LXM1621-04 MICROSEMI, LXM1621-04 Datasheet

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LXM1621-04

Manufacturer Part Number
LXM1621-04
Description
Manufacturer
MICROSEMI
Datasheet

Specifications of LXM1621-04

Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
22
Lead Free Status / Rohs Status
Not Compliant
Copyright © 2000
Rev. 1.0a, 2005-02-07
(Cold
Inverter
designed for driving two lamp LCD
backlight displays.
LXM1621 excels in applications where
critical parameters include very wide
range dimmability, high efficiency, and
reliable fail-safe design in a small form
factor.
specifically designed with desktop and
industrial applications in mind.
dimming CCFL inverters, the LXM1621
provides the designer a vastly superior
display
brightness range is achievable with a
standard LCD display (see Product
Highlight).
provides exceptional display readability at
less than 1% of full brightness, allowing
both power savings and low ambient light
operating capability(i.e. “night readable”).
brightness control in any wide-range
dimming application.
The LXM1621 Direct Drive™ CCFL
Similar
Unlike the LXM1620 or any traditional
Digital dimming provides flicker-free
IMPORTANT: For the most current data, consult MICROSEMI’s website:
Protected By U.S. Patents: 5,923,129; 5,930,121; Patents Pending
Cathode
brightness
These 12 volt modules are
I N T E G R A T E D
Modules
to
Our wide range dimming
the
Fluorescent
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
range.
are
LXM1620,
LXM1621-01
specifically
D E S C R I P T I O N
100:1+
Lamp)
P R O D U C T S
P
LXM1621-02
LXM1621-03
LXM1621-04
ART
the
U
N IV E R S A L
(UL60950 E175910)
N
ronization feature allows wide ratio
dimming without the display disturbances
and interference seen with competitive
products.
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
the “How RangeMAX works” section).
Direct Drive topology, which provides a
number
advantages.
include a built in connector array for the
most common LCD lamp configurations.
fixed-frequency operation and secondary-
side strike-voltage regulation.
(electronically
specific customer requirements.
UMBER
P R O D U C T H I G H L I G H T
Linfinity Microelectronics Division
V
Incorporation of
The modules are equipped with a
The module design is based on a new
Linfinity’s multiple lamp inverters
Other benefits of this new topology are
The LXM1621 is fully customizable
D C
MODULE ORDER INFO
D C V oltage
O R
S o urce
Microsemi
of
http://www.microsemi.com
P
O T E N T IO M E T E R
RangeMAX™
D
cost
IM M IN G
and
P o tentiom eter
BRITE
C
and
D
mechanically)
a
URRENT
L
6.5mA
IGITAL
7mA
6mA
5mA
AMP
video
performance
I
N P U T
D
IMMING
P
L
RODUCTION
synch-
AMP RUN VOLTAGE
D
to
UAL
L
500-750
350-550
350-550
470-640
AMP
D
CCFL I
ATA
RangeMAX Wide Range Dimming
8V to 16V Input Voltage Range
Small Form Factor
Easy To Use Brightness Control
MicroAmp SLEEP Mode
Output Short-Circuit Protection
And Automatic Strike-Voltage
Regulation
Fixed Frequency Operation
Universal Connector
Configuration
Hi-Brite Displays
Desktop Displays
Low Ambient Light Conditions
(i.e. Aircraft Cabins, Automobile)
Industrial Applications
High Efficiency Reduces Heating
Problems
Smooth, Flicker Free 0-100% Full-
Range Brightness Control Gives
Your Product A High Quality
Image
Output Open Circuit Voltage
Regulation Minimizes Corona
Discharge For Long Life And High
Reliability
Power Efficient, “Low Brightness”
Capability Allows For Advanced
Power Management
K E Y F E A T U R E S
S
APPLICATIONS
(RMS)
NVERTER
HEET
BENEFITS
LXM1621-xx
M
ODULE
Page 1

Related parts for LXM1621-04

LXM1621-04 Summary of contents

Page 1

... MODULE ORDER INFO L AMP P N ART UMBER C URRENT 7mA (UL60950 E175910) LXM1621-02 6mA LXM1621-03 6.5mA LXM1621-04 5mA Microsemi Linfinity Microelectronics Division LXM1621- CCFL I M IMMING UAL AMP NVERTER ODULE RODUCTION ATA HEET RangeMAX Wide Range Dimming synch 16V Input Voltage Range ...

Page 2

... Unless otherwise specified, these specifications apply over the recommended operating conditions and 25°C ambient temperature for the LMX1621-xx. Parameter OUTPUT PIN CHARACTERISTICS Full Brightness Current LXM1621-01 LXM1621-02 LXM1621-03 LXM1621-04 Minimum Lamp Current (Per Lamp) (Notes 2 & 3) Lamp Start Voltage Operating Frequency Copyright © 2000 Rev. 1.0a, 2005-02-07 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 RangeMAX™ ...

Page 3

... SLEEP V SYNC(HI) V SYNC(LO SYNC 12V , SLEEP < 0.8V IN(MIN Description < 16V) IN SLEEP < VIN = ON, -0.3V < < 150Hz SYNC Microsemi Linfinity Microelectronics Division LXM1621- CCFL I M IMMING UAL AMP NVERTER ODULE RODUCTION ATA HEET LMX1621-xx Min Typ Max -6 -8 -10 2.5 2 -50 2.2 V -0.3 0.8 ...

Page 4

... CN1 48mm 1.89 in 1.52mm 0.60 in PCB tolerances ±0.5mm 124mm 4.88 in CN1 48mm 1.89 in 1.52mm 0.60 in PCB tolerances ±0.5mm All dimensions are in inches (mm) Microsemi Linfinity Microelectronics Division LXM1621- CCFL I M IMMING UAL AMP NVERTER ODULE RODUCTION ATA HEET CN2, CN3 Backside Connectors ∅ ...

Page 5

... Copyright © 2000 Rev. 1.0a, 2005-02-07 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 RangeMAX™ IGITAL CN5 CN4 CN3 CN2 Figure 1 – Connectivity Configuration Examples Microsemi Linfinity Microelectronics Division LXM1621- CCFL I M IMMING UAL AMP NVERTER ODULE RODUCTION ATA ...

Page 6

... The LXM1621-04 uses the reverse pinout found in some panels. The lamp hot wires (high voltage wires) are on pins 2 and 3 and the cold (low voltage wire pin 1. ...

Page 7

... RangeMAX inverter modules are designed to operate with the burst frequency synchronized to the video frame rate. This provides operation with no visible display disturbances caused by beat frequencies between the V LO lamps and video frame rates. Microsemi Linfinity Microelectronics Division LXM1621- CCFL I M IMMING UAL AMP NVERTER ...

Page 8

... Do not rely on a chassis ground connection BRITE LXM1621-xx Also available in single lamp inverters are the LXM1612-xx-xx or LXM1615-xx-xx, as well as the 12V dual lamp LXM1621-12-xx, LXM1622-xx-xx, and the Quad output LXM1641-01 versions for multiple lamp applications. Microsemi Linfinity Microelectronics Division LXM1621-xx ...

Page 9

... Applying more then –300mV to any inverter input will cause inverter malfunction (see Absolute Maximum Ratings). R63 R60 R62 R61 U9 T1 R48 Figure 10 – Locating The Resistor on the LXM1621-xx Copyright © 2000 Rev. 1.0a, 2005-02-07 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 RangeMAX™ IGITAL ...

Page 10

... LinFinity reserves the right to change or discontinue this proposed product at any time. Copyright © 2000 Rev. 1.0a, 2005-02-07 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 RangeMAX™ IGITAL Microsemi Linfinity Microelectronics Division LXM1621- CCFL I M IMMING UAL AMP NVERTER ODULE P D ...

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