WWW.Microsemi .COM LXM1618-05-6 LXM1618-05-6X X PanelMatch™ LXM1618-05-6x 5V 6W CCFL Programmable Inverter Module I N TE G R A T E D P R O D U C TS PRODUCTION DATASHEET DESCRIPTION KEY FEATURES The LXM1618-05-6x is a Single For applications not requiring wide ƒ Externally Programmable Output 6W Direct Drive™ CCFL (Cold range dimming, amplitude control results Maximum Output Current ƒ Easy to Use Brightness Cathode Fluorescent Lamp) Inverter in lower ripple on the input supply and Control Module specifically designed for driving reduced potential transient noise ƒ Output Short-Circuit LCD backlight lamps. It is ideal for generation. Many STN type panels are Protection and Automatic driving typical 12.1” to 15” panels. particularly well suited for current Strike-Voltage Regulation The maximum output current is amplitude dimming. and Timeout externally programmable over a range of 5 The modules convert a DC voltage ƒ Analog Current Amplitude to 8A in 1mA steps to allow the inverter to from the system battery or AC adapter Dimming Method properly match to a wide array of LCD directly to high frequency, high-voltage ƒ Fixed Frequency Operation panel lamp current specifications. The waves required to ignite and operate ƒ Rated From -20 to 70°C ƒ UL60950 E175910 modules are include a dimming input that CCFL lamps. A 12V input inverter is also permits brightness control from either a available (LXM1618-12-6x). APPLICATIONS DC voltage source, a PWM signal or an The inverter’s design is based on external potentiometer. Microsemi’s new LX1689 backlight ƒ Notebook Computers LXM1618 modules unlike the controller, which provides a number of ƒ Portable Instrumentation ƒ Desktop Displays LXM1617 series does not provide wide cost and performance advantages due to ƒ Industrial Display Controls range ‘burst’ mode dimming, rather the controller’s high level of integration. dimming is provided by amplitude control Other benefits of this new topology BENEFITS of the output current waveform, this limits are stable fixed-frequency operation, the potential dim range to typically less secondary-side strike-voltage regulation ƒ Compact, Low Profile Design ƒ Mates to Wide Variety of than 5:1. and both open and shorted lamp LCD Panels protection with fault timeout. ƒ Output Open Circuit Voltage IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com Regulation Minimizes Protected By U.S. Patents: 5,923,129; 5,930,121; 6,198,234; Patents Pending Corona Discharge For High Reliability PRODUCT HIGHLIGHT U N IVERSAL D IM M IN G INPUT "P W M ", V , OR P O TEN TIO M ETER DC PWM DC Voltage Potentiometer Signal Source W S ELEC TA B LE M AXIM U M O UPUT C URRENT 5 MA TO 8 M A RM S PACKAGE ORDER INFO INVERTER MATES DIRECTLY TO PART NUMBER OUTPUT CONNECTOR PANEL CONNECTORS LXM1618-05-61 JST SM02(8.0)B-BHS-1-TB or Yeon Ho 20015WR-05A00 JST BHR-03VS-1 LXM1618-05-62 JST SM02B-BHSS-1-TB or Yeon Ho 35001WR-02A00 JST BHSR-02VS-1 LXM1618-05-63 Honda QZ-19-A3MYL #02 Honda QZ-19-3F01 Copyright © 2002 Microsemi Page 1 Rev. 1.0b, 2005-01-17 Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 1 2 3 WWW.Microsemi .COM E EL LE EC CT TR RI IC CA AL LS S PanelMatch™ LXM1618-05-6x 5V 6W CCFL Programmable Inverter Module I N TE G R A T E D P R O D U C TS PRODUCTION DATASHEET ABSOLUTE MAXIMUM RATINGS (NOTE 1) Input Signal Voltage (V )....................................................................................................................................-0.3V to 6.5V IN1 Input Power.................................................................................................................................................................... 8.25W Output Voltage, no load ............................................................................................................ Internally Limited to 1800V RMS Output Current .............................................................................................................................10mA (Internally Limited) RMS Output Power ................................................................................................................................................................... 6.0W Input Signal Voltage ( SLEEP Input)....................................................................................................................-0.3V to 5.5V Input Signal Voltage (BRITE) ...............................................................................................................................-0.3V to 5.5V Ambient Operating Temperature, zero airflow.....................................................................................................-20°C to 70°C Storage Temperature Range...............................................................................................................................-40°C to 85°C 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. 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. Recommended Operating Conditions Parameter Symbol Units Min R.C. Max Input Supply Voltage Range (Fully Regulated 4.75 5 5.25 Lamp Current) V V IN1 Input Supply Voltage Range (Functional) 4.5 5 5.5 Output Power P 6.0 W O Linear BRITE Control Input Voltage Range V 0.65 2.0 V BRT_ADJ Lamp Operating Voltage V 545 640 735* V LAMP RMS Lamp Current (Full Brightness) I 5 8 mA OLAMP RMS Operating Ambient Temperature Range T -20 70 °C A ¹ The minimum V voltage depends on the panel characteristics, depending on the panel it can vary from 0.65V to 0.9V BRT ADJ * Total output power must not exceed 6W. Higher voltage lamps may require maximum output current to be set lower than 8mA RMS ELECTRICAL CHARACTERISTICS Unless otherwise specified, the following specifications apply over the recommended operating condition and ambient temperature of 25°C except where otherwise noted. LXM1618-05-6x Parameter Symbol Test Conditions Units Min Typ Max OUTPUT PIN CHARACTERISTICS ` V > 2.0V , > 2.0V, V = 5V BRT_ADJ DC SLEEP IN1 DC Full Bright Lamp Current I 4.4 5 5.6 mA L(MAX) RMS I = Ground, I = Ground SET1 SET2 V > 2.0V , > 2.0V, V = 5V BRT_ADJ DC SLEEP IN1 DC Full Bright Lamp Current I 5.4 6 6.6 mA L(MAX) RMS I = Ground, I = Open SET1 SET2 V > 2.0V , > 2.0V, V = 5V BRT_ADJ DC SLEEP IN1 DC Full Bright Lamp Current I 6.4 7 7.6 mA L(MAX) RMS I = Open, I = Ground SET1 SET2 V > 2.0V , > 2.0V, V = 5V BRT_ADJ DC SLEEP IN1 DC Full Bright Lamp Current I 7.4 8 8.6 mA L(MAX) RMS I = Open, I = Open SET1 SET2 Min. Average Lamp Current V =0.65V , > 2.0V, V = 5V BRT_ADJ DC SLEEP IN1 DC I 1.5 * mA L(MIN) RMS I = I = Ground SET1 SET2 Lamp Start Voltage V -20°C < T < 70°C, V > 4.5V 1400 1650 V LS A IN1 DC RMS Operating Frequency f V = 2.5V , > 2.0V, V = 5V 57 60 63 kHz O BRT_ADJ DC SLEEP IN1 * The inverter is capable of a lower output current than may be recommended by the panel manufacturer. It is the user’s responsibility to set the minimum brightness (BRITE) input at or above the panel specification for minimum current. Copyright © 2002 Microsemi Page 2 Rev. 1.0b, 2005-01-17 Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 WWW.Microsemi .COM E E E EL L L LE E E EC C C CT T T TR R R RI I I IC C C CA A A AL L L LS S S S PanelMatch™ LXM1618-05-6x 5V 6W CCFL Programmable Inverter Module I N TE G R A T E D P R O D U C TS PRODUCTION DATASHEET ELECTRICAL CHARACTERISTICS (CONTINUED) Unless otherwise specified, the following specifications apply over the recommended operating condition and ambient temperature of 25°C except where otherwise noted. LXM1618-05-6x Parameter Symbol Test Conditions Units Min Typ Max BRITE INPUT ` V = 0V -300 µA BRT_ADJ DC DC Input Current I BRT V = 3V 50 µA BRT_ADJ DC DC Minimum Input for Max. Lamp Current V I = Maximum Lamp Current 2.0 2.05 V BRT_ADJ O(LAMP) DC Minimum Input for Min. Lamp Current V I = Minimum Lamp Current 0.65* V BRT_ADJ O(LAMP) DC SLEEP INPUT ` V RUN Mode 2.0 V V IN1 DC SLEEP V SLEEP Mode -0.3 0.8 V DC SLEEP SET INPUT ` 1,2 SET Low Threshold V 0.4 V 1,2 L Input Current I V ≤ 0.4V -300 µA SET SET POWER CHARACTERISTICS ` Sleep Current I V = 5V , < 0.8V 0.0 5 20 µA IN(MIN) IN1 DC SLEEP DC V = 5V , ≥ 2.0V, I = Open IN1 DC SLEEP SET1 Run Current I 1090 mA RUN DC I = Ground, V = 640V SET2 LAMP RMS V = 5V , ≥ 2.0V, I = Open IN1 DC SLEEP SET1 Efficiency η 85 % I = Ground, V = 640V SET2 LAMP RMS * The Inverter is capable of a lower output current than may be recommended by the panel manufacturer. It is the user’s responsibility to set the minimum brightness (BRITE) input at or above the panel specification for minimum current. This is likely greater than the 0.65V minimum input. FUNCTIONAL PIN DESCRIPTION CONN PIN DESCRIPTION CN1 (Molex 53261-0890) Mates with 51021-0800 housing, 50079-8100 pins. Mates with LX9501 input cable assembly CN1-1 V Main Input Power Supply (4.75V < V < 5.25V) IN1 IN1 CN1-2 CN1-3 GND Power Supply Return CN1-4 CN1-5 ON/OFF Control. (0V < < 0.8 = OFF, >= 2.0V = ON SLEEP SLEEP SLEEP CN1-6 BRITE Brightness Control (0.65V to 2.0V ). 2.0V gives maximum lamp current. DC DC CN1-7 SET SET MSB Connecting this pin to ground decreases the output current 2 mA (see Table 1) 1 1 CN1-8 SET SET LSB Connecting this pin to ground decreases the output current 1 mA (see Table 1) 2 2 CN2 for LXM1618-05-61 and -62 (JST SM02(8.0)B-BHS-1-TB | Yeon Ho 20015WR-05A00 or SM02B-BHSS-1-TB | Yeon Ho 35001WR-02A00) High voltage connection to high Side of lamp. Connect to lamp terminal with shortest lead length. CN2-1 V HI DO NOT connect to Ground. Connection to low side of lamp. Connect to lamp terminal with longer lead length. CN2-2 V LO DO NOT connect to Ground CN2 for LXM1618-05-63 (Honda QZ-19-A3MYL#02) High voltage connection to high side of lamp. Connect to lamp terminal with shortest lead length. CN2-3 V HI DO NOT connect to Ground. Connection to low side of lamp. Connect to lamp terminal with longer lead length. CN2-1 V LO DO NOT connect to Ground Copyright © 2002 Microsemi Page 3 Rev. 1.0b, 2005-01-17 Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 WWW.Microsemi .COM P PA AC CK KA AG GE E D DA AT TA A PanelMatch™ LXM1618-05-6x 5V 6W CCFL Programmable Inverter Module I N TE G R A T E D P R O D U C TS PRODUCTION DATASHEET TABLE 1 SETTING OUTPUT CURRENT OUTPUT CURRENT SETTINGS SET SET 1 2 Nominal Output Current (Pin 7) (Pin 8) Open* Open* 8.0mA Open* Ground 7.0mA Ground Open* 6.0mA Ground Ground 5.0mA * If driven by a logic signal it should be open collector or open drain only, not a voltage source. PHYSICAL DIMENSIONS LXM1618-05-6X 100mm 3.94in. 85mm MOUNTING HOLE 3.35in 2.44MM –.08 DIA. X CN1 16mm 12.5mm CN2 0.63in. 0.492in 74mm –0.2mm Warning GROUNDED MOUNTING HOLE 2.91in 3.5mm High Voltage Present at 2.44MM –.08 DIA. 0.138in. 11mm high side of Transformer 0.433in. and Output Connector 1.0mm 0.0394in. 7.5mm Max 0.295in. PCB tolerances – 0.2mm , M2 or 2-56 recommended mounting screws Weight: (9g) typ . All dimensions are in millimeters, inches are reference only SIMPLIFIED BLOCK DIAGRAM +3V High Voltage Transformer V 10K HI V BRITE Controller V IN1 0.65 - and 2V DC Transformer +3V Driver 10K OC SENSE SET 1 +3V OV SENSE 10K I V SET 2 SENSE LO Copyright © 2002 Microsemi Page 4 Rev. 1.0b, 2005-01-17 Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 LAMP X WWW.Microsemi .COM APPLICATION APPLICATION PanelMatch™ LXM1618-05-6x 5V 6W CCFL Programmable Inverter Module I N TE G R A T E D P R O D U C TS PRODUCTION DATASHEET TYPICAL APPLICATION 5V ƒ The brightness control may be a voltage output DAC or other voltage source, a digital pot or 20K manual pot. The DAC or Pot V inverter contains an internal 10K pull-up to 3V to bias the BRITE IN1 pot add a 2.7K resistor to set the lower threshold voltage. 0.65V A 3.3V Logic Level PWM signal from a micro-controller 20K to 2.0V V HI may also be used as shown in Figure 1A. CCFL LXM1618-05-6x 2.7K ƒ If you need to turn the inverter ON/OFF remotely, connect TUBE to TTL logic signal to the input. SLEEP SLEEP ƒ Connect V to high voltage wire from the lamp. Connect V HI LO SET SET GND V to the low voltage wire (wire with thinner insulation). 1 2 LO Never connect V to circuit ground as this will defeat LO NC NC lamp current regulation. If both lamp wires have heavy high voltage insulation, connect the longest wire to V . LO This wire is typically white. Figure 1 – Brightness Control ƒ Use the SET and SET (see Figure 2) inputs to select the (output current set to maximum) 1 2 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 and efficiency correlates with driving the PW M Signal BRITE CCFL at the manufactures nominal current setting. from System However the SET and SET inputs allow the user the 1 2 flexibility to adjust the current to the maximum allowable P.W. output current to increase panel brightness at the expense LXM1618-05-6x of some reduced lamp life. 10µs to 125µS ƒ Although the SET pins are designed such that just leaving ~26% < P.W. < 100% of them open or grounding them is all that is needed to set the period output current, they can also be actively set. Using a open Figure 1A – PWM Brightness Control 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 5V could be set to higher brightness (maximum output current) for daytime illumination and lower brightness V BRITE IN1 (minimum or typical output current) at nighttime. Since V HI the dim ratio is a factor the peak output current, using this technique the effective dim ratio can be increased. CCFL LXM1618-05-6x Conversely the SET inputs could be used to overdrive the TUBE SLEEP lamp temporarily to facilitate faster lamp warm up at initial V lamp turn on. Of course any possible degradation on lamp LO SET SET GND 1 2 life from such practices is the users responsibility as not all lamps are designed to be overdriven. ƒ The inverter has a built in fault timeout function. If the output is open (lamp disconnected or broken) or shorted L L 5.0mA RMS the inverter will attempt to strike the lamp for several L H 6.0mA seconds. After about 2 to 4 seconds without success the RMS inverter will shutdown. In order to restart the inverter it is H L 7.0mA RMS necessary to toggle the sleep input or cycle the V input H H 8.0mA IN1 RMS supply. L=GND; H=Open Figure 2 – Max Output Current (SET and SET Inputs) 1 2 Copyright © 2002 Microsemi Page 5 Rev. 1.0b, 2005-01-17 Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 WWW.Microsemi .COM NOTES NOTES PanelMatch™ LXM1618-05-6x 5V 6W CCFL Programmable Inverter Module I N TE G R A T E D P R O D U C TS 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 © 2002 Microsemi Page 6 Rev. 1.0b, 2005-01-17 Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570