|
|
PDF LXM1621-01 Data sheet ( Hoja de datos )
| Número de pieza | LXM1621-01 | |
| Descripción | DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE | |
| Fabricantes | Microsemi Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LXM1621-01 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
|
No Preview Available !
TH E IN F I N I T E PO W E R O F IN N O VAT I O N
PATENTS PENDING
RangeMAXTM
LXM1621-xx
DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE
PRELIMINARY DATA SHEET
DESCRIPTION
RangeMAX Wide Range Dimming, Dual
Output Inverter. The LXM1621 Direct
DriveTM CCFL (Cold Cathode Fluorescent
Lamp) Inverter Modules are specifically de-
signed for driving LCD backlight lamps.
Similar to the LXM1620, the LXM1621 ex-
cels in applications where critical parameters
include very wide range dimmability, high ef-
ficiency and reliable fail-safe design in a small
form factor. These 12 volt input modules are
specifically designed with desktop and indus-
trial applications in mind.
Unlike the LXM1620 or any traditional
dimming CCFL inverters, the LXM1621 pro-
vides the designer a vastly superior display
brightness range. 1000:1+ brightness range
is achievable with a standard LCD display (see
Product Highlight). Our wide range dimming
provides exceptional display readability at less
than 1% of full brightness, allowing both
power savings and low ambient light operat-
ing capability (i.e. "night readable").
RangeMAX Digital Dimming Tech-
nique. Digital dimming provides flicker-free
brightness control in any wide-range dimming
application. Dimming ratios as great as
1000:1 can be achieved. Incorporation of a
video synchronization feature allows wide
ratio dimming without the display distur-
bances and interference seen with competi-
tive products.
The modules are equipped with a dimming
input that permits brightness control from an
external potentiometer or DC voltage source.
The resultant "burst drive" that energizes the
lamp was designed specifically to ensure that
no premature lamp degradation occurs (see
"How RangeMAX Works" Section).
Fail-safe Feature For Multiple Lamp
Applications. Our multi-output inverters are
designed to keep your application operating
at near normal brightness in the event that a
lamp fails. This allows the display to remain
"on-line" until lamp replacement is conve-
nient.
Direct Drive Technology. The module
design is based on a new Direct Drive topol-
ogy, which provides a number of cost and
performance advantages. The LXM1621-xx
Direct Drive inverters eliminate the classic
resonant inductor and capacitors, thus reduc-
ing cost and allowing a substantial reduction
in module size.
Universal Connector Configuration.
Linfinity's multiple lamp inverters include a
built in connector array for the most com-
mon LCD lamp configurations.
Additional Features. Other benefits of
this new topology are fixed-frequency opera-
tion and secondary-side strike-voltage regu-
lation.
Strike-voltage regulation minimizes corona
discharge in the output transformer and re-
lated circuitry, providing longer life and higher
reliability. All LXM1621 modules feature
both open and shorted lamp protection.
The LXM1621 is fully customizable (elec-
tronically and mechanically) to specific cus-
tomer requirements.
KEY FEATURES
I RangeMAX Wide Range Dimming
I 8V To 18V Input Voltage Range
I Small Form Factor
I Easy To Use Brightness Control
I MicroAmp SLEEP Mode
I Output Short-Circuit Protection And
Automatic Strike-Voltage Regulation
I Fixed Frequency Operation
I Universal Connector Configuration
A P P L I C AT I O N S
I Hi-Brite Displays
I Desktop Displays
I Low Ambient Light Conditions (i.e. Aircraft
Cabins, Automobile)
I Industrial Applications
BENEFITS
I High Efficiency Reduces Heating Problems
I Smooth, Flicker Free 0-100% Full-Range
Brightness Control Gives Your Product A
High Quality Image
I Output Open Circuit Voltage Regulation
Minimizes Corona Discharge For Long Life
And High Reliability
I Power Efficient, "Low Brightness" Capability
Allows For Advanced Power Management
NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.
MODULE ORDER INFORMATION
Part Number
Lamp Run Voltage
Lamp Current
LXM1621-01
LXM1621-02
LXM1621-03
500 - 750VRMS
350 - 500VRMS
350 - 500VRMS
7mA
6mA
6.5mA
Copyright © 2000
Rev. 0.6 2/00
LINFINITY MICROELECTRONICS INC.
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
1
1 page  
RangeMAXTM
PRODUCT DATABOOK 1996/1997
DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE
PRELIMINARY DATA SHEET
CONNECTOR SCHEMATIC
PATENT PENDING
LXM1621-xx
4
3
2
1
CN2
N.C.
1
2
3
CN4
CN1
81
VHI1
VHI2
3
2
1
CN5
1
2
N.C. 3
4
CN3
FIGURE 2 — LXM1621-xx Connector Schematic
Note: CN2 and CN3 (shown with dashed lines) are located on the opposite side of the PCB from CN1, CN4
and CN5. Their pin numbers are shown as viewed looking through the printed circuit board.
Connectors:
CN1 = MOLEX 53261-0890
CN2, CN3 = JST SM04(4.0)B-BHS-1-TB
Mates With:
Pins: 50079-8100*, Housing: 51021-0800
* Loose (-8000, Chain) Recommended #26 AWG wiring
JST BHR-04VS-1
CN4, CN5 = JST SM03(4.0)B-BHS-1-TB
JST BHR-03VS-1
Connection Rules
1. Always install two (2) lamps. Operating with only one lamp may overdrive lamp current at maximum brightness settings.
2. Verify lamp wiring before connecting lamps to the inverter module. Connecting both lamps to one of the two inverter output circuits
will result in reduced brightness. The LXM1621-xx module connectors are wired per industry standard. The lamphot wires (high voltage wires)
are always on pin 1 or 2, and thecold wire (low voltage wire) is always on pin 3 or 4.
FA I L S A F E F E AT U R E F O R M U LT I P L E L A M P O P E R AT I O N S
Our multi-output inverters are designed to keep your application
operating at near normal brightness in the event that a lamp fails.
This allows the display to remain "on-line" until lamp replacement
is convenient.
Linfinity "pairs" the lamps so that if one lamp in the pair breaks,
most of its current is added to the good lamp. CCFLs will respond
with more brightness for a period of time. Operating time in this
mode will be a function of the lamps age but should be typically
in the order of hundreds of hours.
This operating characteristic can provide adequate display
performance for a limited, but useful period of time. Shortening
of the lamp life in this mode is typically not a concern as it is
recommended that all lamps in a display be replaced at the same
time.
IS
Lamps
FIGURE 3 — Dual Output Stage
Copyright © 2000
Rev. 0.6 2/00
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet LXM1621-01.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LXM1621-01 | DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE | Microsemi Corporation |
| LXM1621-02 | DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE | Microsemi Corporation |
| LXM1621-03 | DIGITAL DIMMING DUAL LAMP CCFL INVERTER MODULE | Microsemi Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |