lx23108al Microsemi Corporation, lx23108al Datasheet

lx23108al

Manufacturer Part Number

lx23108al

Description

8 Ports Led Back Light High Voltage Driver

Manufacturer

Microsemi Corporation

Datasheet

1.LX23108AL.pdf (2 pages)

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Download datasheet (73Kb)

control of the LED strings supply

LX23108AL - is a compact 8 Ports

White or RGB back light LED Driver,

to be used in large display notebooks,

LCD monitors, and TV sets.

designed to work together with the

LX24132 LED Controller as a chipset,

driving up to 32 LED strings with a

variable current of up to 200mA peak.

In addition, the LX23108AL provides

the LX24132 LED Controller with its

ports voltage samples, that facilitate the

voltage through an external DC/DC

converter;

dissipation while regulating the LED

currents for all 8 strings. Current

regulation is maintained within a ± 3

percent.

The LX23108AL LED Driver includes

8 High Bandwidth Current Limiter

Cells with PWM Control (ON/OFF

Signal).

The chip is designed to operate with

external

configuration

flexibility for system designers when

scaling up or down the LED currents for

meeting a wide range of high accuracy

application requirements.

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

http://www.microsemi.com

-40 to 85

Sense

(°C)

Note: Available in Tape & Reel. Append the letters “TR” to the part number.

minimizing

provides

Resistors.

MLPQ

PACKAGE ORDER INFO

the

D E S C R I P T I O N

maximum

(i.e. LX23108ALILQ-TR)

Plastic 5 x5mm 32 pin

power

RoHS Compliant / Pb-free / MSL 1

Such

It is

LX23108ALILQ

The LX23108AL LED Driver enables

a wide dimming range, achieved

through a combination of LED current

amplitude

control. In addition, the chipset

provides a thermally robust solution

through advanced system control;

including Drain Voltage Sensing for

Open/Shorts events and per string

Thermal Protection monitoring.

The LX23108AL LED Driver is

housed in a 32 pin, 5mmx5mm QFN

package.

and

PWM

duty-cycle

8 Ports LED Back Light High Voltage Driver

device/pc-board system. All of the above assume no ambient airflow.

The θ

•

Junction Temperature Calculation: T

White LED, or RGB Backlight Driver for

large size display panels

Up to 8 LED strings with ± 0.5% precision

current matching.

Wide dimming ratio with PWM duty-cycle

and LED current amplitude controls.

12 bit PWM duty-cycle resolution –

controlled by LX24132 LED Controller.

8 bit resolution for LED current setting –

controlled by LX24132 LED Controller.

Open string, short LED and Over-

Temperature protection per individual

channel.

LCD Monitor and TV

Large Signage Display

THERMAL RESISTANCE

numbers are guidelines for the thermal performance of the

27.5 ° C/W According to the JESD51-7

DATA SHEET

K E Y F E A T U R E S

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

T H E R M A L D A T A

JUNCTION TO AMBIENT

LX23108AL

= T

+ (P

x θ

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lx23108al Summary of contents

Page 1

... LX23108AL - is a compact 8 Ports White or RGB back light LED Driver used in large display notebooks, LCD monitors, and TV sets designed to work together with the LX24132 LED Controller as a chipset, driving LED strings with a variable current 200mA peak ...

Page 2

... PWM5 6 PWM6 7 PWM7 RoHS / Pb-free Matte Tin Finish / MSL LX23108AL DATA SHEET PSEL_IN 24 THERM_OUT 23 VDMEAS 22 VIO 21 Exposed Pad Connected to AGND VREF 20 VCC 19 PSEL_CLK 18 PSEL_OUT ...

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