the LX6523A is a hi g h per f ormance cc fl controller optimized f or small or medium size l c d-tv and other multi-lamp l c d displa y s y stems. it enables cost competitive solutions f or o ff -pf c hv-lip s inverter applications. the controller provides a pair o f s x v k s x o o 3 : 0 g u l y h v l j q d o v 7 k h r x w s x w g u l y h u v f d q g u l y h d s x v k s x o o k d o i e u l g j h r u i x o o e u l g j h & & ) / l q y h u w h u f r q ? j x u d w l r q z l w k t he addition o f simple external circuitr y. a n on-chip regulator supplies both the operating voltage for the output gate drive and bias to the internal control f l u f x l w u \ 7 k l v d o o r z v d g l u h f w f r q q h f w l r q r i w k h f r q w u r o o h u w r w k h v \ v w h p v x s s o \ h [ w h q g l q j w k h y r o w d j h x s w r 9 z l w k r x w h [ w h u q d o u h j x o d w r u v 7 k h o d p s f x u u h q w u h j x o d w l r q f l u f x l w f r p s u l v h v d v l p s o h d q g u r e x v w f r q w u r o o r r s g h v l j q z l w k j r r g u h j x o d w l r q d f f x u d f \ d q g g \ q d p l f u h v s r q v h d w w u d q v l h q w f r q g l w l r q v $ v r i w v w d u w i h d w x u h s u r y l g h v p r u h u h o l d e o h o d p s v w u l n h d q g d o o r z v h i i h f w l y h f r q w u r o r i w k h p ossible inverter start up surge current and lamp current/voltage overshoot. the LX6523A inte g rates jins purebla c k tm me g acontrast di g ital burst dimmin g f unctionalit y to provide true black me g a c ontrast capabilities f or cc fl based displa y s. in addition, reliable f ault detection and protection f unctions are f acilitated includin g open lamp, over volta g e, short circuit, and over current protection. furthermore, pro g rammable strikin g f requenc y , pro g rammable v w u l n h d q g s u r w h f w l r q w l p l q j d q g i d x o w l q g l f d w l r q d u h d o o e x l o w l q z l w k w k h y h u \ f r p s d f w f k l s g h v l j q 7 k h g h y l f h l v d y d l o d e o h l q d o h d g q d u u r z e r g \ 6 2 , & v x u i d f h p r x q w s d f n d j h z l w k d q l q g x v w u l d o w h p s h u d w x u h j u d g h u d w l q j LX6523A high performance ccfl controller product brief description ccfl controller for next generation of 37 inch and smaller lcd tvs, monitors or all-in-one pcs with ultra-realistic display quality and performance integrates jins pureblack tm k k megacontrast dimming m 400v off-pfc hv-lips suppor t > hal f -bridge or full-bridge drive support f or inverter s integrated jins pureblacktm mega dimming > s upports bur s t pwm dimming f or true zero percent d uty cyc l e operat i o n comprehensive brightness control modes > a na l og on l y @ a dj ust l amp current on ly > analog burst dimming @ analo g volta g e to burst pw m > di g ital burst dimmin g @ direct pwm burst in p u t multiple drive topolo g ies supporte d > push-pull, half-brid g e, and full-brid g e > 600ma sourcin g or sinkin g g ate driver s protection, lam p s trike, detection, and op eration > olp, ovp ( re g ulation/protection ) , oip and short circuit > pro g rammable strike and fault time ( run mode ) > pro g rammable strike frequenc y optimal system cost and increased efficiency > r educed number o f power stages increase e ff iciency at a reduced overall system b o m C easier regulatory agency compliance e nhanced image quality and more realistic vide o > s uperior black levels f or increased dynamic contrast ratio > g reat shadow detail f or a more enjoyable viewing experience increased flexibility and performanc e > wid e di mm i ng range an d mu l t i p l e arc hi tecture support > ease o f implementation > reduced cost with reduction o f external components e ase of use and flexibilit y > o ne device supports multiple inverter architectures and applications > reduces cost by eliminating need f or high current external bu ff er reliability, flexibility, ease o f use, and reduced c os t > user confi g urable, supports multiple panel t y pes and customer need > enhanced operation at ver y low dut y c y cles to avoid false open lamp protection while detectin g true open lamp detection key features % h q h ? w v applications > s mall to medium size l c d televisions > 19 to 30 multi-lam p lcd monitors > hi g h en d grap hi cs an d me di ca l i mag i ng mon i tors requ i r i ng hi g h est i mage qua li t y ! $ o o l q 2 q h 3 & v > cc fl, eefl, ffl backlight system s
product brief LX6523A additi ona l f ea t ures ! 9 w r 9 s r z h u u d l o r s h u d w l r q ? 9 d e v r o x w h p d [ l p x p ! 2 q f k l s y r o w d j h u h j x o d w r u ? : l w k 8 9 / 2 s u r w h f w l r q 3 2 5 > s o f t s tart c ontro l > hi g hl y accurate l amp operat i o n ? & x u u h q w f r q w u r o @ +/- 2% ? ) u h t x h q f \ v h w @ + / - 3 % ! 3 u r j u d p p d e o h 6 7 5 , . ( w l p h d q g 6 7 5 , . ( i u h t x h q f \ ! 3 u r j u d p p d e o h ) $ 8 / 7 w l p h ! 3 u r j u d p p d e o h % 8 5 6 7 g l p p l q j frequenc y > enable control si g na l ! 6 x s s r u w v 6 w u l n h 5 x q i u h t x h q f \ ratios ( t y pical ) > jin balancer optimized to support w u x h ? ] h u r % 8 5 6 7 g x w \ f \ f o h d immin g > i ndustrial temperature g rade ? ? & w r ? & ! o h d g q d u u r z e r g \ 6 2 , & isolation, drive and power stage circuitry ac+ ac- l1b1 rs1 rs2 l1b2 isns l1b1 l1b2 jin current balancing ccfl lamps ccfl lamps voltage and current sensing power input v dd regulator control / reset power stage pwm driver pwm steering shut down control protection voltage sense current sense soft start comp fault pwm_dim a_out b_out analog_dim enable vin vsns b_out isns ac rectification , pfc, tv smps voltages inverter transformer 24 v inverter supply or 400 v pfc inverter supply lx ? 6523a supports 400v pfc or 24v inverter applications lx ? 6523a pure black ? megacontrast dimming frequency enable 6 l p s o l h g % o r f n ' l d j u d p hv-lips overall s y stem dia g ram lx 6 5 23 aid so i c , 14 lead, narrow body, roh s compliant, pb- f ree, industrial temperature, tubes e ja = 86 c/ w l x 6 5 23 aid ? tr so i c , 14 lead, narrow body, roh s compliant, pb- f ree, industrial temperature, tape and reel @ 2500 p cs/ree l e ja = 86 c/ w microsemi c orporation, analog mixed s ignal g roup, 11861 western ave., g arden g rove, c a 92841 ph: +1 ( 714 ) 898-812 1 o rderin g in f ormatio n t echnical su pp ort information: f or lx6503a / LX6523A and other ccfl or displa y famil y of products, please contact y our local m icrosemi field applications en g ineer. f or more information about microsemi p roducts and the name of a local re p resentative, distributor or sales p erson, s o h d v h y l v l w z z z p l f u r v h p l f r p r u f r q w d f w x v d w r u
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