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SPX1117T-L

800mA Low Dropout Voltage Regulator

Exar Corporation 

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. +1 510 668-7000 – Fax. +1 510 668-7001

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