LX1692F

®
TM Full Bridge Resonant CCFL Controller
P RODUCTION D ATA S HEET

DESCRIPTION KEY FEATURES

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Microsemi’s LX1692F is a cost The LX1692F regulates the CCFL ƒ Low Stress to Transformers
reduced, third generation CCFL (Cold brightness in three ways: analog ƒ Wide Dimming Range
Analog Dimming: > 3 to 1
Cathode Fluorescent Lamp) controller. dimming, digital dimming, or combined
Digital Dimming : > 20 to 1
The integrated controller is optimized analog and digital dimming methods Combined: > 60 to 1
to drive CCFL’s using resonant full simultaneously to achieve the widest ƒ Programmable Burst Dimming
bridge inverter topology. dimming range (> 60 to 1). Frequency
Resonant full bridge topology The LX1692F can accept a ƒ Programmable Time-Out
provides near sinusoidal waveforms brightness control signal that is either Protection
ƒ Fixed Operating Frequency
over a wide supply voltage range in an analog voltage or a low frequency ƒ Open-Lamp Voltage Protection
order to maximize the life of CCFL PWM. ƒ Soft Rise/Fall Burst Dimming
lamps, control EMI emissions, and The LX1692F also features Control
maximize efficiency. integrated gate drivers for the four ƒ 3% Tolerance Brightness
The LX1692F includes safety external power MOSFETs. Reference Voltage
features that limit the transformer An integrated 4V LDO powering all
secondary voltage and protect against internal control circuitry greatly BENEFITS
fault conditions which include open simplifies supply voltage requirements. ƒ Even Display Light Distribution
lamp, and broken lamp faults. The LX1692F is available in either a ƒ Longer Lamp Life with Optimized
20-Pin TSSOP or SOIC package. Lamp Current Amplitude
ƒ Reduced Operating Voltage
Lowers Corona Discharge and
Prolongs Inverter Life
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com ƒ High “Nits / Watt” Efficiency
Protected by U.S. Patents: 5,615,093; 5,923,129; 5,930,121; 6,198,234; 7,112,929; Patents Pending Makes Less Heat and Brighter
Displays
PRODUCT HIGHLIGHT
APPLICATIONS
ƒ LCD TV
ƒ LCD Monitor

PACKAGE ORDER INFO

LX1692F

Plastic TSSOP Plastic SOIC

TA (°C) PW 20-Pin DW 20-Pin
RoHS Compliant / Pb-free RoHS Compliant / Pb-free
-20 to +85 LX1692FIPW LX1692FIDW
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1692FIPW-TR)

Copyright © 2008 Microsemi

Rev. 1.0, 8/28/2008 Page 1
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
 ®
TM

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INFORMATION

Thank you for your interest in Microsemi® Analog Mixed Signal products.

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or

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Copyright Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570