Copyright © 2008
Rev. 1.0, 8/28/2008
reduced, third generation CCFL (Cold
Cathode Fluorescent Lamp) controller.
The integrated controller is optimized
to drive CCFL’s using resonant full
bridge inverter topology.
provides near sinusoidal waveforms
over a wide supply voltage range in
order to maximize the life of CCFL
lamps, control EMI emissions, and
maximize efficiency.
features that limit the transformer
secondary voltage and protect against
fault conditions which include open
lamp, and broken lamp faults.
IMPORTANT: For the most current data, consult MICROSEMI’s website:
Protected by U.S. Patents: 5,615,093; 5,923,129; 5,930,121; 6,198,234; 7,112,929; Patents Pending
Microsemi’s LX1692F is a cost
Resonant
The
TM
LX1692F
full
bridge
includes
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
P R O D U C T H I G H L I G H T
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1692FIPW-TR)
-20 to +85
T
A
D E S C R I P T I O N
topology
(°C)
safety
PW
brightness
dimming, digital dimming, or combined
analog and digital dimming methods
simultaneously to achieve the widest
dimming range (> 60 to 1).
brightness control signal that is either
an analog voltage or a low frequency
PWM.
integrated gate drivers for the four
external power MOSFETs.
internal
simplifies supply voltage requirements.
20-Pin TSSOP or SOIC package.
The LX1692F regulates the CCFL
The
The
An integrated 4V LDO powering all
The LX1692F is available in either a
RoHS Compliant / Pb-free
P A C K A G E O R D E R I N F O
Analog Mixed Signal Group
Plastic TSSOP
20-Pin
LX1692FIPW
LX1692F
LX1692F
control
®
Microsemi
http://www.microsemi.com
in
three
circuitry
can
Full Bridge Resonant CCFL Controller
also
ways:
accept
features
greatly
DW
analog
P
RODUCTION
RoHS Compliant / Pb-free
a
Plastic SOIC
20-Pin
LX1692FIDW
Low Stress to Transformers
Wide Dimming Range
Programmable Burst Dimming
Frequency
Programmable Time-Out
Protection
Fixed Operating Frequency
Open-Lamp Voltage Protection
Soft Rise/Fall Burst Dimming
Control
3% Tolerance Brightness
Reference Voltage
Even Display Light Distribution
Longer Lamp Life with Optimized
Lamp Current Amplitude
Reduced Operating Voltage
Lowers Corona Discharge and
Prolongs Inverter Life
High “Nits / Watt” Efficiency
Makes Less Heat and Brighter
Displays
LCD TV
LCD Monitor
D
Analog Dimming: > 3 to 1
Digital Dimming : > 20 to 1
Combined: > 60 to 1
ATA
K E Y F E A T U R E S
A P P L I C A T I O N S
B E N E F I T S
S
HEET
LX1692F
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