LX6523 Datasheet, PDF (1/2 Pages) Microsemi Corporation – TM HIGH PERFORMANCE CCFL CONTROLLER

LX6523
®
TM
HIGH PERFORMANCE CCFL CONTROLLER
PRODUCTION DATASHEET
DESCRIPTION
KEY FEATURES
The LX6523 is a high performance accuracy and dynamic response at
CCFL controller optimized for LCD-TV transient conditions. Furthermore a soft
and other multi-lamp LCD display start feature provides more reliable
systems. It particularly provides a cost lamp strike and allows effective control
competitive solution for off-PFC of the possible inverter start up surge
inverter applications.
current.
The controller provides a pair of Lamp dimming operation is also well
push-pull PWM drive signals with considered to facilitate convenient and
adequate capacity to drive a push-pull, flexible dimming control design with
half bridge, or full bridge CCFL synchronization capability.
inverter configuration with the addition In addition, reliable fault detection
of simple external circuitry.
and protection functions are facilitated
An on-chip regulator supplies both including open lamp, over voltage, short
the operating voltage for the output gate circuit, and over current protection.
drive and bias to the internal control Furthermore, programmable striking
circuitry. This allows a direct frequency, programmable strike and
connection of the controller to the protection timing, and fault indication
system supply extending the voltage up are all built-in with the very compact
to 27V without external regulators.
chip design.
The lamp current regulation circuit The device is available in a SOIC
comprises a simple and robust control narrow body surface mount packages in
loop design with good regulation
the industrial temperature range.
• Push-Pull Output to Provide Low
Cost Solution for Multiple Topology
Configuration
• 0.6A Peak Source and Sink Drive
Current
• 6V to 27V Power Rail operation (36V
Absolute Maximum)
• On Chip Regulator with Under
Voltage Lock Out Protection
• Soft Start Control
• Programmable Strike Time, Fault
Time, Strike Frequency, and Burst
Dimming Frequency
• Burst Dimming Brightness Control
• Provide Optimized Solution for Off
PFC Inverter Applications
APPLICATIONS
ƒ LCD-TV
ƒ Multi-Lamp LCD Monitors
ƒ CCFL, EEFL, FFL Backlight Systems
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PACKAGE ORDER INFO
T_A (°C)
D
Plastic SOIC 14 Pin
RoHS Compliant / Pb-free
-40 to 85
LX6523ID
Note: Available in Tape & Reel. Append the letters “TR” to the part number.
(i.e. LX6523ID-TR)
THERMAL DATA
θ_JA = 86 °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. 1.1, 2009-08-10
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: [phone]
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