Jun8-07 Rev D

SPX587 Low-Dropout Voltage Regulator

© 2007 Sipex Corporation

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

■

Low Dropout Voltage: 1.1V at 3A

■

Line Regulation: 0.1%

■

Load Regulation: 0.1%

■

Stable with 10uF Ceramic Capacitor

■

Overcurrent and Thermal Protection

■

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

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, 1.8V, 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.

APPLICATIONS

■

Desktop PC's Servers

■

Powering VGA and Sound Cards

■

Cordless Phones

■

Battery Chargers

■

Adjustable Power Supplies

■

Portable Instrumentation

■

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

OUT

3

2

1

SPX1587

3 Pin TO-220

■

Available in RoHS Compliant, Lead Free

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

Sipex corporation

Headquarters and

Sales Office

2 South Hillview Drive

Milpitas, CA 505

TEL: (08) -7500

FAX: (08) 5-700

ORDeRing inFORMATiOn

Sipex Corporation reserves the right to make changes to any products

described herein. Sipex does not assume any liability arising out of the

application or use of any product or circuit described herein; neither

does it convey any license under its patent rights nor the rights of others.

Solved by

TM

PART NUMBER

Accuracy

OUTPUT VOLTAGE

PACKAGE

SPX587R ...................... 2% ........................... Adj ..................................  lead TO-252

SPX587R/TR ................ 2% ........................... Adj ...................................  lead TO-252

SPX587R--5 ............... 2% .......................... .5V .................................  lead TO-252

SPX587R--5/TR ......... 2% .......................... .5V .................................  lead TO-252

SPX587R--8 ............... 2% .......................... .8V .................................  lead TO-252

SPX587R--8/TR ......... 2% .......................... .8V .................................  lead TO-252

SPX587R-2-5 ............... 2% .......................... 2.5V .................................  lead TO-252

SPX587R-2-5/TR ......... 2% .......................... 2.5V .................................  lead TO-252

SPX587R-2-8 ............... 2% .......................... 2.8V .................................  lead TO-252

SPX587R-2-8/TR ......... 2% .......................... 2.8V .................................  lead TO-252

SPX587R-2-85 ............. 2% ......................... 2.85V .................................  lead TO-252

SPX587R-2-85/TR ....... 2% ......................... 2.85V .................................  lead TO-252

SPX587R-- ............... 2% .......................... .V .................................  lead TO-252

SPX587R--/TR ......... 2% .......................... .V .................................  lead TO-252

SPX587R-5-0 ............... 2% .......................... 5.0V .................................  lead TO-252

SPX587R-5-0/TR ......... 2% .......................... 5.0V .................................  lead TO-252

SPX587T ...................... 2% ........................... Adj ...................................  lead TO-2

SPX587T/TR ................ 2% ........................... Adj ...................................  lead TO-2

SPX587T--5 ................ 2% .......................... .5V .................................  lead TO-2

SPX587T--5/TR .......... 2% .......................... .5V .................................  lead TO-2

SPX587T--8 ................ 2% .......................... .8V .................................  lead TO-2

SPX587T--8/TR .......... 2% .......................... .8V .................................  lead TO-2

SPX587T-2-5 ................ 2% .......................... 2.5V .................................  lead TO-2

SPX587T-2-5/TR .......... 2% .......................... 2.5V .................................  lead TO-2

SPX587T-- ................ 2% .......................... .V .................................  lead TO-2

SPX587T--/TR .......... 2% .......................... .V .................................  lead TO-2

SPX587T-5-0 ................ 2% .......................... 5.0V .................................  lead TO-2

SPX587T-5-0/TR .......... 2% .......................... 5.0V .................................  lead TO-2

SPX587U ...................... 2% ........................... Adj ...................................  lead TO-220

SPX587U--5 ............... 2% .......................... .5V .................................  lead TO-220

SPX587U--8 ............... 2% .......................... .8V .................................  lead TO-220

SPX587U-2-5 ............... 2% .......................... 2.5V .................................  lead TO-220

SPX587U-- ............... 2% .......................... .V .................................  lead TO-220

SPX587U-5-0 ............... 2% .......................... 5.0V .................................  lead TO-220

Available in lead free packaging. To order add “-L” suffix to part number.

Example: SPX587T-5.0/TR = standard; SPX587T-L-5.0/TR = lead free

/TR = Tape and Reel

Pack quantity is 500 for TO-2 and 2,000 for TO-252.

For status updates, http://www.sipex.com/productDetails.aspx?varpart=SPX587AR-L

.