3.3V 2.2W CCFL Programmable Inverter Module DESCRIPTION FEAT

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3.3V 2.2W CCFL Programmable Inverter Module DESCRIPTION FEAT

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LXM1618-03-2x
3.3V 2.2W CCFL Programmable Inverter Module
DESCRIPTION
FEATURES
Microsemi
LXM1618-03-2x Single Output 2.2W Direct DriveCCFL (Cold Cathode Fluorescent Lamp) Inverter Module specifically designed driving backlight lamps. ideal driving typical 3.9" 6.4" panels. maximum output current externally programmable over range 0.5mA steps allow inverter properly match wide array panel lamp current specifications. modules include dimming input that permits brightness control from either voltage source, signal external potentiometer. LXM1618 modules unlike LXM1617 series does provide wide range `burst' mode dimming, rather dimming provided amplitude control output current waveform, this limits potential range typically less than 5:1.
applications requiring wide range dimming, amplitude control results lower ripple input supply reduced potential transient noise generation. Many type panels particularly well suited current amplitude dimming. modules convert voltage from system battery adapter directly high frequency, high-voltage waves required ignite operate CCFL lamps. input inverter also available (LXM1618-05-2x). modules design based Microsemi's LX1689 backlight controller, which provides number cost performance advantages controller's high level integration. Other benefits this topology stable fixed-frequency operation, secondary-side strike-voltage regulation both open shorted lamp protection with fault timeout.
Externally Programmable Maximum Output Current Easy Brightness Control Output Short-Circuit Protection Automatic Strike-Voltage Regulation Timeout Analog Current Amplitude Dimming Method Fixed Frequency Operation Rated From 70°C APPLICATIONS PDA's Portable Instrumentation Industrial Display Controls BENEFITS Compact, Profile Design Mates wide variety Panels Output Open Circuit Voltage Regulation Minimizes Corona Discharge High Reliability
IMPORTANT: most current data, consult MICROSEMI's website: http://www.microsemi.com
PRODUCT HIGHLIGHT
ETER
Voltage Source
Potentiom eter
Signal
LXM1618-03-2X LXM1618-03-2X
ELECTABLE
UPUT
URRENT
PACKAGE ORDER INFO
PART NUMBER LXM1618-03-21 LXM1618-03-22 LXM1618-03-23
Copyright 2002 Rev. 2003-10-14
OUTPUT CONNECTOR SM02(8.0)B-BHS-1-TB SM02B-BHSS-1-TB Honda QZ-19-A3MYL
INVERTER MATES DIRECTLY PANEL CONNECTORS BHR-03VS-1 BHSR-02VS-1 HONDA QZ-19-3F01
Page
Microsemi
Integrated Products 11861 Western Avenue, Garden Grove, 92841, 714-898-8121, Fax: 714-893-2570
LXM1618-03-2x
3.3V 2.2W CCFL Programmable Inverter Module
ABSOLUTE MAXIMUM RATINGS (NOTE Input Signal Voltage (VIN1).-0.3V Input Power 3.0W Output Voltage, load Internally Limited 130VRMS Output Current .6mARMS (Internally Limited) Output Power 2.3W Input Signal Voltage SLEEP Input) .-0.3V Input Signal Voltage (BRITE) .-0.3V Ambient Operating Temperature, zero airflow.-20°C 70°C Storage Temperature Range.-40°C 85°C
Note Exceeding these ratings could cause damage device. voltages with respect Ground. Currents positive into, negative specified terminal.
Microsemi
RECOMMENDED OPERATING CONDITIONS (R.C.) This module been designed operate over wide range input output conditions. However, best efficiency performance will obtained module operated under condition listed `R.C.' column. Min. Max. columns indicate values beyond which inverter, although operational, will function optimally. Parameter Input Supply Voltage Range (Fully Regulated Lamp Current) Input Supply Voltage Range (Functional) Output Power Linear BRITE Control Input Voltage Lamp Operating Voltage Lamp Current (Full Brightness) Operating Ambient Temperature Range Symbol VIN1 VBRT_ADJ VLAMP IOLAMP Recommended Operating Conditions R.C. 0.65 435* Units VRMS mARMS
minimum VBRT voltage depends panel characteristics, depending panel vary from 0.65V 0.9V
*Total output power must exceed 2.2W Higher voltage lamps require maximum output current lower than 5mARMS voltages below 3.6V inverter able output full 5mARMS configurations.
ELECTRICAL CHARACTERISTICS Unless otherwise specified, following specifications apply over recommended operating condition ambient temperature 25°C except where otherwise noted. Parameter
OUTPUT CHARACTERISTICS Full Bright Lamp Current Full Bright Lamp Current Full Bright Lamp Current Full Bright Lamp Current Min. Average Lamp Current Lamp Start Voltage Operating Frequency IL(MAX) IL(MAX) IL(MAX) IL(MAX) IL(MIN) VBRT_ADJ 2.0VDC, SLEEP 2.0V, VIN1 3.3VDC ISET1 Ground, ISET2 Ground VBRT_ADJ 2.0VDC, SLEEP 2.0V, VIN1 3.3VDC ISET1 Ground, ISET2 Open VBRT_ADJ 2.0VDC, SLEEP 2.0V, VIN1 3.3VDC ISET1 Open, ISET2 Ground VBRT_ADJ 2.0VDC, SLEEP 2.0V, VIN1 3.3VDC ISET1 Open, ISET2 Open VBRT_ADJ =0.65VDC, SLEEP 2.0V, VIN1 3.3VDC ISET1 ISET2 Ground -20°C 70°C, VIN1 3.15VDC VBRT_ADJ 2.5VDC, SLEEP 2.0V, VIN1 3.3V 1.5* 1000 1100 mARMS mARMS mARMS mARMS mARMS VRMS
Symbol
Test Conditions
LXM1618-03-2x
Units
ELECTRICALS
Inverter capable lower output current than recommended panel manufacturer. user's responsibility minimum brightness (BRITE) input above panel specification minimum current.
Copyright 2002 Rev. 2003-10-14
Microsemi
Integrated Products 11861 Western Avenue, Garden Grove, 92841, 714-898-8121, Fax: 714-893-2570
Page
LXM1618-03-2x
3.3V 2.2W CCFL Programmable Inverter Module
ELECTRICAL CHARACTERISTICS (CONTINUED) Unless otherwise specified, following specifications apply over recommended operating condition ambient temperature 25°C except where otherwise noted. Parameter
BRITE INPUT Input Current Minimum Input Max. Lamp Current Minimum Input Min. Lamp Current SLEEP INPUT Mode SLEEP Mode SET1,2 INPUT SET1,2 Threshold Input Current POWER CHARACTERISTICS Sleep Current Current Efficiency IIN(MIN) IRUN VIN1 3.3VDC, SLEEP 0.8V VIN1 3.3VDC, SLEEP 2.0V, ISET1 Open ISET2 Ground, VLAMP 380VRMS VIN1 3.3VDC, SLEEP 2.0V, ISET1 Open ISET2 Ground, VLAMP 380VRMS µADC mADC ISET VSET 0.4V -300 IBRT VBRT_ADJ VBRT_ADJ VBRT_ADJ 0VDC VBRT_ADJ 3VDC IO(LAMP) Maximum Lamp Current IO(LAMP) Minimum Lamp Current 0.65* -300 2.05 µADC µADC
Microsemi
Symbol
Test Conditions
LXM1618-03-2x
Units
VSLEEP VSLEEP
-0.3
VIN1
Inverter capable lower output current than recommended panel manufacturer. user's responsibility minimum brightness (BRITE) input above panel specification minimum current. This likely greater than 0.65V minimum input
FUNCTIONAL DESCRIPTION CONN CN1-1 CN1-2 CN1-3 CN1-4 CN1-5 CN1-6 CN1-7 CN1-8 DESCRIPTION Main Input Power Supply VIN1 3.6V) Power Supply Return ON/OFF Control. SLEEP OFF, SLEEP 2.0V Brightness Control (0.65V 2.0VDC). 2.0VDC gives maximum lamp current. SET1 Connecting this ground decreases output current (see Table SET2 Connecting this ground decreases output current 0.5mA (see Table (Molex 53261-0890) Mates with 51021-0800 housing, 50079-8100 pins. Mates with LX9501 input cable assembly VIN1
SLEEP
BRITE SET1 SET2
ELECTRICALS
LXM1618-03-21 (JST SM02(8.0)B-BHS-1-TB SM02B-BHSS-1-TB) CN2-1 CN2-2 High voltage connection high Side lamp. Connect lamp terminal with shortest lead length. connect Ground. Connection side lamp. Connect lamp terminal with longer lead length. connect Ground High voltage connection high side lamp. Connect lamp terminal with shortest lead length. connect Ground. Connection side lamp. Connect lamp terminal with longer lead length. connect Ground
LXM1618-03-23 (Honda QZ-19-A3MYL #02) CN2-3 CN2-1
Copyright 2002 Rev. 2003-10-14
Microsemi
Integrated Products 11861 Western Avenue, Garden Grove, 92841, 714-898-8121, Fax: 714-893-2570
Page
LXM1618-03-2x
3.3V 2.2W CCFL Programmable Inverter Module
TABLE OUTPUT CURRENT SETTINGS SET1 (Pin Open Open Ground Ground SET2 (Pin Open Ground Open Ground Nominal Output Current 5.0mA 4.5mA 4.0mA 3.5mA
Microsemi
driven logic signal should open collector open drain only, voltage source.
PHYSICAL DIMENSIONS LXM1618-03-2X
86mm 71mm
2.80in 3.39in MOUNTING HOLE
SM02(8.0)B-BHS-1-TB (JST)
2.44MM ±0.08 DIA.
CN-1 3.5mm
0.138in.
16mm
0.63in.
±2mm 0.354
12.5mm 0.492in
CN-2
11mm
0.433in.
GROUNDED MOUNTING HOLE 2.44MM ±0.08 DIA.
60mm ±0.2mm
2.36in.
0.8mm
0.0315in.
4.6mm
0.181in.
Warning
R1.0
tolerances 0.5mm, 2-56 recommended mounting screws
High Voltage Present high side transformer Weight: (5.7g) typ. Output Connector
dimensions millimeters, inches reference only. SIMPLIFIED BLOCK DIAGRAM
High Voltage Transform Controller Transform Driver
BRIT 0.65
LAMP
Honda QZ-19-A3MYL
SM02B-BHSS-1-TB (JST)
PACKAGE DATA PACKAGE DATA
SENSE
SENSE SENSE
Copyright 2002 Rev. 2003-10-14
Microsemi
Integrated Products 11861 Western Avenue, Garden Grove, 92841, 714-898-8121, Fax: 714-893-2570
Page
LXM1618-03-2x
3.3V 2.2W CCFL Programmable Inverter Module
TYPICAL APPLICATION
3.3V 0.65V 2.0V 2.7K LXM1618-03-2x BRITE
Microsemi
CCFL TUBE
brightness control voltage output other voltage source, digital manual pot. inverter contains internal pull-up bias 2.7K resistor lower threshold voltage. 3.3V Logic Level signal from micro-controller also used shown Figure need turn inverter ON/OFF remotely, connect logic signal SLEEP input. Connect high voltage wire from lamp. Connect voltage wire (wire with thinner insulation). Never connect circuit ground this will defeat lamp current regulation. both lamp wires have heavy high voltage insulation, connect longest wire VLO. This wire typically white. SET1 SET2 (see Figure inputs select desired maximum output current. Using these pins combination allows inverter match wide variety panels from different manufactures. Generally best lamp lifetime efficiency correlates with driving CCFL manufactures nominal current setting. However SET1 SET2 inputs allow user flexibility adjust current maximum allowable output current increase panel brightness expense some reduced lamp life. Although pins designed such that just leaving them open grounding them that needed output current, they also actively set. Using open collector open drain logic signal will allow reduce lamp current situations where greater range required, example nighttime situations. conjunction with light sensor other timer panel could higher brightness (maximum output current) daytime illumination lower brightness (minimum typical output current) nighttime. Since ratio factor peak output current, using this technique effective ratio increased. Conversely inputs could used overdrive lamp temporarily facilitate faster lamp warm initial lamp turn course possible degradation lamp life from such practices users responsibility lamps designed overdriven. inverter built fault timeout function. output open (lamp disconnected broken) shorted inverter will attempt strike lamp several seconds. After about seconds without success inverter will shutdown. order restart inverter necessary toggle sleep input cycle VIN1 input supply.
SLEEP
Figure Brightness Control (Output current maximum)
Signal from System
BRITE
LXM1618-03-2x 10µs 125µS ~26% P.W. 100% period
Figure Brightness Control
3.3V BRITE
CCFL TUBE
LXM1618-03-2x SLEEP
APPLICATION APPLICATION
3.5mARMS 4.0mARMS 4.5mARMS 5.0mARMS L=GND; Open Figure Output Current (SET1 SET2 Inputs)
Copyright 2002 Rev. 2003-10-14
Microsemi
Integrated Products 11861 Western Avenue, Garden Grove, 92841, 714-898-8121, Fax: 714-893-2570
Page
LXM1618-03-2x
3.3V 2.2W CCFL Programmable Inverter Module
NOTES
Microsemi
NOTES NOTES
PRODUCTION DATA Information contained this document proprietary Microsemi current publication date. This document modified without express written consent Microsemi. Product processing does necessarily include testing parameters. Microsemi reserves right change configuration performance product discontinue product time.
Copyright 2002 Rev. 2003-10-14
Microsemi
Integrated Products 11861 Western Avenue, Garden Grove, 92841, 714-898-8121, Fax: 714-893-2570
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3.3V 2.2W CCFL Programmable Inverter Module DESCRIPTION FEAT

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