LX8815 Microsemi Corporation, LX8815 Datasheet

LX8815

Manufacturer Part Number

LX8815

Description

Dual Channel 1a Low Dropout Regulator

Manufacturer

Microsemi Corporation

Datasheet

1.LX8815.pdf (5 pages)

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Rev. 0.2a, 2000-11-20

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

positive-voltage linear regulator. This

dual regulator has either one fixed

output coupled with an adjustable

output or two fixed outputs.

channel features low-dropout and high

accuracy.

with a flexible power management

solution, minimal printed circuit board

area, and shorter design cycles.

amp independently with a regulator

design optimized for system efficiency

by consuming minimal ground current

and directing quiescent current to the

load.

trimming of the internal

The LX8815 is a dual channel

The LX8815 provides designers

Each channel can supply up to one

The

M I C R O S E M I

G N D

Note: Application circuit above using ceramic capacitors, C

a n d C

2000

LX8815

, C

10 F

0.1

, and C

> 2 F. R1 and R2 used with LX88xx-xx only.

features

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

C O M P A N Y

on-chip

Each

B I A S

voltage reference enabling precise output

voltages, typically 1% of it’s specified

value, while the BiPolar output transistor

has a low dropout voltage even at full

output current (V

Protection are integrated on-chip and

operate independently for each regulator

output.

low-value output capacitor, typically

3.3 F tantalum or 4.7 F ceramic on the

outputs, allowing designers flexibility in

external component selection.

offers maximum power dissipation and

ease of assembly using surface mount

technology.

Thermal and Short Circuit Current

The LX8815 regulator is stable with a

Linfinity’s S-PAK power package

Linfinity Microelectronics Division

1.25V

requires R

R E F

Microsemi

(0.075 to 0.3 ). For Tantalum capacitors: R

< 1.1V typ. @ 1A).

Dual Channel 1A Low Dropout Regulator

RELIMINARY

is not used

Two Independent Regulated

Outputs

Accurate Output Voltages

Max. Dropout of 1.1V at Rated

Current

Independent Thermal and

Current Limit Protection

Low Profile 5 Lead SMT Power

Package

Low Tolerance Line (0.2%) and

Load (0.4%) Regulation

Wide DC Supply Voltage of 4.0V

to 12.0V

Loop Stability Independent of

Output Capacitor Type

5V to 3.3V Linear Regulator

Low Voltage Logic Supplies

Active SCSI Terminators

Battery Charging Circuits

Instrumentation

PC Peripherals

OUT

. 1

4.7 F

Adjustable or Fixed

4.7 F

ADJ

LX8815

O U T 1

O U T 2

Page 1

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