LXMG1627-05-44 [MICROSEMI]
5V Dual 4W CCFL Programmable Inverter Module; 5V双路4W CCFL可编程逆变器模块
| 型号： | LXMG1627-05-44 |
| 厂家： | 
Microsemi |
| 描述： | 5V Dual 4W CCFL Programmable Inverter Module |
| 文件： | 总6页 (文件大小：180K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PanelMatch™ RangeMAX™ LXMG1627-05-44
5V Dual 4W CCFL Programmable Inverter Module
®
TM
PRODUCTION DATASHEET
DESCRIPTION
KEY FEATURES
The LXMG1627-05-44 is a Dual 4W This allows the inverter to match the
Output Direct Drive™ CCFL (Cold panel’s lamp current specifications.
Externally Programmable Maximum
Output Current
Easy to Use Brightness Control
RangeMAX Wide Range Dimming
Output Open & Short-Circuit Protection
and Automatic Strike-Voltage
Regulation and Timeout
Fixed Frequency Operation
Rated From -30°C to 80°C
UL60950 E175910 Pending
RoHS Compliant
Cathode Fluorescent Lamp) Inverter
The modules convert a DC voltage
Module specifically designed to be from the system battery or AC adapter
compatible with the Sharp LQ104S1DG51 directly to high frequency, high-voltage
/61 10.4”, LQ121S1DG41/61 12.1” as well waves required to ignite and operate CCFL
as the 10.4” Toshiba Matsushita lamps. A 12V input inverter version is also
LTA104D182F/183F and the Samsung available: LXMG1627-12-44.
LTM121SI-T01 12.1” or similar dual lamp
displays that have individual lamp output Microsemi’s LX6512 backlight controller,
connectors on one side of the panel. which provides a number of cost and
The
module’s
design
utilizes
APPLICATIONS
LXMG1627 modules provide the performance advantages due to the
designer with a vastly superior display controller’s high level of integration.
LCD’s Requiring Both Output
Connectors on One Side of Panel
Sharp LQ104S1DG51/61 and
LQ121S1DG41/61
Samsung LTM121SI-T01
Toshiba Matsushita
LTA104D182F/183F
Desktop Displays
Industrial Display Controls
brightness range. The RangeMAX™
Digital Dimming Technique supplies stable
flicker-free brightness control for any wide secondary-side strike-voltage regulation
Other benefits of this new topology are
fixed-frequency operation,
range
application.
(typically
50:1+)
dimming and both open/shorted lamp protection with
fault timeout for open lamp condition.
The included dimming input permits
brightness control from either, a DC are designed therefore as
voltage source, a PWM signal or an temperature range near
external potentiometer.
The new LXMG1627-xx-44 modules
a
wider
BENEFITS
drop-in-
Smooth, Flicker Free 2%-100%
Full-Range Brightness Control
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
replacement for the LXMG1623-xx-44
The maximum output current is inverters, the major difference being the
externally programmable (through the input input voltage adjustment range of the
connector) over a range of 5mA to 6.5mA BRITE (dimming) pin.
in 0.5mA steps.
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
PRODUCT HIGHLIGHT
UNIVERSAL DIMMING INPUT
"PWM", VDC, OR POTENTIOMETER
500k
PWM
Signal
DC Voltage
Source
Potentiometer
1
2
1
3
2
3
SELECTABLE MAXIMUM OUTPUT CURRENT
5.0MARMS TO 6.5MARMS
PACKAGE ORDER INFO
INVERTER MATES DIRECTLY TO
PANEL CONNECTORS
JST BHR-03VS-1
PART NUMBER
OUTPUT CONNECTOR
LXMG1627-05-44
JST SM02(8.0)B-BHS-1-TB (LF)(SN) or Yeon Ho 20015WR-05A00 or equivalent
Copyright © 2008
Rev. 1.0, 2008-12-04
Microsemi
Page 1
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, 800-877-6458, Fax: 714-893-2570
PanelMatch™ RangeMAX™ LXMG1627-05-44
5V Dual 4W CCFL Programmable Inverter Module
®
TM
PRODUCTION DATASHEET
ABSOLUTE MAXIMUM RATINGS
Input Signal Voltage (VIN) ........................................................................................................................................-0.3V to 6V
Input Power .......................................................................................................................................................................10W
Output Voltage, no load.............................................................................................................Internally Limited to 1800VRMS
Output Current..............................................................................................................................................................9mARMS
Output Power (each output) .............................................................................................................................................4.0W
Input Signal Voltage (
Input) ....................................................................................................................... -0.3V to VIN
SLEEP
Input Signal Voltage (BRITE) ...............................................................................................................................-0.3V to 5.5V
Ambient Operating Temperature, zero airflow.................................................................................................... -30°C to 80°C
Operating Relative Humidity, non-condensing ................................................................................................................ ≤90%
Storage Temperature Range.............................................................................................................................. -40°C to 85°C
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of specified
terminal.
RECOMMENDED OPERATING CONDITIONS (R.C.)
This module has been designed to operate over a wide range of input and output conditions. However, best efficiency and performance will
be obtained if the module is operated under the condition listed in the ‘R.C.’ column. Min. and Max. columns indicate values beyond which
the inverter, although operational, might not function optimally.
Recommended Operating Conditions
Parameter
Symbol
Units
Min
R.C.
Max
Input Supply Voltage Range (Fully Regulated
Lamp Current)
Input Supply Voltage Range (Functional)
Output Power (each output)
Linear BRITE Control Input Voltage Range¹
Lamp Operating Voltage
Lamp Current (Full Brightness) ²
Operating Ambient Temperature Range
4.75
4.5
5
5.25
VIN
V
5
3.5
5.5
4.0
2.5
610
6.5
80
PO
VBRT_ADJ
VLAMP
IOLAMP
TA
W
V
VRMS
mARMS
°C
0
450
5.0
-30
530
¹ The BRITE minimum input voltage level is 0V to 2.5V, whereas it is 0.5V to 2.0V in the LXMG1623-05-44 inverter.
²At input voltages below 5V the inverter may not be able to output the full 6.5mARMS per lamp in all configurations.
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, the following specifications apply over the recommended operating condition and ambient temperature of 0°C to
60°C, BRITE ≥ 2.5V, > 2.0V, VIN = 5V except where otherwise noted.
SLEEP
Parameter
LXMG1627-05-44
Symbol
Test Conditions
Units
Min
Typ
Max
OUTPUT PIN CHARACTERISTICS
Full Bright Lamp Current (each output)
Full Bright Lamp Current (each output)
Full Bright Lamp Current (each output)
Full Bright Lamp Current (each output)
Output Current Lamp to Lamp Deviation
IL(MAX)
IL(MAX)
IL(MAX)
IL(MAX)
ILL%DEV
SET1 = Ground, SET2 = Ground
SET1 = Ground, SET2 = Open
SET1 = Open, SET2 = Ground
SET1 = Open, SET2 = Open
4.5
5.0
5.5
6.0
5.0
5.5
6.0
6.5
3
5.5
6.0
6.5
7.0
10
mARMS
mARMS
mARMS
mARMS
%
SET1 = Open, SET2 = Open
BRITE = 0V, SET1 = SET2 = Ground,
Min. Average Lamp Current
(each output)
IL(MIN)
0.7
1.2
1.7
mARMS
I
L(MIN) = ILMAX *
Burst Duty Cycle
Lamp Start Voltage
Operating Frequency
Burst Frequency
VLS
fO
-30°C < TA < 80°C, VIN > 4.75V
1400
54
1600
60
VRMS
kHz
Hz
66
fBURST
Output Burst Frequency
198
233
268
Copyright © 2008
Rev. 1.0, 2008-12-04
Microsemi
Page 2
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, 800-877-6458, Fax: 714-893-2570
PanelMatch™ RangeMAX™ LXMG1627-05-44
5V Dual 4W CCFL Programmable Inverter Module
®
TM
PRODUCTION DATASHEET
ELECTRICAL CHARACTERISTICS (CONTINUED)
Unless otherwise specified, the following specifications apply over the recommended operating condition and ambient temperature of 0°C
to 60°C, BRITE ≥ 2.5V, > 2.0V, VIN = 5V except where otherwise noted.
SLEEP
Parameter
LXMG1627-05-44
Symbol
Test Conditions
Units
Min
Typ
-18
-7
Max
BRITE = 0V
BRITE = 2.5V
µA
µA
Input Current
IBRT
Minimum Input for Max. Lamp Current
Maximum Input for Min. Lamp Current
Minimum PWM Input Frequency
SLEEP BAR INPUT
RUN Mode
VBRT_ADJ IO(LAMP) = Maximum Lamp Current
VBRT_ADJ IO(LAMP) = Minimum Lamp Current
2.1
0
2.3
2.5
V
V
FBRT_PWM
%BRT_PWM < 50% (Visual Artifact Avoidance)
kHz
8
VSLEEP
VSLEEP
2.0
0
VIN
0.8
V
V
SLEEP Mode
SET1,2 INPUT
SET1,2 Low Threshold
Input Current
VL
0
V
ISET
SETx = 0V
-420
µA
POWER CHARACTERISTICS
Sleep Current
IIN(MIN)
IIN(RUN)
TS_DWELL
IFAULT
η
≤ 0.8V
5
1460
1.3
7
20
2
µA
mA
Sec
mA
%
SLEEP
Run Current
SET1 = Open, SET2 = Ground, VLAMP = 530VRMS
Strike (Open Lamps)
Supply Current After Fault Timeout
Efficiency
1.0
Fault Timeout
SET1 = Open, SET2 = Ground, VLAMP = 530VRMS
80
FUNCTIONAL PIN DESCRIPTION
CONN
PIN
DESCRIPTION
CN1 (Molex 53261-0871 or equivalent) Mates with 51021-0800 housing, 50079-8100 pins. Mates with LX9501G input cable
assembly
CN1-1
VIN
Main Input Power Supply (4.75V ≤ VIN ≤ 5.25V)
CN1-2
CN1-3
CN1-4
GND
Power Supply Return
ON/OFF Control. (0V ≤
≤ 0.8 = OFF,
≥ 2.0V = ON)
SLEEP
SLEEP
CN1-5
SLEEP
BRITE
SET1
CN1-6
CN1-7
CN1-8
Brightness Control (0V to 2.5V). 2.5V insures maximum lamp current.
SET1 MSB Connecting this pin to ground decreases the output current (see Table 1)
SET2 LSB Connecting this pin to ground decreases the output current (see Table 1)
SET2
CN2, CN3 for LXMG1627-05-44 (JST SM02(8.0)B-BHS-1-TB (LF)(SN) or Yeon Ho 20015WR-05A00 or equivalent)
CN2-1
CN3-1
High voltage connection to high side of lamp. Connect to lamp terminal with shortest lead length. DO
NOT connect to Ground.
VHI
CN2-2
CN3-2
Connection to low side of lamp. Connect to lamp terminal with longer lead length.
DO NOT connect to Ground
VLO
Copyright © 2008
Rev. 1.0, 2008-12-04
Microsemi
Page 3
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, 800-877-6458, Fax: 714-893-2570
PanelMatch™ RangeMAX™ LXMG1627-05-44
5V Dual 4W CCFL Programmable Inverter Module
®
TM
PRODUCTION DATASHEET
TABLE 1
OUTPUT CURRENT SETTINGS
SET1
(Pin 7)
Open*
Open*
Ground
Ground
SET2
(Pin 8)
Open*
Ground
Open*
Nominal Output Current
6.5mA
6.0mA
5.5mA
5.0mA
Ground
* If driven by a logic signal it should be open collector or open drain only, not a voltage source.
PHYSICAL DIMENSIONS
L XMG1627 -05-4 4
108.7mm
4.28in.
85.75mm ±0.2mm
3.375in.
10.5mm
0.413in.
Warning
High Voltage is present
at high side of
CN1
1
19.45mm
0.765in.
CN3
CN2
12.7mm
transformer, its core and
the high side of the
output connectors,
please provide at least 2
mm clearance (in all
directions) on the
component side of the
board to any conductor
when mounting
22.35mm
0.88in.
±0.2mm
0.500in.
8
6.75mm
0.266in.
3.05MM X 2 DIA. ±0.08
6MM SCREW HEAD CLEARANCE
Outside dimension PCB tolerances ± 0.5mm
GROUNDED MOUNTING HOLE
PLASTIC SCREW REQUIRED
1.0mm ±0.1
0.0394in.
10.2 mm
0.402in Max
Weight: (18g) typ.
Dimensions are in millimeters (inches are for reference only)
SIMPLIFIED BLOCK DIAGRAM
+4.2V
191k
High Voltage
Transformer
Controller
VHI
VHI
Comparator
VBRITE
+
-
VIN
43.2k
Transformer
Driver
0 – 2.5V
Ramp
VHI
Ramp
Gen
+4.2V
10k
OVSENSE
Z
SET1
SET2
ISENSE
+4.2V
10k
Z
VLO
VLO
Copyright © 2008
Rev. 1.0, 2008-12-04
Microsemi
Page 4
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, 800-877-6458, Fax: 714-893-2570
PanelMatch™ RangeMAX™ LXMG1627-05-44
5V Dual 4W CCFL Programmable Inverter Module
®
TM
PRODUCTION DATASHEET
TYPICAL APPLICATION
5V
VIN
The brightness control may be a voltage output DAC or other
DAC or
Pot
voltage source, a digital pot or 500k manual pot. The inverter
contains an internal 191k pull-up resistor in series with 43.2k
to 4.2V to bias the pot (see block diagram). A PWM logic
level signal (figure 1A) may be used up to 5V; however the
inverter will reach maximum current at less than 100% duty
cycle. This can be calculated as approximately 2.3V divided
by the logic high voltage level; with 3.3V logic level this
corresponds to about 70% duty cycle for maximum lamp
current
BRITE
LAMPHI
LXMG1627-05-44
0V to
2.5V
500k
CCFL
TUBE
LAMPLO
SLEEP
SET1
One of
Two
SET2
NC
GND
If you need to turn the inverter ON/OFF remotely, connect to
TTL logic signal to the
input.
NC
SLEEP
Connect VHI to high voltage wire from the lamp. Connect
VLO to the low voltage wire (wire with thinner insulation).
Never connect VLO to circuit ground as this will defeat lamp
current regulation. If both lamp wires have heavy high
voltage insulation, connect the longest wire to VLO. This wire
is typically white.
Figure 1 – Brightness Control
(Output current set to maximum)
PWM Signal
from System
Use the SET1 and SET2 (see Figure 2) inputs to select the
desired maximum output current. Using these two pins in
combination allows the inverter to match a wide variety of
panels from different manufacturers. Generally the best lamp
lifetime correlates with driving the CCFL at the
manufacturer’s nominal current setting. However the SET1
and SET2 inputs allow the user the flexibility to adjust the
current to the maximum allowable output current to increase
panel brightness at the expense of some reduced lamp life.
BRITE
P.W.
LXMG1627-05-44
2.5µs to 125µS
0 < P.W. < 100% of period
Figure 1A – PWM Brightness Control
Although the SET pins are designed such that just leaving
them open or grounding them is all that is needed to set the
output current, they can also be actively set. Using an open
collector or open drain logic signal will allow you to reduce
the lamp current for situations where greater dim range is
required, as an example in nighttime situations. Since the dim
ratio is a factor of both the burst duty cycle and the peak
output current, using this technique the effective dim ratio can
be increased greater than the burst duty cycle alone.
Conversely, the SET inputs could be used to overdrive the
lamp temporarily to facilitate faster lamp warm up at initial
lamp turn on. Of course, any possible degradation on lamp
life from such practices is the user’s responsibility since not
all lamps are designed to be overdriven.
5V
VIN
BRITE
VHI
CCFL
TUBE
LXMG1627-05-44
SLEEP
SET1
VLO
SET2
GND
ONE OF
TWO
The inverter has a built in fault timeout function. If the output
is open (lamp disconnected or broken) the inverter will
attempt to strike the lamp for about 1.3 seconds, without
success the inverter will shutdown. In order to restart the
inverter it is necessary to toggle the sleep input or cycle the
VIN input supply. If either high side lamp output is directly
connected to ground the inverter will immediately shutdown.
L
L
H
H
L
H
L
5.0mARMS
5.5mARMS
6.0mARMS
6.5mARMS
H
L=GND; H=Open
Figure 2 – Max Output Current
(SET1 and SET2 Inputs)
Copyright © 2008
Rev. 1.0, 2008-12-04
Microsemi
Page 5
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, 800-877-6458, Fax: 714-893-2570
PanelMatch™ RangeMAX™ LXMG1627-05-44
5V Dual 4W CCFL Programmable Inverter Module
®
TM
PRODUCTION DATASHEET
NOTES
PRODUCTION DATA – Information contained in this document is proprietary to
Microsemi and is current as of publication date. This document may not be modified in
any way without the express written consent of Microsemi. Product processing does not
necessarily include testing of all parameters. Microsemi reserves the right to change the
configuration and performance of the product and to discontinue product at any time.
Copyright © 2008
Rev. 1.0, 2008-12-04
Microsemi
Analog Mixed Signal Group
Page 6
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, 800-877-6458, Fax: 714-893-2570
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