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I N T E G R A T E D
P R O D U C T S
LXM1617-03-2x
3.3V 2.2W CCFL Programmable Inverter Module
P
RODUCTION
D
ATASHEET
DESCRIPTION
KEY FEATURES
WWW .
Microsemi
.C
OM
The LXM1617-03-2x is a Single
Output 2.2W Direct Drive鈩?CCFL (Cold
Cathode Fluorescent Lamp) Inverter
Module specifically designed for driving
LCD backlight lamps. It is ideal for
driving typical 3.9鈥?to 6.4鈥?TFT panels.
LXM1617 modules provide the
designer with a vastly superior display
brightness range. This brightness range is
achievable with virtually any LCD display.
The maximum output current is
externally programmable over a range of
3.5 to 5mA in 0.5mA steps to allow the
inverter to properly match to a wide array
of LCD panel lamp current specifications.
The modules include a dimming input that
permits brightness control from a dc
voltage source, a PWM signal or an
external potentiometer.
RangeMAX
Digital
Dimming
Technique provides flicker-free brightness
control in any wide range typically (50:1+)
dimming application.
The resultant 鈥渂urst drive鈥?that
energizes the lamp was designed
specifically to ensure that no premature
lamp degradation occurs, while allowing
significant power savings at lower dim
levels.
The modules convert DC voltage from
the system battery or AC adapter directly
to high frequency, high-voltage waves
required to ignite and operate CCFL
lamps. A 5V input inverter is also
available (LXM1617-05-2x).
The modules design is based on
Microsemi鈥檚 new LX1689 backlight
controller, which provides a number of
cost and performance advantages due to
the controller鈥檚 high level of integration.
Other benefits of this new topology
are stable fixed-frequency operation,
secondary-side strike-voltage regulation
and both open/shorted lamp protection
with fault timeout.
Externally Programmable
Maximum Output Current
Easy to Use Brightness
Control
Output Short-Circuit Protection
and Automatic Strike-Voltage
RangeMAX Wide Range
Dimming
Regulation and Timeout Rated
From -20 to 70擄C
UL60950 E175910
APPLICATIONS
PDA鈥檚
Portable Instrumentation
Industrial Display Controls
BENEFITS
Smooth, Flicker Free 2%-
100% Full-Range Brightness
Control
Programmable output current
allows inverter to mate with a
wide variety of LCD panel鈥檚
specifications
Output Open Circuit Voltage
Regulation Minimizes Corona
Discharge For High Reliability
IMPORTANT:
For the most current data, consult
MICROSEMI鈥檚
website:
http://www.microsemi.com
Protected by U.S. Patents: 5,923,129; 5,930,121; 6,198,234 Patents Pending
PRODUCT HIGHLIGHT
U
N IV E R S A L
D
IM M IN G
I
N P U T
"P W M ", V
DC
,
OR
P
O T E N T IO M
ETER
DC Voltage
Source
Potentiom eter
PW M
Signal
3
LXM1617-03-2
X
LXM1617-03-2
X
S
ELECTABLE
M
A X IM U M
TO
O
UPUT
RMS
C
URRENT
3 .5
M
A
5
M
A
PACKAGE ORDER INFO
1
2
P
ART
N
UMBER
LXM1617-03-21
LXM1617-03-22
LXM1617-03-23
Copyright
漏
2002
Rev. 1.0b, 2005-01-14
O
UTPUT
C
ONNECTOR
JST SM02(8.0)B-BHS-1-TB or Yeon Ho 20015WR-05A00
JST SM02B-BHSS-1-TB or Yeon Ho 35001WR-02A00
Honda QZ-19-A3MYL #02
I
NVERTER
M
ATES
D
IRECTLY
TO
P
ANEL
C
ONNECTORS
JST BHR-03VS-1
JST BHSR-02VS-1
HONDA QZ-19-3F01
Page 1
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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