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PDF LX6523 Data sheet ( Hoja de datos )
| Número de pieza | LX6523 | |
| Descripción | HIGH PERFORMANCE CCFL CONTROLLER | |
| Fabricantes | Microsemi Corporation | |
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LX6523
®
TM HIGH PERFORMANCE CCFL CONTROLLER
PRODUCTION DATASHEET
DESCRIPTION
KEY FEATURES
The LX6523 is a high perform ance accuracy a nd dynam ic response at
CCFL controller optimized for LCD-TV transient conditions. Furt hermore a soft
and o ther m ulti-lamp LCD d isplay start feature provides m ore reliable
systems. It particularly provides a cost lamp strike and allows effective control
competitive so lution for o ff-PFC of t he possible i nverter st art up s urge
inverter applications.
current.
The con troller prov ides a pair of Lamp dimming operation is also well
push-pull PWM driv e sig nals wit h considered to facilitate co nvenient and
adequate cap acity to d rive a p ush-pull, flexible di mming co ntrol d esign with
half b ridge, or f ull bri dge C CFL synchronization capability.
inverter co nfiguration with the add ition In ad dition, rel iable f ault d etection
of simple external circuitry.
and pr otection funct ions are faci litated
An on-chip r egulator s upplies bot h including open lamp, over voltage, short
the operating voltage for the output gate circuit, and over current prot ection.
drive and bias to the inte rnal control Furthermore, program mable st riking
circuitry. This allo ws a d irect frequency, pr ogrammable strike and
connection of th e co ntroller to th e protection tim ing, and faul t i ndication
system supply extending the voltage up are al l b uilt-in with th e v ery co mpact
to 27V without external regulators.
chip design.
The lam p cu rrent regu lation circu it The device is available in a SOIC
comprises a sim ple and robust cont rol 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
LCD-TV
Multi-Lamp LCD Monitors
CCFL, EEFL, FFL Backlight Systems
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PACKAGE ORDER INFO
TA (°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
θJA = 86 °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. 1.1, 2009-08-10
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: 714-893-2570
Page 1
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