
P
RODUCTION
D
ATASHEET
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright
2002
Rev. 1.0b, 2005-01-17
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PanelMatch
LXM1624-12-4x
12V Dual 4W CCFL Programmable Inverter Module
I N T E G R A T E D P R O D U C T S
D E S C R I P T I O N
The LXM1624-12-4x is a Dual 4W
Output Direct Drive CCFL (Cold
Cathode
Fluorescent
Module specifically designed for driving
LCD backlight lamps. It is ideal for
driving typical 6.4” to 10.4” TFT panels.
The modules are available with a
dimming input that permits brightness
control from either a DC voltage source or
a PWM signal or external Potentiometer.
The maximum output current is externally
programmable over a range of 5 to 6.5mA
in 0.5mA steps to allow the inverter to
properly match to a wide array of LCD
panel lamp current specifications.
LXM1624
modules
LXM1623 series does not provide wide
range ‘burst’ 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.
Lamp)
Inverter
unlike
the
For applications not requiring wide
range dimming, amplitude control results
in lower ripple on the input supply and
reduced
potential
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.
The modules design is based on
Microsemi’s new LX1689 backlight
controller, which provides a number of
cost and performance advantages due to
the controller’s 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.
transient
noise
IMPORTANT:
For the most current data, consult
MICROSEMI
’s website:
http://www.microsemi.com
Protected By U.S. Patents: 5,923,129; 5,930,121; 6,198,234; Patents Pending
K E Y F E A T U R E S
Externally Programmable
Maximum Output Current
Easy to Use Brightness Control
Analog Current Amplitude
Dimming Method
Output Open/Short-Circuit
Protection and Automatic Strike-
Voltage Regulation and Timeout
Fixed Frequency Operation
Rated From -20 to 70°C
UL60950 E175910
A P P L I C A T I O N S
High Brightness Displays
Portable Instrumentation
Desktop Displays
Industrial Display Controls
B E N E F I T S
Compact, Low Profile Design
Programmable output current
allows inverter to mate with a
wide variety of LCD panel’s
specifications
Output Open Circuit Voltage
Regulation Minimizes Corona
Discharge For High Reliability
P R O D U C T H I G H L I G H T
DC Voltage
Source
Potentiometer
PWM
Signal
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ATES
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P
ANEL
C
ONNECTORS
JST BHR-03VS-1
JST BHSR-02VS-1
Honda QZ-19-3F01
LXM1624-12-41
LXM1624-12-42
LXM1624-12-43
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
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