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LX1692A 데이터시트 PDF




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부품번호 LX1692A 기능
기능 Full Bridge Resonant CCFL Controller
제조업체 Microsemi Corporation
로고 Microsemi Corporation 로고


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LX1692A 데이터시트, 핀배열, 회로
www.DataSheet4U.com
TM
LX1692A
® Full Bridge Resonant CCFL Controller
PRODUCTION DATA SHEET
DESCRIPTION
Microsemi’s LX1692A is a cost The LX1692A regulates the CCFL
reduced, third generation Direct Drive brightness in three ways: analog
CCFL (Cold Cathode Fluorescent dimming, digital dimming, or combined
Lamp) controller. The integrated analog and digital dimming methods
controller is optimized to drive simultaneously to achieve the widest
CCFL’s using resonant full bridge dimming range (> 60 to 1).
inverter topology.
The LX1692A can accept a
Resonant full bridge topology brightness control signal that is either
provides near sinusoidal waveforms an analog voltage or a direct low
over a wide supply voltage range in frequency PWM.
order to maximize the life of CCFL The LX1692A also features
lamps, control EMI emissions, and integrated gate drivers for the four
maximize efficiency. This new archi- external power MOSFETs.
tecture also provides a wide dimming An integrated 4V LDO powers all
range.
internal control circuitry greatly
The LX1692A includes safety simplifying supply voltage require-
features that limit the transformer ments.
secondary voltage and protect against The LX1692A is available in a 20-
fault conditions which include open Pin TSSOP.
lamp, broken lamp and short-circuit
faults.
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; Patents Pending
KEY FEATURES
ƒ For Wide Voltage Range Inverter
Application (7V to 22V)
ƒ Patent resonant strike for
unsurpassed striking power
combined with best efficiency
ƒ Low Stress to transformers
ƒ Excellent open circuit voltage
regulation reduces transformer
breakdown voltage requirements
while striking higher voltage
lamps
ƒ One inverter for multiple panel
types
ƒ Wide Dimming Range
Analog Dimming: >3 to 1
Digital Dimming : >20 to 1
Combined: >60 to 1
ƒ Fool-Proof Striking
ƒ Programmable Burst Dimming
Frequency
ƒ Programmable Time Out
Protection
ƒ Fixed Operating Frequency
ƒ Open lamp voltage protection,
Short lamp protection, Arc
Protection1
ƒ Compatible with Existing
Transformers
BENEFITS
ƒ Even Display Light Distribution
ƒ Longer Lamp Life with Optimized
Lamp Current Amplitude
ƒ Reduced Operating Voltage
Lowers Corona Discharge and
Prolongs Module Life
ƒ High “Nits / Watt” Efficiency
Makes Less Heat and Brighter
Displays
APPLICATIONS
ƒ Notebook PC
PACKAGE ORDER INFO
TA (°C)
-20 to +85
Plastic TSSOP
PW 20-Pin
RoHS Compliant / Pb-free
LX1692AIPW
Note: Available in Tape & Reel. Append the letters “TR” to the
part number. (i.e. LX1692AIPW-TR)
1 Arc protection is provided if the arcing level is enough to be trigged.
Copyright © 2004
Rev. 1.1, 2/27/2006
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1





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관련 데이터시트

부품번호상세설명 및 기능제조사
LX1692

Full Bridge Resonant CCFL Controller

Microsemi Corporation
Microsemi Corporation
LX1692A

Full Bridge Resonant CCFL Controller

Microsemi Corporation
Microsemi Corporation

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