1235 bordeaux drive, sunnyvale, ca 94089 t el: 408-222-8888 www .supertex.com cl520 general description the cl520 is a ?xed, linear current regulator designed for driving leds at 20ma. with a maximum rating of 90v, it is able to withstand transients without the need for additional transient protection circuitry. it is ideally suited for applications employing single or multiple leds. the minimum dropout voltage of 1.0v accomodates extra leds, permits lower supply voltages, and provides more ef?cient operation. the cl520 is offered in to-252(d-pak) and to-92 packages. typical application circuit linear, fixed constant current led driver features 20ma 10% constant current drive 1.0v dropout 90v rating for transient immunity temperature compensated 4.75 - 90v supply range applications specialty lighting low voltage signage ? ? ? ? ? ? ? contro l v in 4.75 C 90v ou t gn d vdd 100nf 20m a 20ma
2 cl520 1235 bordeaux drive, sunnyvale, ca 94089 t el: 408-222-8888 www .supertex.com -g indicates package is rohs compliant (green) absolute maximum ratings parameter value supply voltage, v dd -0.5v to +100v output voltage, v out -0.5v to +100v operating junction temperature -40c to +125c storage temperature -65c to +150c thermal characteristics absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these conditions is not implied. continuous operation of the device at the absolute rating level may affect device reliability. all voltages are referenced to device ground.. sym parameter min typ max units conditions jc thermal resistance, junction to case d-pak - 30 - o c/w --- to-92 - n/a - --- ja thermal resistance, junction to ambient d-pak - 81 - o c/w --- to-92 - 132 - --- sym parameter min typ max units conditions v dd supply voltage 4.75 - 90 v --- v out voltage at out pin 1 1.0 - 90 v --- t j junction temperature -40 - 125 o c --- c dd v dd bypass capacitor 100 - - nf recommended operating conditions (all voltages with respect to gnd pin) ordering information device package options to-252 (d-pak) to-92 cl520 cl520k4-g CL520N3-G pin con?gurations yy = year sealed ww = week sealed l = lot number = green packagin g si yyww cl520k4 llllll l yy = year sealed ww = week sealed = green packaging s i c l 5 2 0 y y w w to-92 (n3) to-252 (d-pak) (k4) vdd out gnd to-92 (n3) to-252 (d-pak) (k4) product marking notes: 1. thermal considerations may limit voltage to less than 90v. out vd d gnd package may or may not include the following marks: si or package may or may not include the following marks: si or
3 cl520 1235 bordeaux drive, sunnyvale, ca 94089 t el: 408-222-8888 www .supertex.com electrical characteristics (over recommended operating conditions. t a = 25 o c unless otherwise speci?ed. all voltages with respect to gnd pin ) sym parameter min typ max units conditions i dd current into vdd pin - - 1.0 ma --- i out current into out pin 18 20 22 ma 1.0v < v out < 90v - - 22 v out <1.0v i out(off) current into out pin with vdd pin open - - 10 a v dd = open v dd(off) voltage at vdd to shut off led current - - 1.0 v i out < 10a t on vdd applied on time - - 100 s --- t off vdd removed off time - - 100 s --- temperature effects 1.02 1.00 0.98 0.96 0.94 0.92 -50 0 5 0 1 00 15 0 junction temperature ( o c) curren t (normalized to 25 o c at v out = 1.0v) 120 25 -40 v out = 90v, 100m s v out = 1.0 v application circuits switched led contro l v in 4.75 C 90v ou t gn d vdd i out 100nf 20m a seperate led supply (v out may be higher or lower than v dd .) contro l v in ou t gn d vdd 20m a v dd
4 cl520 1235 bordeaux drive, sunnyvale, ca 94089 t el: 408-222-8888 www .supertex.com application circuits ground referenced leds contro l v in ou t gn d vdd 100nf 20m a pin description pin # name description to-252 d-pak (k4) to-92 (n3) 1 1 vdd supply voltage for the cl520. bypass locally with a 100nf capacitor to ground. 3 2 out constant current output (sink). 4 3 gnd circuit common. i led = i out + i dd v led + 4.75v v in v led + 90v
5 cl520 1235 bordeaux drive, sunnyvale, ca 94089 t el: 408-222-8888 www .supertex.com 3-lead to-252 d-pak package outline (k4) note: although 4 terminal locations are shown, only 3 are functional. lead number 2 was removed. 1. 1 2 3 4 l4 l5 b b2 e d1 e1 l1 l seating plane a1 gauge plane d e vi ew b front v iew side v iew rear v iew vi ew b 1 h c2 a l3 l2 b3 note 1 symbol a a1 b b2 b3 c2 d d1 e e1 e h l l1 l2 l3 l4 l5 1 dimen - sion (inches) min .086 .000* .025 .030 .195 .018 .235 .205 .250 .170 .090 bsc .370 .055 .108 ref .020 bsc .035 .025* .045 0 o 0 o nom - - - - - - .240 - - - - .060 - - - - - max .094 .005 .035 .045 .215 .035 .245 .217* .265 .182* .410 .070 .050 .040 .060 10 o 15 o jedec registration to-252, variation aa, issue e, june 2004. * this dimension is not speci?ed in the jedec drawing. drawings not to scale. supertex doc. #: dspd-3to252k4, version e041309.
supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such appl ications unless it receives an adequate product liability indemnification insurance agreement. supertex inc. does not assume responsibility for use of devices described, and limits its liabilit y to the replacement of the devices determined defective due to workmanship. no responsibility is assumed for possible omissions and inaccuracies. circuitry an d specifications are subject to change without notice. for the latest product specifications refer to the supertex inc . (website: http//ww w. supertex.com ) ?2009 supertex inc. all rights reserved. unauthorized use or reproduction is prohibited. supertex inc. 1235 bordeaux drive, sunnyvale, ca 94089 te l: 408-222-8888 www .supertex.com 6 (the package drawing(s) in this data sheet may not re?ect the most current speci?cations. for the latest package outline information go to http://www.supertex.com/packaging.htm l .) cl520 doc.# dsfp-cl520 a112009 3-lead to-92 package outline (n3) symbol a b c d e e1 e e1 l dimensions (inches) min .170 .014 ? .014 ? .175 .125 .080 .095 .045 .500 nom - - - - - - - - - max .210 .022 ? .022 ? .205 .165 .105 .105 .055 .610* jedec registration to-92. * this dimension is not speci?ed in the jedec drawing. ? this dimension differs from the jedec drawing. drawings not to scale. supertex doc.#: dspd-3to92n3, version e041009. seating plane 1 2 3 front v iew side v iew bottom v iew e1 e d e1 l e c 1 2 3 b a
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