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description key fe a tures 8v to 18v input v oltage range 30% smaller than cs-zvs models v ersatile brightness control input microamp sleep mode open and shorted lamp protection 8.3mm max. module height, 16mm width fixed frequency operation applic a tions notebook and sub-notebook computers portable instrumentation automotive displays desktop displays airline entertainment centers benefits high efficienc y , line v oltage regulation and sleep mode extend computer battery life smooth, wide-range brightness control gives y our product a high quality image output v oltage regulation minimizes corona discharge for long life and high reliability single output inverter ideal for por- table applications . the lxm1610 se- ries of direct drive tm ccfl (cold cath- ode fluorescent lamp) inverter modules are specifically designed for driving lcd backlight lamps. they excel in applica- tions where critical parameters include dimmability, high efficiency and reliable fail-safe design in a small fo r m facto r . these inverters are recommended for use in panels with low-voltage insulation on the lamp retu r n wi r e. wide input v oltage range. the modules convert unregulated dc volt- age from the system battery or ac adapter directly to high-frequency, high-voltage waves required to ignite and operate ccfl lamps. input voltage can range from 8 to 18 volts. di r ect drive t echnology. the mod- ule design is based on a new direct drive topology, which provides a number of cost and perfo r mance advantages. the LXM1610-01 series direct drive invert- product highlight d irect d rive o utpu t a rchitecture d irec t d rive ccfl i nve r ter m odule p roduction d ata s heet t he i nfinite p ower of i nno v a tion LXM1610-01 p a tents p ending ers eliminate the classic r esonant induc- tor and capacitors, thus reducing cost and allowing a 30% r eduction in module size. fixed-f r equency operation . other benefits of this new topology are fixed- f r equency operation and secondary-side strike-voltage regulation. strike-voltage regulation minimizes corona discha r ge in the output transfo r mer and r elated ci r - cuitry, providing longer life and higher r eliability. dimming featu r es . the lxm1610 modules a r e equipped with a dimming input that pe r mits brightness control from an exte r nal potentiometer or dc voltage. in addition, the sleep input r educes mod- ule power to a few microwatts in shut down mode. all lxm1610 modules fea- ture both output open and short-circuit protection. the lxm1610 is fully customizable (electronically and me- chanically) to specific customer requi r e- ments. i sns ccfl gnd brite v sns v in sleep copyright ? 2001 rev. 1.1a 01/04 1 11861 w ester n a venue , g arde n g rove , ca. 92841, 714-898-8121, f a x : 714-893-2570 l i n f inity m icroelectronics i nc . direct drive architecture includes two load feedback control loops to provide uncompromised ccfl ignition and operation characteristics. lamp current is regulated in the ccfl return lead (i sns loop) to insure constant light output with changing lamp parameters and power supply voltage. this also allows accurate and repeatable brightness control. dimming ratio with the lx1610 analog dimming inverters is typically 5:1 when driving 12.1 to 15 inch lcd panels. if no current flows in the ccfl return path because of an unstruck or failed lamp, the inverter applies full strike voltage potential. the output voltage feedback loop (v sns ) takes control and regulates output voltage to 1650v rms . this insures the lamp will ignite under worst case tempera- ture and aging conditions. because output voltage is actively regulated, it will never exceed component and panel insulation ratings. this prevents destructive corona discharge to insure long term reliability of the system. LXM1610-01 module order inform a tion lin d o c #: 1610 note: for current data & package dimensions, visit our web site: http://www.linfinity.com. not recommended for new design

LXM1610-01 product d a t abook 1996/1997 u6/7 t t 2001 rev. 1. 1a 01/04 2 p roduction d ata s heet p a tent p ending
(note 1) input supply voltage (v in ) .............................................................................................................................. ......................... . -0.3v to 18v output voltage, no loa d ....................................................................................................... . ..................... . internally limited to 1800v rms output curren t ................................................................................................................. ........................... . 10.0ma rms (internally limited) output powe r ................................................................................................................... .................................................................... . 6.0w input signal voltage, (sleep and brite inputs ) ................................................................................ . ................................... . -0.3v to v in ambient operating temperatur e ................................................................................................. . ........................................... . 0c to 70c storage temperature rang e ..................................................................................................... . ............................................ . -40c to 85c note 1 . exceeding these ratings could cause damage to the device. all voltages are with respect to ground. currents are positiv e into, negative out of the specified terminal.

this module has been designed to operate over a wide range of input and output conditions. however, best efficiency and perfor mance 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. input supply voltage range (functional) v in input supply voltage (fully regulated lamp current) v in output power p o brightness control input voltage range v brt adj lamp operating voltage v lamp lamp current - full brightness i olamp operating ambient temperature range t a parameter symbol units recommended operating conditions min. r.c. max. 8 1 2 1 8 v 9 1 2 1 6 v 4 5 w 0.0 2.5 v 540 675 800 v rms 7.0 ma rms 0 7 0 c unless otherwise specified, these specifications apply over the recommended operating conditions and 25c ambient temperature f or the lxm161 0 . full bright lamp current i l (max) v brt adj = 2.5v dc , sleep = high, v in = 9v dc minimum lamp current (note 2) i l (min) v brt adj = 0v dc , sleep = high, v in = 9v dc lamp start voltage v ls 0c < t a < 40c operating frequency f o v brt adj = 2.5v dc , sleep = high, v in = 12v dc output pin characteristics parameter symbol test conditions units LXM1610-01 min. typ. max. 6.3 7.0 7.7 ma rms 2.0 2.5 3.0 ma rms 1500 1800 v rms 52 57 62 kh z brite input input current i brt v brt adj = 0v dc input voltage for max. lamp current v c i o (lamp) = 100% input voltage for min. lamp current v c i o (lamp) = minimum -62 a dc 2.5 v dc 0v dc 2.2 v in v dc -0.3 0.8 v dc 120 180 a dc power characteristics sleep current i in (min) v in = 15v dc , sleep 0.8v 10 50 a dc run mode v sleep (hi) sleep mode v sleep (lo) input current i sleep sleep = 5.0v sleep input note 2. minimum lamp current required to maintain even light output may vary with display panel. v ref ouput v ref output voltage v ref r l 1m ? v ref source impedance r ref 4.9 5.1 5.3 v dc 10 ?

LXM1610-01 product d a t abook 1996/1997 u6/7 t t 2001 rev. 1. 1a 01/04 p roduction d ata s heet p a tent p ending

conn. pin description input power supply. (8v ? ? do not connect to ground. connection to low side of lamp. connect to lamp terminal with longer lead length. do not connect to ground.
LXM1610-01 brite v hi v in sleep gnd ccfl tube 9v dc -18v dc 1k 1k 5v agnd v ref 0v v lo figure 1 ? potentiometer brightness control not recommended for new design

LXM1610-01
2001 rev. 1. 1a 01/04 4 p roduction d ata s heet p a tent p ending

3.93 (100) 2.06 (52.25) 0.64 (16) 1 cn1 .031 (0.79) .326 max. (8.3) warning!! high voltage present 0.15 (3.85) ? 0.116 (2.95) grounded mounting hole 2.36 (60) 1.20 (30.5) cn2 ',-(! ../01212311425006 production data - information contained in this document is proprietary to linfinity and is current as of publication date. this document may not be modified in any way without the express written consent of linfinity. product processing does not neccessarily include testing of all parameters. linfiniyt reserves the right to change the configuration and performance of the product and to discontinue product at any time.

7- ',%#"(! 128%*!9: ;218%"! 9 '25!:3164001//<"(=$>1 7?&&-"56)!) &!!) 128%) !!%: ;218) !#&! rangemax an d direct drive are trademarks of linfinity microelectronics inc. not recommended for new design

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