PanelMatch錚?/div>
I N T E G R A T E D
P R O D U C T S
LXM1618-05-2x
5V 2.2W CCFL Programmable Inverter Module
P
RELIMINARY
D
ATASHEET
DESCRIPTION
KEY FEATURES
WWW .
Microsemi
.C
OM
The LXM1618-05-2x 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?panels.
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 are include a dimming input
that permits brightness control from either
a DC voltage source, a PWM signal or an
external potentiometer.
LXM1618
modules
unlike
the
LXM1617 series does not provide wide
range 鈥榖urst鈥?mode dimming, rather
dimming is provided by amplitude control
of the output current waveform, this limits
the potential dim range to typically less
than 5:1.
For applications not requiring wide
range dimming, amplitude control results
in lower ripple on the input supply and
reduced
potential
transient
noise
generation. Many STN type panels are
particularly well suited for current
amplitude dimming.
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 3.3V input inverter is also
available (LXM1618-03-2x).
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 and shorted lamp
protection with fault timeout.
Externally Programmable
Maximum Output Current
Easy to Use Brightness
Control
Output Short-Circuit
Protection and Automatic
Strike-Voltage Regulation
and Timeout
Analog Current Amplitude
Dimming Method
Fixed Frequency Operation
Rated From -20 to 70擄C
UL60950 E175910
APPLICATIONS
PDA鈥檚
Portable Instrumentation
Industrial Display Controls
BENEFITS
Compact, Low Profile Design
Mates to Wide Variety of
LCD Panels
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
PRODUCT HIGHLIGHT
U
N IV E R S A L
DC
D
IM M IN G
I
N P U T
"P W M ", V
,
O R
P
O T E N T IO M E T E R
DC Voltage
Source
Potentiom eter
PW M
Signal
2
3
LXM1618-05
LXM1618-05
S
E L E C T A B L E
M
A X IM U M
O
U P U T
C
U R R E N T
3 .5
M
A
T O
5
M
A
RMS
PACKAGE ORDER INFO
P
ART
N
UMBER
LXM1618-05-21
LXM1618-05-22
LXM1618-05-23
Copyright
錚?/div>
2002
Rev. 0.4b 2003-01-16
O
UTPUT
C
ONNECTOR
JST SM02(8.0)B-BHS-1-TB
JST SM02B-BHSS-1-TB
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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