LX8821CDF Microsemi Corporation, LX8821CDF Datasheet

LX8821CDF

Manufacturer Part Number

LX8821CDF

Description

DUAL Channel 2.5A LOW Dropout Regulator

Manufacturer

Microsemi Corporation

Datasheet

1.LX8821CDF.pdf (6 pages)

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Rev. 1.1, 2005-03-09

linear regulator with one fixed and

one adjustable output featuring low-

dropout and high accuracy.

LX8821 accepts two supply voltage

inputs for the V

sections. This configuration reduces

power dissipation by operating the

regulator near dropout (V

VDO = 0.4V @ 2A) while providing

sufficient operating headroom for the

control logic.

2.5A independently with a regulator

design

efficiency by consuming minimal

ground

quiescent current to the load

trimmed at wafer level, enabling

precise output voltages, typically

±1% of its specified value.

IMPORTANT: For the most current data, consult Microsemi’s website: http://www.microsemi.com

The LX8821 is a positive-voltage

Each channel can supply up to

The internal voltage reference is

CONTROL

POWER

maximize

optimized

current

10µF

CONTROL

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

and

efficiency,

for

Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX8821CDF-TR)

0 to 100

and V

PWR

1µF

D E S C R I P T I O N

directing

(°C)

system

-V

POWER

OUT

LX8821

the

PWR

CONTROL

Output V1

proper startup regardless of the

level of V

LX8821 outputs remain off while

Current Protection are integrated

on-chip and operate independently

for each regulator output.

with a wide range of output

capacitance and ESR; typically

10μF tantalum or ceramic on the

outputs is sufficient.

power package with low thermal

resistance and ease of assembly

using surface mount technology.

1.5V

PWR

Power sequencing logic ensures

Thermal

The LX8821 regulator is stable

Microsemi uses a low profile

Microsemi Microelectronics Division

GND

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

Part

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

< 2.2V.

Microsemi

CTRL

ADJ

and

OUT1

OUT2

Adjustable

Output V2

or V

Short

PWR

UAL

33µF

Circuit

The

HANNEL

33µF

RODUCTION DATA

RoHS Compliant

LX8821CDF

2.5A L

7-Pin

Plastic S-Pak

GROUND

A P P L I C A T I O N S / B E N E F I T S

Two Independent Regulated

Outputs

Wide DC Supply Voltage of 3.0V to

10.0V

Accurate Output Voltages

Low Tolerance Line (0.5%) and

Load (0.5%) Regulation

Max. Dropout of 0.6V at Rated

Current

Independent Thermal and Current

Limit Protection

Loop Stability Independent of

Output Capacitor

Type SMT Power Package

ASIC, Memory, I/O

Low Voltage Logic Supplies

Active SCSI Terminators

Battery Charging Circuits

PC Peripherals

Instrumentation

OUT2

OUT1

OUT2

K E Y F E A T U R E S

1.25

ROPOUT

•

HEET

⎡

⎢

⎣

⎤

⎥

⎦

LX8821

EGULATOR

ADJ

•

Page 1

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