LX6504 Datasheet, PDF (1/2 Pages) Microsemi Corporation – Full Bridge Resonant CCFL Controller

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
T_A (°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
θ_JA = 65.8 °C/W
THERMAL RESISTANCE-JUNCTION TO AMBIENT
Junction Temperature Calculation: T_J = T_A + (P_D x θ_JA).
The θ_JA 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: [phone]
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