RangeMAX錚?/div>
I N T E G R A T E D
P R O D U C T S
LXM1622-12-xx
D
UAL
5W, D
IGITAL
D
IMMING
CCFL I
NVERTER
M
ODULE
P
RELIMINARY
D
ATA
S
HEET
DESCRIPTION
KEY FEATURES
WWW .
Microsemi
.C
OM
RangeMAX錚?Wide Range Dimming,
Dual Output Inverter.
The LMX1622
series of Direct Drive CCFL (Cold
Cathode Fluorescent Lamp) Inverter
Modules are specifically designed for
driving two lamp LCD displays. They are
available in two power and input voltage
ranges.
LMX1622 modules provide the
designer with a vastly superior display
brightness range. This brightness range is
achievable with virtually any LCD
display
.
RangeMAX
Digital
Dimming
Technique.
Digital dimming provides
flicker-free brightness control in any wide
range (100:1+) dimming application.
The modules are available with a dim-
ming input that permits brightness control
from either a DC voltage source or
a PWM signal.
The resultant 鈥渂urst drive鈥?that
energizes the lamp was designed
specifically to ensure that no premature
lamp degradation occurs (See the 鈥淗ow
RangeMAX Works鈥?section).
Input Voltage Range.
The modules
convert the DC voltage from a fixed 12V
supply directly to high frequency, high-
voltage waves required to ignite and
operate CCFL lamps. A 5V input inverter
is also available; LXM1612-05 series.
Direct Drive Technology.
The
modules design is based on a new Direct
Drive topology, which provides a number
of cost and performance advantages.
Additional Features.
Other benefits
of this new topology are fixed-frequency
operation, secondary-side strike-voltage
regulation, and both open and shorted
lamp protection. If lamp fails to strike the
inverter will timeout and shutdown.
RangeMAX Wide Range
Dimming
Fixed 5V input
Easy to Use Brightness Control
Output Short-Circuit Protection
and Automatic Strike-Voltage
Regulation and Timeout
Fixed Frequency Operation
Microamp SLEEP mode
APPLICATIONS
Notebook Sub-Notebook
Computers
Portable Instrumentation
Low Ambient Light
BENEFITS
Smooth, Flicker Free 1-100%
Full-Range Brightness Control
Output Open Circuit Voltage
Regulation Minimizes Corona
Discharge For High Reliability
Power Efficient, 鈥淟ow
Brightness鈥?Capability Allows
For Advanced Power
Management
IMPORTANT:
For the most current data, consult
MICROSEMI鈥檚
website:
http://www.microsemi.com
PRODUCT HIGHLIGHT
D C V o lta g e
S o u rc e
P o te n tio m e te r
PW M
S ig n a l
BRITE
1
2
3
1
2
3
U
N IV E R S A L
D C
D
O R
IM M IN G
P
I
N
PU T
LXM1622-12-
XX
LXM1622-12-
XX
"P W M ", V
,
O T E N T IO M E T E R
MODULE ORDER INFO
P
ART
N
UMBER
L
AMP
C
URRENT
LXM1622-12-01
LXM1622-12-02
LXM1622-12-03
6.5mA
5.5mA
5.5mA
L
AMP RUN
VOLTAGE
O
UTPUT
C
ONNECTOR
JST SM02(8.0)B-BHS-1-TB
JST SM02(8.0)B-BHS-1-TB
Honda QZ-19-A3MYL #02
I
NVERTER
M
ATES
D
IRECTLY
TO
P
ANEL
C
ONNECTORS
BHR-03VS-1
BHR-03VS-1
QZ-19-3F01
500-750
350-550
350-550
Copyright
錚?/div>
2000
Rev. 0.3f, 2003-01-20
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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