features applications ? switch-mode, single or dual led controller ? 5.0v to 55v input voltage range, up to 80v boosted output voltage ? boost-, boost-to-battery-, buck-to-battery- or sepic- topology ? constant current regulation implemented ? differential high-side sense up to 60v ? high-frequency pwm dimming capability ? 10:1 analog dimming capability for led binning ? digital dimming up to 5000:1 at 100hz pwm ? integrated softstart ? advanced in-system diagnostic (e.g. gnd loss, output-overload and highside-feedback diagnostics) ? very low sleep mode currents of typ. 8a ? integrated automotive ldos for 5v & 3.3v ? aec-q100 qualified ? junction temperature range -40c to +150c ? automotive led lighting applications ? general indoor and outdoor lighting and signals ? tft backlighting ? general current driven applications general description e522.32 and e522.34 are parts of a family of fxed fre - quency switch-mode high voltage led power supplies and controllers with high effciency. integrated high - side sensing allows topologies related to gnd (boost- to-gnd or sepic) as well as related to input voltage (boost-to-battery or buck-to-battery, particularly in harsh automotive environments. the switching frequency is adjustable up to 600khz by an external resistor or can be synchronized in master- slave confgurations with other devices. the phase shift of 180 between channels essentially reduces emi. de - vices are available as 2-channel with spread spectrum oscillators (e522.32) and as 2- channel without spread spectrum (e522.34) versions to optimize size and ef - fort of the application. multiple control- and monitor - ing functions, e.g. short- and open load detection, over - temperature shutdown and undervoltage lockout are implemented. ordering information cs1n fbl1 fbh1 ? boost to battery circuit ? ? boost to gnd circuit ? ovp1 ovp2 vsm fbl2 fbl2 dim2 vin vin fbh2 dim1 cs1p cgate1 drvs pgnd cgate2 cs2p cs2n vsm vsm v3v3 adim1 adim2 rt cmp1 cmp2 errb1 fbh2 ovpin2 ovpo ovpin1 fbh1 fbl1 errb2 c fbl1 fbh1 ovp1 ovp2 fbh2 fbl2 c c dim1 c vsm lgate2 lgate1 pwdim2 pwdim1 oscin on vin vin agnd dim2 e522.32 product id oscillator spectrum package e522.32 spread qfn32l5 e522.34 narrow qfn32l5 typical application circuit e522.32/34 elmos semiconductor ag info sheet qm-no.: 25is0078e.03 this document contains information on a pre-production product. elmos semiconductor ag reserves the right to change specifcations and information herein without notice. switch-mode constant current led controller family preliminary information - mar 6, 2013
note elmos semiconductor ag (below elmos) reserves the right to make changes to the product contained in this publication without notice. elmos assumes no responsibility for the use of any circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. while the information in this publication has been checked, no responsibility, however, is assumed for inaccuracies. elmos does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of a life-support system or to signi? cantly affect its safety or effectiveness. products are not authorized for use in such applications. copyright ? 2013 elmos reproduction, in part or whole, without the prior written consent of elmos, is prohibited. headquarters elmos semiconductor ag heinrich-hertz-str. 1 44227 dortmund (germany) phone: +49 (0) 231 / 75 49-100 fax: +49 (0) 231 / 75 49-149 sales-germany@elmos.com www.elmos.com r egional sales and application support office munich elmos semiconductor ag am ge? uegelhof 12 85716 unterschlei?heim/eching (germany) phone: +49 (0) 89 / 31 83 70-0 fax: +49 (0) 89 / 31 83 70-31 sales-germany@elmos.com sa les and application support office north america elmos na. inc. 32255 northwestern highway, suite 45 farmington hills, mi 48334 (united states) phone: +1 (0) 248 / 8 65 32 00 sales-usa@elmosna.com s ales and application support office korea and japan elmos korea b-1007, u-space 2, #670 daewangpangyo-ro, sampyoung-dong, bunddang-gu, sungnam-si kyounggi-do 463-400 korea phone: +82 (0)31 / 7 14 11 31 sales-korea@elmos.com sales a nd application support office c h ina elmos semiconductor technology (shanghai) co., ltd. unit london, 1bf gc tower, no. 1088 yuanshen road, pudong new district, shanghai, pr china, 200122 phone: +86 (0) 21 / 51 78 51 88 fax: +86 (0) 21 / 51 78 52 05 sales-china@elmos.com ?? ? ? ? ???1088 ??1b???, 200122 : +86 (0) 21 / 51 78 51 88 : +86 (0) 21 / 51 78 52 05 sales-china@elmos.com sal es and application support office sing apor e elmos semiconductor singapore pte ltd. 60 alexandra terrace #09-31 the comtech (singapore 118502) phone: +65 (0) 663 / 5 11 41 fax: +65 (0) 663 / 5 11 40 sales-singapore@elmos.com elmos support 03/2013
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