditional stability while a smaller 2.2µF
capacitor is sufficient for most applications.
APPLICATIONS
 Desktop PC Servers
 Graphic/Video Cards
 Industrial Equipments
 Power Supplies
FEATURES
 Guaranteed 800mA Output Current
 Guaranteed 1A Peak Current
 Three Terminal Adjustable or Fixed
1.5V, 1.8V, 2.5V, 3.3V and 5V
 Low Quiescent Current
 Low Dropout Voltage of 1.1V at 800mA
 0.1% Line and 0.2% Load Regulation
 Stable with 2.2µF Ceramic Capacitor
 Overcurrent and Thermal Protection
 Lead Free, RoHS Compliant Packages
SOT223 and TO263
FUNCTIONAL DIAGRAM
Fig. 1: SPX1117 Application Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. [phone] – Fax. [phone]