LX6504 查看數據表（PDF） - Microsemi Corporation

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LX6504

Full Bridge Resonant CCFL Controller

Microsemi Corporation 

LX6504

®

Full Bridge Resonant CCFL Controller

TM

PRODUCTION DATASHEET

DESCRIPTION

Microsemi’s LX6504 is a cost reduced, A unique programmable strike

third generation CCFL (Cold Cathode frequency control is provided with

Fluorescent Lamp) controller. The LX6504. By connecting different

integrated controller is optimized to drive components on the strike frequency control

CCFLs using resonant full bridge inverter pin, the user can control the strike

topology.

frequency profile at will.

Resonant full bridge topology provides LX6504 can accept a burst dimming

near sinusoidal waveforms over a wide control signal that is either a DC analog

supply voltage range in order to maximize voltage or a low frequency PWM.

the life of CCFL lamps, control EMI LX6504 also features integrated gate

emissions, and maximize efficiency.

drivers for the four external power

The LX6504 includes safety features MOSFETs.

that limit the transformer secondary An integrated 4V LDO powering all

voltage and protect against fault internal control circuitry greatly simplifies

conditions which include open lamp, and supply voltage requirement.

broken lamp faults etc.

The LX6504 is available in a 20-pin

SOIC package.

KEY FEATURES

• Integrated Gate Drive

• Burst dimming range: >20 to 1

• Soft Rise/Fall For Burst Dimming

Control

• Programmable Strike Frequency

• Programmable Burst Dimming

Frequency

• Programmable Strike Time-out and

Fault Timing Protection

• Operating Status Signal Output

• Fixed Operating Frequency

• Open-Lamp Voltage Protection

APPLICATIONS

• LCD TV

• LCD Monitor

• CCFL Backlight System

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

Protected by U.S. Patents: 5,615,093; 5,923,129; 5,930,121; 6,198,234; 7,112,929; Patents Pending

PACKAGE ORDER INFO

TA (°C) DW

Plastic SOIC 20-Pin

RoHS Compliant / Pb-free

-20 to 85

LX6504IDW

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

(i.e. LX6504IDW-TR)

THERMAL DATA

θJA = 65.8 °C/W

THERMAL RESISTANCE-JUNCTION TO AMBIENT

Junction Temperature Calculation: TJ = TA + (PD x θJA).

The θJA numbers are guidelines for the thermal performance of the

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

Copyright © 2009

Rev.1.0, 2009-09-02

Microsemi

Analog Mixed Signal Group

11861 Western Avenue, Garden Grove, CA. 92841, 800-8776458, 714-898-8121, Fax: 714-893-2570

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