PanelMatch™ VEasyLIT™ LXMG1813-12-6xS 12V 6W CCFL Programmable Inverter Module ® TM P RODUCTION D ATASHEET KEY FEATURES DESCRIPTION Automatic brightness control can extend the life of the display and save power (particularly important for battery powered products). For applications needing full manual control of lamp brightness (dimming) we recommend the LXMG1813-12-6x (non-S), which does not offer the light sensor input. The maximum output current of the inverter is externally programmable over a range of 4mA to 7mA in 1mA steps to allow the inverter to properly match (PanelMatch™) to a wide array of LCD panel lamp current specifications. For lower input voltage requirements the LXMG1811-05-6x or -6xS will work from a 5V input supply. Other benefits of the inverter’s topology include stable fixed-frequency operation, secondary-side strike voltage regulation and both open/shorted lamp protection with fault timeout. 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 Automatic Lamp Dimming Using External LXMG1800_LS Light Sensor Board Assembly Externally Programmable Maximum Output Current Wide Input Voltage Range Fixed Frequency Operation Output Short-Circuit Protection and Automatic Strike-Voltage Regulation and Timeout RangeMAX Wide Range Dimming (50:1+) Rated From -30°C to 80°C UL60950 Pending RoHS Compliant WWW . Microsemi .C OM The LXMG1813-12-6xS is a Single Output 6W CCFL (Cold Cathode Fluorescent Lamp) Inverter Module designed for the driving LCD backlight lamps for panels in the range of 3.9” to 15”. Utilizing the full-bridge drive topology capabilities of the Microsemi’s highly integrated LX1697 CCFL backlight controller the inverter allows a wider input voltage range (9V to 16.8V) and wider lamp output voltage range 390V to 790V compared to Microsemi’s existing Direct Drive™ inverter solutions. Also this ‘S’ version includes an additional input connector which links the inverter to a light sensor board (the LXMG1800_LS). So connected, the inverter is capable of automatically adjusting (VEasyLIT™) the brightness of the LCD display to ambient lighting conditions. APPLICATIONS Medical Instrument Displays Portable Instrumentation Desktop Displays Industrial Display Controls BENEFITS Smooth, Flicker Free Full-Range Brightness Control Programmable Output Current Allows Inverter to Mate with a Wide Variety of LCD Panel’s Specifications PRODUCT HIGHLIGHT LXMG1813-12-6XS 1 2 3 VEASYLIT™ AUTOMATIC BRIGHTNESS INPUT USING LXMG1800_LS AMBIENT LIGHT SENSOR ASSEMBLY W SELECTABLE MAXIMUM OUPUT CURRENT 4MARMS TO 7MARMS PACKAGE ORDER INFO PART NUMBER OUTPUT CONNECTOR INVERTER MATES DIRECTLY TO PANEL CONNECTORS LXMG1813-12-61S LXMG1813-12-62S JST SM02(8.0)B-BHS-1-TB(LF)(SN), Yeon Ho 20015WR-05A00 or equivalent JST SM02B-BHSS-1-TB(LF)(SN), Yeon Ho 35001WR-02A00 or equivalent JST BHR-03VS-1 JST BHSR-02VS-1 Copyright © 2008 Rev 1.0, 2008-11-14 Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: 714-893-2570 Page 1 PanelMatch™ VEasyLIT™ LXMG1813-12-6xS 12V 6W CCFL Programmable Inverter Module ® TM P RODUCTION D ATASHEET ABSOLUTE MAXIMUM RATINGS Input Signal Voltage ( SLEEP Input) ...................................................................................................................... -0.3V to VIN Input Signal Voltage (ALS_IN) .............................................................................................................................-0.3V to 5.5V Analog Output (ALS_VCC external load current) ............................................................................................................. -5mA Ambient Operating Temperature, zero airflow.....................................................................................................-30°C to 80°C 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. WWW . Microsemi .C OM Input Signal Voltage (VIN) ......................................................................................................................................-0.3V to 19V Input Power ......................................................................................................................................................................... 8W Output Voltage, no load ............................................................................................................................................ 1800VRMS Output Current .......................................................................................................................................................... 7.5mARMS Output Power ...................................................................................................................................................................... 6W 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, may not function optimally. Parameter Symbol Input Supply Voltage Range (Fully Regulated Lamp Current) Input Supply Voltage Range (Functional) Output Power Lamp Operating Voltage Lamp Current (Full Brightness) Operating Ambient Temperature Range Recommended Operating Conditions Min R.C. Max 9 12 16.8 8.4 12 4.2 590 16.8 6.0 790 7 80 VIN PO VLAMP IO(LAMP) TA 390 4 -30 Units V W VRMS mARMS °C ELECTRICAL CHARACTERISTICS The following specifications apply over the recommended operating condition and ambient temperature of 0°C to 60°C except where otherwise noted; ALS_IN ≥ 2.3V, SLEEP ≥ 2.0V, VIN = 12V. LXMG1813-12-6xS Parameter Symbol Test Conditions Units Min Typ Max ` OUTPUT PIN CHARACTERISTICS IL(MAX) SET1 = Ground, SET2 = Ground 3.5 4.0 4.5 mARMS Full Lamp Current IL(MAX) SET1 = Ground, SET2 = Open 4.5 5.0 5.5 mARMS Full Lamp Current IL(MAX) SET1 = Open, SET2 = Ground 5.5 6.0 6.5 mARMS Full Lamp Current IL(MAX) SET1 = Open, SET2 = Open 6.5 7.0 7.5 mARMS Full Lamp Current IL(MAX) VIN = 9 to 16.8V; SET1 = Open, SET2 = Ground 5.4 6.0 6.6 mARMS Min. Average Lamp Current IL(MIN) ALS_IN ≤ 0.9V, SET1 = SET2 = Ground, BRITE = floating; IL(MIN) = IL* √(Min Duty Ratio) Lamp Start Voltage Operating Frequency Burst Frequency Copyright © 2008 Rev 1.0, 2008-11-14 VLS -30°C < TA < 80°C, VIN ≥ 8.4V fO fBURST Output Burst Frequency 1.0 mARMS 1400 1600 49.8 53 56.2 kHz 195 208 220 Hz Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: 714-893-2570 VRMS Page 2 ELECTRICALS Full Lamp Current PanelMatch™ VEasyLIT™ LXMG1813-12-6xS 12V 6W CCFL Programmable Inverter Module ® TM P RODUCTION D ATASHEET otherwise noted; ALS_IN ≥ 2.3V, SLEEP ≥ 2.0V, VIN = 12V. Parameter ` Symbol BRTPOT Potentiometer Min Impedance ` LXMG1813-12-6xS Min Typ Max Units BRITE INPUT Potentiometer Max Impedance ` Test Conditions Full Lamp Current 400 500 kΩ 0 kΩ Minimum Lamp Current SLEEP BAR INPUT RUN Mode VSLEEP 2.0 VIN V SLEEP Mode VSLEEP -0.3 0.8 V WWW . Microsemi .C OM ELECTRICAL CHARACTERISTICS (CONTINUED) The following specifications apply over the recommended operating condition and ambient temperature of 0°C to 60°C except where SET1,2 INPUT SET1,2 Low Threshold VL Input Current ISET ` ALS (AMBIENT LIGHT SENSOR) ` POWER CHARACTERISTICS ALS_VCC ALSVCC Sleep Current IIN(MIN) Run Current IRUN Strike (Open Lamp) 0 VSETx = 0V -510 -555 µA 4.8 5.1 5.5 V SLEEP ≤ 0.8V 10 20 SET1 = Open SET2 = Ground, VLAMP = 590VRMS 370 ILOAD = 3mA TS_DWELL Supply Current under Fault condition IFAULT η Typical Efficiency V -475 1.5 Fault condition SET1 = Open SET2 = Ground, VLAMP = 590VRMS 75 2 µA mA 2.5 Sec 8 mA 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 (9V ≤ VIN ≤ 16.8V) CN1-2 CN1-3 GND Power Supply Return CN1-4 CN1-5 SLEEP ON/OFF Control. (0V ≤ SLEEP ≤ 0.8V = OFF, SLEEP ≥ 2.0V = ON CN1-6 BRITE CN1-7 SET1 SET1 MSB Connecting this pin to ground decreases the output current (see Table 1) CN1-8 SET2 SET2 LSB Connecting this pin to ground decreases the output current (see Table 1) CN2 (Molex 53261-0371 or equivalent) mates with 51021-0800 housing, 50079-8100 pins. Mates with LXMG1800_LS ALS Assembly CN2-1 ALS_VCC CN2-2 ALS_IN CN2-3 ASL_GND Copyright © 2008 Rev 1.0, 2008-11-14 Nominal 5.1V Supply for ALS Board Assembly. 3mA maximum output load Brightness Control Voltage input from light sensor board. ALS Board Power Supply Return. Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: 714-893-2570 Page 3 ELECTRICALS Can be left open or connected to a 500k potentiometer to reduce brightness when the LXMG1800_LS is connected to CN3. Not recommended as brightness control voltage input. PanelMatch™ VEasyLIT™ LXMG1813-12-6xS 12V 6W CCFL Programmable Inverter Module ® TM P RODUCTION D ATASHEET FUNCTIONAL PIN DESCRIPTION PIN DESCRIPTION CN3 for LXMG1813-12-61S and -62S (JST SM02(8.0)B-BHS-1-TB(LF)(SN) ; Yeon Ho 20015WR-05A00, SM02B-BHSS-1-TB(LF)(SN) ; Yeon Ho 35001WR-02A00) or equivalent CN3-1 VHI High voltage connection to high side of lamp. Connect to lamp terminal with shortest lead length. DO NOT connect to Ground. CN3-2 VLO Connection to low side of lamp. Connect to lamp terminal with longer lead length. DO NOT connect to Ground TABLE 1 OUTPUT CURRENT SETTINGS SET1 (Pin 7) Open* Open* Ground Ground SET2 (Pin 8) Open* Ground Open* Ground WWW . Microsemi .C OM CONN Nominal Output Current 7.0mA 6.0mA 5.0mA 4.0mA * If driven by a logic signal it should be open collector or open drain only, not a voltage source. PHYSICAL DIMENSIONS LXMG1813-12-6xS 110mm 93.5mm 4.33in. MOUNTING HOLE 3.18MM ±.08 DIA. 3.68in. CN1 X CN2 16mm 0.63in. 3.5mm 12.5mm 9mm ±0.2 0.492in 0.354in. CN2 CN3 X X 0.138in. 74mm ±0.2mm 19.5mm 0.768in. GROUNDED MOUNTING HOLE 3.18MM ±.08 DIA. 2.91in Warning High Voltage is present at high side of transformer, its core and the high side of the output connector, please provide at least 3 mm clearance (in all directions) on the component side of the board to any conductor when mounting 1.0mm ±0.1 0.0394in. 6.0mm Max 0.236in. R1.0 PCB tolerances ± 0.5mm , M3 recommended mounting screws Weight: (9g) typ. All dimensions are in millimeters, inches are for reference only PACKAGE DATA Copyright © 2008 Rev 1.0, 2008-11-14 Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: 714-893-2570 Page 4 PanelMatch™ VEasyLIT™ LXMG1813-12-6xS 12V 6W CCFL Programmable Inverter Module ® TM P RODUCTION D ATASHEET SIMPLIFIED BLOCK DIAGRAM WWW . Microsemi .C OM VIN ALS_VCC 5.1V ALS_IN 100k 0.1µF 402k LAMP HI BRITE 1M 2.2µF Control Circuitry VIN SLEEP LAMP +5.1V 10k SET1 +5.1V 10k OVSENSE ISENSE SET2 LAMP LO VeasyLIT™ LXMG1800_LS APPLICATION Key LXMG1800_LS Features Light Sensor board should be mounted on the same plane with LCD panel for best results BLOCK DIAGRAM Small Size 9.5 x 31 x 2.5 mm Flush Mount on Sensor Side Board is Powered by Inverter User Customizable Light Gain Human Eye Light Response Flexible Mounting Location LXMG1800_LS Copyright © 2008 Rev 1.0, 2008-11-14 Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: 714-893-2570 Page 5 PanelMatch™ VEasyLIT™ LXMG1813-12-6xS 12V 6W CCFL Programmable Inverter Module ® TM P RODUCTION D ATASHEET TYPICAL APPLICATION 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 manufacturers. Generally the best lamp lifetime correlates with driving the CCFL at the manufacture’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. 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. 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) the inverter will attempt to strike the lamp up to about two seconds, after which (without success) the inverter will shutdown. In this mode the inverter will draw about 8mA from VIN. In order to restart the inverter it is necessary to toggle the sleep input or cycle the VIN input supply. 12V VHI VIN BRITE 500k CCFL TUBE LXMG1813-12-6xS SLEEP SET1 SET2 NC NC GND VLO Figure 1 – Brightness Control (Output current set to maximum) 12V VIN BRITE VHI CCFL TUBE LXMG1813-12-6xS SLEEP SET1 SET2 GND VLO L L H H L 4.0mARMS H 5.0mARMS L 6.0mARMS H 7.0mARMS L=GND; H=Open Figure 2 – Max Output Current (SET1 and SET2 Inputs) Copyright © 2008 Rev 1.0, 2008-11-14 Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: 714-893-2570 Page 6 APPLICATION It is recommended to use LXMG1813-12-6xS only with the LXMG1800_LS external light sensor assembly. A 500k potentiometer may be added to the inverter’s BRITE input pin to allow a degree of manual override to the light sensor. Adjustment of the potentiometer will only dim the display further; it cannot increase the maximum brightness level set by the light sensor. If full manual control of dimming is required by the application we recommend the use of the LXMG1813-12-6x (non-S) version. WWW . Microsemi .C OM PanelMatch™ VEasyLIT™ LXMG1813-12-6xS TM 12V 6W CCFL Programmable Inverter Module ® P RODUCTION D ATASHEET NOTES WWW . Microsemi .C OM 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, 2008-11-14 Microsemi Analog Mixed Signal Group 11861 Western Avenue, Garden Grove, CA. 92841, 800-877-6458, 714-898-8121, Fax: 714-893-2570 Page 7