SPX1583T5-L-2.5 datasheet, PDF

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SPX1583T5-L-2.5: DescriptionFixed Positive LDO Regulator, 2.5V, PSSO5, TO-263, 5 PIN; CategoryPower/power management The power supply circuit; File Size25KB，2 Pages; ManufacturerSIPEX; Websitehttp://www.sipex.com/; Environmental Compliance

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SPX1583T5-L-2.5 Overview

Fixed Positive LDO Regulator, 2.5V, PSSO5, TO-263, 5 PIN

SPX1583T5-L-2.5 Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
package instruction	TO-263, 5 PIN
Reach Compliance Code	compliant
JESD-30 code	R-PSSO-G5
JESD-609 code	e3
length	10.287 mm
Humidity sensitivity level	3
Number of functions	1
Number of terminals	5
Maximum output current 1	1.5 A
Maximum output voltage 1	2.55 V
Minimum output voltage 1	2.45 V
Nominal output voltage 1	2.5 V
Package body material	PLASTIC/EPOXY
encapsulated code	TO-263
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	245
Certification status	Not Qualified
Regulator type	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height	4.597 mm
surface mount	YES
Terminal surface	TIN
Terminal form	GULL WING
Terminal pitch	1.7 mm
Terminal location	SINGLE
Maximum time at peak reflow temperature	40
width	9.04 mm
Base Number Matches	1

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SPX1583

1.5A Ultra Low Dropout,

Adjustable and Fixed Voltage Regulator

features

Guaranteed 1.5A Output

Current

Adjustable Output Down to

1.2V from ATX Power Supply

Fixed Output Voltages of 2.5V

and 3.3V

2% Output Accuracy

560mV Dropout Voltage at

1.5A

Extremely Tight Voltage and

Line Regulation

Standard 5-Terminal Low Cost

TO-220 and TO-263

Replacement for Industry

Standard LT1583

description

The SPX1583 is a 1.5A low dropout regulator with 560mV low dropout

voltage. The adjustable version requires only two external resistors to

set the output voltage. The fixed version has a preset output of 2.5V or

3.3V and does not require any external resistors. The SPX1583 fea-

tures a low dropout of 560mV (typ.) and offers fast transient response.

This device is suitable for Pentium

processor applications requiring

2.8V or 2.5V from 3.3V ATX power supplies, where a low current input

voltage 1V greater than the output voltage is needed. With an external

sense pin the load regulation is less than 1mV. This device is an excel-

lent choice for the use in powering low voltage microprocessors that

require a lower dropout, fast transient response to regulate from 3.3V

and 5V supplies. The SPX1583 is also an excellent choice as a post

regulator for switching supplies applications as it offers protection

against over-current faults, reversed input polarity, over temperature

operation and positive and negative transient voltage.

The SPX1583 is offered in industry standard 5 pin TO-220 and

TO-263 packages.

applications

3.3V to 2.8V ATX Power

Supplies

3.3V to 2.9V for Portable

Pentium

Processor

5V to 3.3V VRM Supply

High Efficiency “Green”

Computer Systems

typical application circuit

Adjustable Regulator

3.3V

CTRL

330µF

CTRL

ADJ

10µF

OUT

2.5V

OUT

SPX1583

SENSE

124Ω

2 X 330µF

124Ω

.033uF

(1) V

CTRL

needed when V

< 5V.

(2) V

OUT

= V

REF

(1 + R2/ R1) + I

ADJ

R2.

(3) V

REF

is measured across adjust to sense.

2002 Short Form Catalog

P-123

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