Jun8-07 Rev D

SPX587 Low-Dropout Voltage Regulator

© 2007 Sipex Corporation

SPX1587

Solved by

TM

3A Low Dropout Voltage Regulator

DESCRIPTION

FEATURES

■

Guaranteed 3A Output Current

■

Three Terminal Adjustable or Fixed

1.5V, 1.8V, 2.5V, 3.3V and 5.0V

■

Low Quiescent Current

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Low Dropout Voltage: 1.1V at 3A

■

Line Regulation: 0.1%

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Load Regulation: 0.1%

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Stable with 10uF Ceramic Capacitor

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Overcurrent and Thermal Protection

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Similar to Industry Standard LT1085/

LT1585

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

applicationsandportablecomputers. TheSPX1587featuresverylowquiescentcurrentandalowdropout

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, 1.8V, 2.5V, 3.3V and 5.0V output voltages.

TheSPX1587isofferedinseveral3-pinsurfacemountpackages:TO-252,TO-220andTO-263.Anoutput

capacitor of 10µF ceramic or tantalum provides unconditional stability.

APPLICATIONS

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Desktop PC's Servers

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Powering VGA and Sound Cards

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Cordless Phones

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Battery Chargers

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Adjustable Power Supplies

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Portable Instrumentation

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SMPS Post-Regulator

FUNCTIONAL DIAGRAM (Adjustable)

+

-

Current Limit

Thermal Limit

AMP

ADJ/GND

+

–

1.25V

_

+

1

2

3

SPX1587

3 Pin TO-263

ADJ/GND

ADJ/GND V

3

2

1

SPX1587

3 Pin TO-220

■

Available in RoHS Compliant, Lead Free

Packages: TO-252, TO-220, and TO-263