1235 bordeaux drive, sunnyvale, ca 94089 t el: 408-222-8888 www .supertex.com cl2 features 5.0 to 90v operating range (v a-b ) 20ma 10% at 5.0 - 90v 0.01%/c typical temperature coef?cient available in to-243aa (sot-89), to-252 (d-pak), & to-92 packages can be parallel ed for higher current applications led driver industrial lamp indicators signage accent lighting automotive constant current source constant current sink ? ? ? ? ? ? ? ? ? ? ? ? general description the supertex cl2 is a high voltage, temperature compensated, constant current source. the device is trimmed to provide a constant current of 20ma10% at an input voltage of 5.0 - 90v. the device can be used as a two terminal constant current source or constant current sink. a typical application for the cl2 is to drive leds with a constant current of 20ma. multiple cl2s can also be used in parallel to provide higher currents such as 40ma, 60ma or 80ma. the device is available in to-243aa (sot-89), to-252 (d-pak), and to-92 packages. typical application circuit simple 90v, 20ma, temperature compensated constant current led driver ic va vb up to 90v + v led(total) + v led(total) - va vb functional circuit diagram cl 2 i led <20m a control circuit and t emperature compensation 100nf
2 cl2 1235 bordeaux drive, sunnyvale, ca 94089 t el: 408-222-8888 www .supertex.com ordering information device package options to-252 (d-pak) to-92 to-243aa (sot-89) cl2 CL2K4-G cl2n3-g cl2n8-g -g indicates package is rohs compliant (green) absolute maximum ratings parameter value operating voltage, v a-b 100v operating junction temperature, t j -40c to +125c storage temperature, t s -55c to +150c 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. thermal characteristics package power dissipation @t a = 25 o c (w) jc ( o c/w) ja ( o c/w) to-252 2.0* 6.0 50* to-92 0.6 125 170 to-243aa 1.3* 15 78* pin con?gurations * mounted on fr4 board; 25mm x 25mm x 1.57mm sym parameter min typ max units conditions v a-b operating voltage 5.0 - 90 v --- i a-b current regulation 18.0 20 22 ma v a-b = 5.0v - 90v i a-b /t i a-b temperature coef?cient - 0.01 - %/ o c v a-b = 45v, t j = -40 o c to +100 o c t j operating junction temperature -40 - 125 o c --- r a-b dynamic resistance - 300k - --- electrical characteristics (t a = 25c unless otherwise speci?ed) yy = year sealed ww = week sealed l = lot number = green packagin g si yyww cl2 llllll l yy = year sealed ww = week sealed = green packaging s i c l 2 y y w w cl2 w w = code for week sealed = green packagin g to-252 (d-pak) (k4) to-92 (n3) to-92 (n3) to-243aa (sot-89) (n8) to-252 (d-pak) (k4) to-243aa (sot-89) (n8) product marking nc va vb va n/c vb va n/c vb vb package may or may not include the following marks: si or package may or may not include the following marks: si or package may or may not include the following marks: si or
3 cl2 1235 bordeaux drive, sunnyvale, ca 94089 t el: 408-222-8888 www .supertex.com output current vs voltage temperature characteristics 0. 98 0. 99 1. 00 1. 01 1. 02 1. 03 -5 5 -35 -1 5 5 25 45 65 85 10 5 1 25 14 5 te mp er at ur e (c) cu rr en t, nor ma liz ed to 25 c 5v 45 v 90 v 0 5 10 15 20 25 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 100 v a-b i a-b (m a) functional circuit diagram equivalent block diagram va control circuit and te mperature compensation vb 20m a 10% va vb
4 cl2 1235 bordeaux drive, sunnyvale, ca 94089 t el: 408-222-8888 www .supertex.com cl2 for higher current cl2 for multiple led strings i le d ~ 20m a vb va cl 2 up to 90v +v led(total) i le d ~ 20m a vb va cl 2 i le d ~ 20m a vb va cl 2 i le d ~ 20m a vb va cl 2 + v led(total) - 100nf vb va cl 2 up to 90v +v led(total) vb va cl 2 i le d ~ 60m a vb va cl 2 + _ v le d (total ) 100nf
5 cl2 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.
6 cl2 1235 bordeaux drive, sunnyvale, ca 94089 t el: 408-222-8888 www .supertex.com 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
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 liability to the replacement of the devices determined defective due to workmanship. no responsibility is assumed for possible omissions and inaccuracies. circuitry and specifications are subject to change without notice. for the latest product specifications refer to the supertex inc. website: http//www .supertex.com . ?2009 all rights reserved. unauthorized use or reproduction is prohibited . 1235 bordeaux drive, sunnyvale, ca 94089 te l: 408-222-8888 www .supertex.com 7 cl2 (the package drawings 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 .) doc.# dsfp-cl2 a051909 3-lead to-243aa (sot-89) package outline (n8) symbol a b b1 c d d1 e e1 e e1 h l dimensions (mm) min 1.40 0.44 0.36 0.35 4.40 1.62 2.29 2.00 ? 1.50 bsc 3.00 bsc 3.94 0.89 nom - - - - - - - - - - max 1.60 0.56 0.48 0.44 4.60 1.83 2.60 2.29 4.25 1.20 jedec registration to-243, variation aa, issue c, july 1986. ? this dimension differs from the jedec drawing drawings not to scale . supertex doc. #: dspd-3to243aan8, version e051509. b b1
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