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| PanelMatchTM TM (R) LXM1626-12-64 PRODUCTION DATASHEET 12V Dual 6W CCFL Programmable Inverter Module DESCRIPTION KEY FEATURES WWW .Microsemi .C OM The LXM1626-12-64 is a Dual 6W Output Direct DriveTM CCFL (Cold Cathode Fluorescent Lamp) Inverter Module specifically designed to be compatible with the Sharp LQ150X1LGN2(A),(H), 15" or similar dual lamp displays that have both individual lamp output connectors on the one side of the panel. LXM1626 modules provide the designer with a vastly superior display brightness range. This brightness range is achievable with virtually any LCD display. The modules are available with a dimming input that permits brightness control from either, a DC voltage source, a PWM signal or external Potentiometer. The maximum output current is externally programmable (through the input connector) over a range of 3.5 to 5mA in 0.5mA steps. This allows the inverter to match the panel's lamp current specifications, or it can be used to purposely drive the lamps at a lower or higher current to decrease or increase nominal brightness. NO T R OB EC SO OM L ME ET ND E P ED RO FO R DU NE C WT DE SIG NS RangeMAX Digital Dimming Technique provides flicker-free brightness control in any wide range typically (100:1+) dimming application. The resultant "burst drive" that energizes the lamp is designed specifically to ensure that no premature lamp degradation occurs, while allowing significant power savings at lower dim levels. The modules convert DC voltage from the system battery or AC adapter directly to high frequency, high-voltage waves required to ignite and operate CCFL lamps. The modules design utilizes Microsemi's LX1691 Enhanced Multmode CCFL backlight controller, which provides a number of cost and performance advantages due to the controller's high level of integration. Other benefits of this new topology are stable fixed-frequency operation, secondary-side strike-voltage regulation and both open/shorted lamp protection with fault timeout. PRODUCT HIGHLIGHT Externally Programmable Maximum Output Current Easy to Use Brightness Control RangeMAX Wide Range Dimming Output Open & Short-Circuit Protection and Automatic StrikeVoltage Regulation and Timeout Fixed Frequency Operation Rated From -20 to 70C APPLICATIONS LCD's requiring both output connectors on one side of panel Sharp LQ150X1LGN2(A)(H) Desktop Displays Industrial Display Controls BENEFITS Smooth, Flicker Free 1%-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 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 UNIVERSAL DIMMING INPUT "PWM", VDC, OR POTENTIOMETER DC Voltage Source Potentiometer PWM Signal LXM1626-12-64 LXM1626-12-64 SELECTABLE MAXIMUM OUTPUT CURRENT 3.5MA TO 5MA RMS PACKAGE ORDER INFO PART NUMBER LXM1626-12-64 Copyright (c) 2003 Rev. 1.1a, 2005-01-17 OUTPUT CONNECTOR JST SM02B-BHSS-1-TB or Yeon Ho 35001WR-02A00 INVERTER MATES DIRECTLY TO PANEL CONNECTORS JST BHSR-02VS-1 Page 1 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 PanelMatchTM TM (R) LXM1626-12-64 PRODUCTION DATASHEET 12V Dual 6W CCFL Programmable Inverter Module ABSOLUTE MAXIMUM RATINGS (NOTE 1) Input Signal Voltage (VIN1).....................................................................................................................................-0.3V to 16V Input Power ....................................................................................................................................................................... 14W Output Voltage, no load ............................................................................................................ Internally Limited to 1800VRMS Output Current ............................................................................................................................7.5mARMS (Internally Limited) Output Power (each output) ............................................................................................................................................. 6.0W Input Signal Voltage ( SLEEP Input) ..................................................................................................................... -0.3V to VIN1 Input Signal Voltage (BRITE) ...............................................................................................................................-0.3V to 5.5V Ambient Operating Temperature, zero airflow.....................................................................................................-20C to 70C Operating Relative Humidity, non-condensing ................................................................................................................ 90% Storage Temperature Range...............................................................................................................................-40C to 85C Note 1: 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. WWW .Microsemi .C OM 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, will not function optimally. Parameter Symbol VIN1 Recommended Operating Conditions Min R.C. Max 10.8 12 13.2 Units V W V VRMS mARMS C Input Supply Voltage Range (Fully Regulated Lamp Current) Input Supply Voltage Range (Functional) Output Power (each output) Linear BRITE Control Input Voltage Range Lamp Operating Voltage Lamp Current (Full Brightness) Operating Ambient Temperature Range * Total output power must not exceed 6W. Higher voltage lamps may require maximum output current to be set lower than 5mARMS ELECTRICAL CHARACTERISTICS Unless otherwise specified, the following specifications apply over the recommended operating condition and ambient temperature of 25C except where otherwise noted. Parameter Symbol Test Conditions LXM1626-12-64 Min Typ Max 3.0 3.5 3.5 4.0 4.5 5.0 3 0.08 1450 62 121 1650 65 127 68 133 4.0 4.5 5.0 5.5 NO T R OB EC SO OM L ME ET ND E P ED RO FO R DU NE C WT DE SIG NS 10.2 0.1 PO VBRT_ADJ VLAMP IOLAMP TA 12 4.4 1100 3.5 -20 14.4 5.5 2.0 1250* 5.0 70 Units 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 Min. Average Lamp Current (each output) Lamp Start Voltage Operating Frequency Burst Frequency Copyright (c) 2003 Rev. 1.1a, 2005-01-17 IL(MAX) IL(MAX) IL(MAX) IL(MAX) ILL%DEV IL(MIN) VLS fO fBURST VBRT_ADJ > 2.0VDC, SLEEP > 2.0V, VIN1 = 12VDC ISET1 = Ground, ISET2 = Ground VBRT_ADJ > 2.0VDC, SLEEP > 2.0V, VIN1 = 12VDC ISET1 = Ground, ISET2 = Open VBRT_ADJ > 2.0VDC, SLEEP > 2.0V, VIN1 = 12VDC ISET1 = Open, ISET2 = Ground VBRT_ADJ > 2.0VDC, SLEEP > 2.0V, VIN1 = 12VDC ISET1 = Open, ISET2 = Open VBRT_ADJ > 2.0VDC, SLEEP > 2.0V, VIN1 = 12VDC ISET1 = Open, ISET2 = Open VBRT_ADJ = 0VDC, SLEEP > 2.0V, VIN1 = 12VDC ISET1 = ISET2 = Ground -20C < TA < 70C, VIN1 > 10.8VDC VBRT_ADJ = 2.5VDC, SLEEP > 2.0V, VIN1 = 12V Output Burst Frequency mARMS mARMS ELECTRICALS ELECTRICALS 4.0 4.5 mARMS mARMS % mARMS VRMS kHz Hz Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 2 PanelMatchTM TM (R) LXM1626-12-64 PRODUCTION DATASHEET 12V Dual 6W CCFL Programmable Inverter Module Parameter BRITE INPUT Input Current NO T R OB EC SO OM L ME ET ND E P ED RO FO R DU NE C WT DE SIG NS ELECTRICAL CHARACTERISTICS (CONTINUED) Unless otherwise specified, the following specifications apply over the recommended operating condition and ambient temperature of 25C except where otherwise noted. Symbol Test Conditions LXM1626-12-64 Min Typ Max -15 1 2.0 2.05 WWW .Microsemi .C OM Units IBRT VBRT_ADJ = 0VDC VBRT_ADJ = 3VDC ADC ADC VDC VDC Minimum Input for Max. Lamp Current Maximum Input for Min. Lamp Current SLEEP INPUT RUN Mode SLEEP Mode SET1,2 INPUT SET1,2 Low Threshold Input Current VBRT_ADJ VBRT_ADJ IO(LAMP) = Maximum Lamp Current IO(LAMP) = Minimum Lamp Current 0 VSLEEP VSLEEP VL 2.1 VIN1 0.8 VDC VDC -0.3 0.4 -300 V A ISET VSET 0.4V POWER CHARACTERISTICS Sleep Current Run Current Efficiency IIN(MIN) VIN1 = 12VDC, SLEEP < 0.8V 0.0 10 960 78 50 ADC mADC % IIN(RUN) VIN1 = 12VDC, SLEEP 2.0V, ISET1 = Ground ISET2 = Open, VLAMP = 1050VRMS VIN1 = 12VDC, SLEEP 2.0V, ISET1 = Ground ISET2 = Open, VLAMP = 1050VRMS FUNCTIONAL PIN DESCRIPTION DESCRIPTION CONN CN1-1 CN1-2 CN1-3 CN1-4 CN1-5 CN1-6 CN1-7 CN1-8 CN2-1 CN3-1 CN2-2 CN3-2 PIN CN1 (Molex 53261-0890) Mates with 51021-0800 housing, 50079-8100 pins. Mates with LX9501 input cable assembly VIN1 GND Main Input Power Supply (10.8V < VIN1 < 13.2V) Power Supply Return SLEEP BRITE SET1 SET2 ON/OFF Control. (0V < SLEEP < 0.8 = OFF, SLEEP >= 2.1V = ON Brightness Control (0V to 2.0VDC). 2.0VDC gives 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) ELECTRICALS ELECTRICALS CN2, CN3 for LXM1626-12-64 (JST SM02B-BHSS-1-TB or Yeon Ho 35001WR-02A00 ) VHI VLO High voltage connection to high Side of lamp. Connect to lamp terminal with shortest lead length. DO NOT connect to Ground. Connection to low side of lamp. Connect to lamp terminal with longer lead length. DO NOT connect to Ground Copyright (c) 2003 Rev. 1.1a, 2005-01-17 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 3 PanelMatchTM TM (R) LXM1626-12-64 PRODUCTION DATASHEET 12V Dual 6W CCFL Programmable Inverter Module TABLE 1 WWW .Microsemi .C OM SET1 (Pin 7) Open* Open* Ground Ground * If driven by a logic signal it should be open collector or open drain only, not a voltage source. 14mm 0.559in. 3.0mm 0.118in. NO T R OB EC SO OM L ME ET ND E P ED RO FO R DU NE C WT DE SIG NS OUTPUT CURRENT SETTINGS SET2 (Pin 8) Open* Ground Open* Ground 5.0mA 4.5mA 4.0mA 3.5mA PHYSICAL DIMENSIONS LXM1626-12-64 165mm 6.50in. Nominal Output Current GROUNDED MOUNTING HOLE 3MM .08 DIA. 5MM HEAD CLEARANCE BOTH HOLES 15mm 0.591in 21mm 0.827in. 18mm 0.709in. 14mm 0.551in. 137mm 5.394in. 1.0mm 0.0394in. 7.5mm 0.295in. Max Typical weight: 18g PCB tolerances 0.5mm , 4-40 recommended mounting screws SIMPLIFIED BLOCK DIAGRAM All Dimensions are in millimeters, inches for reference only. +3V Controller VBRITE 02VDC 215K Comparator High Voltage Transformer VHI + - 9.09K Ramp Transformer Driver VIN1 LAMP PACKAGE DATA PACKAGE DATA +3V Ramp Gen OCSENSE 10K SET1 +3V OVSENSE SET2 10K ISENSE One of two VLO Copyright (c) 2003 Rev. 1.1a, 2005-01-17 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 4 PanelMatchTM TM (R) LXM1626-12-64 PRODUCTION DATASHEET 12V Dual 6W CCFL Programmable Inverter Module TYPICAL APPLICATION WWW .Microsemi .C OM DAC or Pot BRITE 500K SLEEP SET1 SET2 NC NC Figure 1 - Brightness Control (Output current set to maximum) PWM Signal from System P.W. 10s to 20S 0 < P.W. < 100% of period Figure 1A - PWM Brightness Control BRITE LXM1626-12-64 SLEEP SET1 NO T R OB EC SO OM L ME ET ND E P ED RO FO R DU NE C WT DE SIG NS 12V VIN1 VHI LXM1626-12-64 CCFL TUBE GND VLO ONE OF TWO The brightness control may be a voltage output DAC or other voltage source, a digital pot or 500K manual pot. The inverter contains an internal 215K pull-up to 3V to bias the pot. A 3.3V Logic Level PWM signal from a microcontroller may also be used as shown in Figure 1A. If you need to turn the inverter ON/OFF remotely, connect to TTL logic signal to the SLEEP input. 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. 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 manufactures. Generally the best lamp lifetime correlates with driving the CCFL at the manufactures 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. 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 a 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. In conjunction with a light sensor or other timer the panel could be set to higher brightness (maximum output current) for daytime illumination and lower brightness (minimum or typical output current) at nighttime. 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. The inverter has a built in fault timeout function. If the output is open (lamp disconnected or broken) or shorted to ground the inverter will attempt to strike the lamp for number of cycles. After about 800 milliseconds without success the inverter will shutdown. In order to restart the inverter it is necessary to toggle the SLEEP input or cycle the VIN1 input supply BRITE LXM1626-12-64 12V VIN1 VHI CCFL TUBE SET2 GND VLO ONE OF TWO A APPLICATION L 3.5mARMS H 4.0mARMS L 4.5mARMS H 5.0mARMS L=GND; H=Open Figure 2 - Max Output Current (SET1 and SET2 Inputs) L L H H Copyright (c) 2003 Rev. 1.1a, 2005-01-17 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 5 PanelMatchTM TM (R) LXM1626-12-64 PRODUCTION DATASHEET 12V Dual 6W CCFL Programmable Inverter Module NOTES WWW .Microsemi .C OM NO T R OB EC SO OM L ME ET ND E P ED RO FO R DU NE C WT DE SIG NS NOTES 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 (c) 2003 Rev. 1.1a, 2005-01-17 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 6 |
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