SPX1587 Datasheet, PDF (1/11 Pages) Sipex Corporation – 3A Low Dropout Voltage Regulator Adjustable & Fixed Output, Fast Response

September 2010
GENERAL DESCRIPTION
The SPX1587 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 SPX1587 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. SPX1587 is
available in adjustable or fixed 1.5V, 2.5V,
3.3V and 5.0V output voltages.
The SPX1587 is offered in several 3-pin
surface mount packages: TO-252, TO-220 and
TO-263. An output capacitor of 10μF ceramic
or tantalum provides unconditional stability.
FUNCTIONAL DIAGRAM
SPX1587
3A Low Dropout Voltage Regulator
Rev. 2.0.0
APPLICATIONS
• Desktop PC's Servers
• Powering VGA and Sound Cards
• Adjustable Power Supplies
• Portable Instrumentation
FEATURES
• Guaranteed 3A Output Current
• Three Terminal Adjustable or Fixed
1.5V, 2.5V, 3.3V and 5.0V
• Low Quiescent Current
• Low Dropout Voltage: 1.1V at 3A
• Line Regulation: 0.1%
• Load Regulation: 0.1%
• Stable with 10uF Ceramic Capacitor
• Over Current and Thermal Protection
• Similar to Industry Standard
LT1085/LT1585
• RoHS Compliant Lead Free 3-Pin
TO-220, TO-252 and TO-263 Packages
Fig. 1: SPX1587 Functional Diagram (Adjustable version)
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. [phone] – Fax. [phone]