LX8584B-33CP Microsemi Analog Mixed Signal Group, LX8584B-33CP Datasheet

LX8584B-33CP

Manufacturer Part Number

LX8584B-33CP

Description

IC REG LDO POS 7A 3.3V TO220

Manufacturer

Microsemi Analog Mixed Signal Group

Datasheet

1.LX8584-00CP.pdf (9 pages)

Specifications of LX8584B-33CP

Regulator Topology

Positive Fixed

Voltage - Output

3.3V

Voltage - Input

Up to 10V

Number Of Regulators

Current - Output

7A (Min)

Operating Temperature

0°C ~ 125°C

Mounting Type

Through Hole

Package / Case

TO-220

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Voltage - Dropout (typical)

Current - Limit (min)

Current page: 1 of 9
Download datasheet (267Kb)

Rev. 1.3, 2005-11-11

Note: xx refers to output voltage, please see table to right. Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX8584-xxCP-TR)

0 to 125

are

positive regulators with a nominal 7A

output current. This product family is

ideally suited for Pentium® Processor

and

requiring fast transient response. The

LX8584A is guaranteed to have <

1.2V at 7A and the LX8584/84B <

1.4V at 7A dropout voltage, making

them ideal to provide well regulated

outputs of 2.5V to 3.6V using a 5V

input

LX8584B also offers ±1% maximum

voltage reference accuracy over

temperature. Fixed versions are also

available and are specified in the

Available Options table below.

IMPORTANT: For the most current data, consult MICROSEMI’s website:

The LX8584/84A/84B series ICs

(°C) Dropout Voltage

low

Power

supply.

220µF

10V

Low ESR

from

Sanyo

P A C K A G E O R D E R I N F O

Thick traces represent high current traces which must be low resistance /

dropout

1.4V

1.2V

PCTM

LX8584A

low inductance in order to achieve good transient response.

75 & 166 MH

3.50

3.38

ADJ

0.1µF

50V

OUT

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

OUT

250pF

addition,

P R O D U C T H I G H L I G H T

three-terminal

PPLICA TION OF THE

SGND FGND

Open

Short

applications

LX1431

JP1

1kΩ

COL

D E S C R I P T I O N

1kΩ

P54C P

REF

75/90/100/133MHz, STND, 3.3V Cache

0.01µF

Plastic TO-220

3 pin

the

2.84kΩ

0.1%

120/166MHz, VRE, 3.3V Cache

Transition DC: 0543

LX8584B-xxCP

LX8584A-xxCP

ROCESSORS

LX8584-xxCP

RoHS Compliant

LX8584A & LX1431

TYPICAL APPLICATION

0.1%

to ensure adequate output current and

controlled short-circuit current. On-chip

thermal limiting provides protection

against any combination of overload

that would create excessive junction

temperatures. The LX8584/84A series

products are available in both the

through-hole versions of the industry

standard 3-pin TO-220 and TO-247

power

Programmable Reference utilzed in

conjunction with the LX8584 7A LDO

products offer precision output voltage

(see application below) and are ideal for

use in VRE applications.

330µF, 6.3V

Oscon Type

from Sanyo

Current limit is trimmed above 7.1A

JP1

Low ESR

21k

(See Table Below)

SING

Integrated Products Division

packages.

3.3V C

Microsemi

http://www.microsemi.com

PLACE IN µP SOCKET CAVITY

IN A

ACHE

1µF x 10

SMD

100µF x 6

AVX TYPE

10V

TPS

The

7A Low Dropout Positive Regualtors

Load

µP

LX1431

RODUCTION

LX8584/A/B-00

LX8584/A/B/-33

Other voltage options may be available –

please contact factory for details.

1.5

1.0

0.5

A V A I L A B L E O P T I O N S

Three Terminal Adjustable or

Fixed Output

Guaranteed 1% Voltage

Accuracy over Temperature

(LX8584B)

Guaranteed < 1.2V Headroom

at 7A (LX8584A)

Guaranteed < 1.4V Headroom

at 7A (LX8584/84B)

Output Current of 7A

Fast Transient Response

1% Voltage Reference Initial

Accuracy

Output Short Circuit Protection

Built-in Thermal Shutdown

Evaluation Board Available:

Request LXE9001 Evaluation

Kit

Pentium™ Processor Supplies

Power PC™ Supplies

Microprocessor Supplies

Low Voltage Logic Supplies

Post Regulator for Switching

Supply

Part #

ATA

K E Y F E A T U R E S

LX8584/84A

A P P L I C A T I O N S

ROPOUT

1.75

Output Current - (A)

UTPUT

HEET

3.5

OLT AGE VS

LX8584x-xx

URRENT

Adjustable

LX8584

Voltage

Output

3.3V

5.25

LX8584A

= 125 °C

Page 1

Related parts for LX8584B-33CP

LX8584B-33CP Summary of contents

Page 1

... In addition, LX8584B also offers ±1% maximum voltage reference accuracy over temperature. Fixed versions are also available and are specified in the Available Options table below. IMPORTANT: For the most current data, consult MICROSEMI’s website: ...

Page 2

Power Dissipation ....................................................................................Internally Limited Input Voltage .................................................................................................................10V Input to Output Voltage Differential..............................................................................10V Maximum Output Current................................................................................................8A Maximum Operating ...

Page 3

... Line Regulation (Note 2) Load Regulation (Note 2) Thermal Regulation Ripple Rejection (Note 3) Quiescent Current LX8584-xx Dropout Voltage LX8584A-xx LX8584B-xx Maximum Output Current Temperature Stability (Note 3) Long Term Stability (Note 3) RMS Output Noise (% OUT (Note 3) Note 2: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation ...

Page 4

TM The LX8584/84A/84B series ICs are easy to use Low-Dropout (LDO) voltage regulators. They have all of the standard self- protection features expected of a voltage regulator: short circuit protection, safe operating area protection and automatic thermal shutdown if the ...

Page 5

TM Overload Recovery (continued) If this limited current is not sufficient to develop the designed voltage across the output resistor, the voltage will stabilize at some lower value, and will never reach the designed value. Under these circumstances, it may ...

Page 6

TM LOAD REGULATION (continued) Even when the circuit is optimally configured, parasitic resistance can be a significant source of error. A 100 mil (2.54 mm) wide PC trace built from 1 oz. copper-clad circuit board material has a parasitic resistance ...

Page 7

TM LX8584/84A/84B (Note A) V OUT IN IN ADJ 10µ improves ripple rejection. 365 Ω should be ≈ ripple frequency. Figure 4 – Improving Ripple Rejection V IN (Note A) TTL Output ...

Page 8

Page 9

TM PRODUCTION DATA – Information contained in this document is proprietary to Microsemi and is current as of publication date. This document may not be modified in any way without the express written consent of Microsemi. Product processing does not ...

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