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1. product profile 1.1 general description led driver consisting of resistor-equipped pnp transistor with two diodes on one chip in an sot457 (sc-74) plastic package. 1.2 features and benefits ? stabilized output current of 50 ma ? high current accuracy at supply voltage variation ? low voltage overhead of 1.4 v ? qualified according to aec-q101 ? reduces component count and board space ? high power dissipation of 750 mw ? stabilized output curren t adjustable up to 65 ma when an external resistor is used 1.3 applications ? constant current led driver ? generic constant current source ? automotive applications 1.4 quick reference data NCR405U 50 ma led driver in sot457 rev. 1 ? 10 december 2013 product data sheet sot457 table 1. quick reference data symbol parameter conditions min typ max unit i out stabilized output current v s = 10 v; v out = 8.6 v 42 50 58 ma v s supply voltage - - 40 v
NCR405U all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 1 ? 10 december 2013 2 of 15 nxp semiconductors NCR405U 50 ma led driver 2. pinning information 3. ordering information 4. marking table 2. pinning pin symbol description simplified outline graphic symbol 1 gnd ground 2 iout output current 3 iout output current 4 vs supply voltage 5 iout output current 6 rext external resistor 13 2 4 56 54 6 12 3 aaa-010101 table 3. ordering information type number package name description version NCR405U sc-74 (tsop6) plastic surface-mounted package; 6 leads sot457 table 4. marking codes type number marking code NCR405U dc
NCR405U all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 1 ? 10 december 2013 3 of 15 nxp semiconductors NCR405U 50 ma led driver 5. limiting values [1] between all terminals. [2] device mounted on an fr4 printed-circuit board (p cb); single-sided copper; tin-plated and standard footprint. [3] device mounted on an fr4 pcb; single-sided copper; tin-plated and mounting pad for output 1 cm 2 . [4] device mounted on an fr4 pcb; 4-layer copper; tin-plated and standard footprint. [5] device mounted on an fr4 pcb; 4-layer copper; tin-plated and mounting pad for output 1 cm 2 . table 5. limiting values in accordance with the absolute maximum rating system (iec 60134). symbol parameter conditions min max unit i out stabilized output current if external resistor is used -65ma v s supply voltage - 40 v v out output voltage v s = 40 v - 38 v v r reverse voltage [1] -0.5v p tot total power dissipation t amb ? 25 ?c [2] -475mw t amb ? 25 ?c [3] -650mw t amb ? 25 ?c [4] -750mw t amb ? 25 ?c [5] - 1100 mw t j junction temperature - 150 ?c t amb ambient temperature ? 55 +150 ?c t stg storage temperature ? 65 +150 ?c (1) fr4 pcb, 4-layer copper; standard footprint. (2) fr4 pcb, single-sided copper; standard footprint. fig 1. power derating curve t amb (c) -75 175 125 25 75 -25 aaa-010053 0.4 0.6 0.2 0.8 1 p tot (w) 0 (1) (2)
NCR405U all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 1 ? 10 december 2013 4 of 15 nxp semiconductors NCR405U 50 ma led driver 6. thermal characteristics [1] device mounted on an fr4 pcb; single-sided copper; tin-plated and standard footprint. [2] device mounted on an fr4 pcb; single-sided copper; tin-plated and mounting pad for output 1 cm 2 . [3] device mounted on an fr4 pcb; 4-layer copper; tin-plated and standard footprint. [4] device mounted on an fr4 pcb; 4-layer copper; tin-plated and mounting pad for output 1 cm 2 . table 6. thermal characteristics symbol parameter conditions min typ max unit r th(j-a) thermal resistance from junction to ambient in free air [1] --2 6 5k / w [2] --1 9 0k / w [3] --1 6 5k / w [4] --1 1 5k / w r th(j-sp) thermal resistance from junction to solder point in free air - - 50 k/w fr4 pcb, single-sided copper, standard footprint fig 2. transient thermal impedance from junction to am bient as a function of pu lse duration; typical values aaa-010054 10 -5 10 10 -2 10 -4 10 2 10 -1 t p (s) 10 -3 10 3 1 10 2 10 10 3 z th(j-a) (k/w) 1 0 0.02 0.05 0.1 0.2 0.33 0.5 0.75 duty cycle = 1 0.01
NCR405U all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 1 ? 10 december 2013 5 of 15 nxp semiconductors NCR405U 50 ma led driver fr4 pcb, 4-layer copper, standard footprint fig 3. transient thermal impedance from junction to am bient as a function of pu lse duration; typical values aaa-010055 10 -5 10 10 -2 10 -4 10 2 10 -1 t p (s) 10 -3 10 3 1 10 2 10 10 3 z th(j-a) (k/w) 1 0 0.01 0.02 0.05 0.1 0.2 0.33 0.5 0.75 duty cycle = 1
NCR405U all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 1 ? 10 december 2013 6 of 15 nxp semiconductors NCR405U 50 ma led driver 7. characteristics table 7. characteristics t amb = 25 ? c; pulse test: t p ? 300 ? s; ? = 0.02; unless otherwise specified. symbol parameter conditions min typ max unit i out stabilized output current v s =10v; v out =8.6v 425058ma i gnd ground current v s =10v; i out = 0 a 340 420 500 ? a r int internal resistance i rint = 50 ma 12 16 21 ? v rint voltage drop at internal resistance r int i out = 50 ma - 0.80 - v v smin lowest suffic ient supply voltage overhead v s ? v out i out > 42 ma - 1.4 - v ? i out / (i out ?? t amb ) stabilized output current change over ambient temperature v s =10v; v out =8.6v - ? 0.3 - %/k ? i out / (i out ?? v s ) stabilized output current change over supply voltage v s =10v; v s ? v out =1.4v -1-%/v v s ? v out = 1.4 v; t amb = 25 ? ci out = 0 ma fig 4. output current as a function of supply voltage; typical values fig 5. ground current as a function of supply voltage; typical values aaa-010288 10 2 i out (ma) 10 v s (v) 040 30 10 20 r ext = 56 r ext = open r ext = 82 v s (v) 040 30 10 20 aaa-010057 0.8 1.6 2.4 i gnd (ma) 0 t amb = 80 c t amb = -40 c t amb = 25 c
NCR405U all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 1 ? 10 december 2013 7 of 15 nxp semiconductors NCR405U 50 ma led driver r ext = open; t amb = 25 ? cv s ? v out = 1.4 v; r ext = open fig 6. output current as a function of supply voltage; typical values fig 7. output current as a function of supply voltage; typical values v s = 10 v; v out = 8.6 v fig 8. output current as a function of external resistor; typical values aaa-010289 10 2 i out (ma) 10 v s (v) 040 30 10 20 v s - v out = 1.4 v - 2 v v s - v out = 1 v aaa-010290 10 2 i out (ma) 10 v s (v) 040 30 10 20 t amb = -40 c t amb = 25 c t amb = 80 c 10 2 i out (ma) 10 r ext () 040 30 10 20 aaa-010291 t amb = -40 c t amb = 25 c t amb = 80 c
NCR405U all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 1 ? 10 december 2013 8 of 15 nxp semiconductors NCR405U 50 ma led driver 8. application information figure 9 shows a typical application circuit for an led driver. the constant current ensures a constant led brightness. the outp ut current can be adjusted between 50 ma and 65 ma by connecting an external resistor r ext . figure 8 gives a first indication for choosing the external resistor r ext . the output current slightly decreases when the power load at led driver increases. this effect is due to the self heating of the device and the negative thermal coefficient of the output current. the output can be switched on and off by connecting a resistor-equipped transistor (ret), e.g. pdtc124xu; see figure 10 . fig 9. led driver application diagram fig 10. switching the current on/off; application diagram aaa-010022 v cc v s r ext rext iout i out led gnd r int 006aaa025 in / out v cc vs r ext rext iout i out led gnd gnd out
NCR405U all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 1 ? 10 december 2013 9 of 15 nxp semiconductors NCR405U 50 ma led driver 9. test information 9.1 quality information this product has been qualified in accordance with the automotive electronics council (aec) standard q101 - stress test qualificat ion for discrete semiconductors , and is suitable for use in automotive applications.
NCR405U all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 1 ? 10 december 2013 10 of 15 nxp semiconductors NCR405U 50 ma led driver 10. package outline fig 11. package outline sot457 (sc-74) references outline version european projection issue date iec jedec jeita sot457 sc-74 wb m b p d e pin 1 index a a 1 l p q detail x h e e v m a a b y scale c x 13 2 4 5 6 0 1 2 mm plastic surface-mounted package (tsop6); 6 leads sot457 unit a 1 b p cd e h e l p qy wv mm 0.1 0.013 0.40 0.25 3.1 2.7 0.26 0.10 1.7 1.3 e 0.95 3.0 2.5 0.2 0.1 0.2 dimensions (mm are the original dimensions) 0.6 0.2 0.33 0.23 a 1.1 0.9 05-11-07 06-03-16
NCR405U all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 1 ? 10 december 2013 11 of 15 nxp semiconductors NCR405U 50 ma led driver 11. soldering fig 12. reflow soldering footprint for sot457 (sc-74) fig 13. wave soldering footprint for sot457 (sc-74) solder lands solder resist occupied area solder paste sot457_fr 3.45 1.95 2.8253.3 0.45 (6) 0.55 (6) 0.7 (6) 0.8 (6) 2.4 0.95 0.95 dimensions in mm sot457_fw 5.3 5.05 1.45 (6) 0.45 (2) 1.5 (4) 2.85 1.475 1.475 solder lands solder resist occupied area preferred transport direction during soldering dimensions in mm
NCR405U all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 1 ? 10 december 2013 12 of 15 nxp semiconductors NCR405U 50 ma led driver 12. revision history table 8. revision history document id release date data sheet status change notice supersedes NCR405U v.1 20131210 product data sheet - -
NCR405U all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 1 ? 10 december 2013 13 of 15 nxp semiconductors NCR405U 50 ma led driver 13. legal information 13.1 data sheet status [1] please consult the most recently issued document before initiating or completing a design. [2] the term ?short data sheet? is explained in section ?definitions?. [3] the product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple device s. the latest product status information is available on the internet at url http://www.nxp.com . 13.2 definitions draft ? the document is a draft versi on only. the content is still under internal review and subject to formal approval, which may result in modifications or additions. nxp semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall hav e no liability for the consequences of use of such information. short data sheet ? a short data sheet is an extract from a full data sheet with the same product type number(s) and title. a short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. for detailed and full information see the relevant full data sheet, which is available on request vi a the local nxp semiconductors sales office. in case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. product specification ? the information and data provided in a product data sheet shall define the specification of the product as agreed between nxp semiconductors and its customer , unless nxp semiconductors and customer have explicitly agreed otherwis e in writing. in no event however, shall an agreement be valid in which the nxp semiconductors product is deemed to offer functions and qualities beyond those described in the product data sheet. 13.3 disclaimers limited warranty and liability ? information in this document is believed to be accurate and reliable. however, nxp semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such info rmation. nxp semiconductors takes no responsibility for the content in this document if provided by an information source outside of nxp semiconductors. in no event shall nxp semiconductors be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. notwithstanding any damages that customer might incur for any reason whatsoever, nxp semiconductors? aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the terms and conditions of commercial sale of nxp semiconductors. right to make changes ? nxp semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. this document supersedes and replaces all information supplied prior to the publication hereof. suitability for use in automotive applications ? this nxp semiconductors product has been qualified for use in automotive applications. unless otherwise agreed in writing, the product is not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical systems or equipment, nor in applications where failure or malfunction of an nxp semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. nxp semiconductors and its suppliers accept no liability for inclusion and/or use of nxp semiconducto rs products in such equipment or applications and therefore such inclusion and/or use is at the customer's own risk. applications ? applications that are described herein for any of these products are for illustrative purpos es only. nxp semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. customers are responsible for the design and operation of their applications and products using nxp semiconductors products, and nxp semiconductors accepts no liability for any assistance with applications or customer product design. it is customer?s sole responsibility to determine whether the nxp semiconductors product is suitable and fit for the customer?s applications and products planned, as well as fo r the planned application and use of customer?s third party customer(s). customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products. nxp semiconductors does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer?s applications or products, or the application or use by customer?s third party customer(s). customer is responsible for doing all necessary testing for the customer?s applic ations and products using nxp semiconductors products in order to av oid a default of the applications and the products or of the application or use by customer?s third party customer(s). nxp does not accept any liability in this respect. limiting values ? stress above one or more limiting values (as defined in the absolute maximum ratings system of iec 60134) will cause permanent damage to the device. limiting values are stress ratings only and (proper) operation of the device at these or any other conditions above those given in the recommended operating conditions section (if present) or the characteristics sections of this document is not warranted. constant or repeated exposure to limiting values will permanently and irreversibly affect the quality and reliability of the device. terms and conditions of commercial sale ? nxp semiconductors products are sold subject to the gener al terms and conditions of commercial sale, as published at http://www.nxp.com/profile/terms , unless otherwise agreed in a valid written individual agreement. in case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. nxp semiconductors hereby expressly objects to applying the customer?s general terms and conditions with regard to the purchase of nxp semiconducto rs products by customer. document status [1] [2] product status [3] definition objective [short] data sheet development this document contains data from the objecti ve specification for product development. preliminary [short] data sheet qualification this document contains data from the preliminary specification. product [short] data sheet production this document contains the product specification.
NCR405U all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 1 ? 10 december 2013 14 of 15 nxp semiconductors NCR405U 50 ma led driver no offer to sell or license ? nothing in this document may be interpreted or construed as an offer to sell products t hat is open for acceptance or the grant, conveyance or implication of any licens e under any copyrights, patents or other industrial or intellectual property rights. export control ? this document as well as the item(s) described herein may be subject to export control regu lations. export might require a prior authorization from competent authorities. quick reference data ? the quick reference data is an extract of the product data given in the limiting values and characteristics sections of this document, and as such is not comple te, exhaustive or legally binding. translations ? a non-english (translated) version of a document is for reference only. the english version shall prevail in case of any discrepancy between the translated and english versions. 13.4 trademarks notice: all referenced brands, produc t names, service names and trademarks are the property of their respective owners. 14. contact information for more information, please visit: http://www.nxp.com for sales office addresses, please send an email to: salesaddresses@nxp.com
nxp semiconductors NCR405U 50 ma led driver ? nxp b.v. 2013. all rights reserved. for more information, please visit: http://www.nxp.com for sales office addresses, please se nd an email to: salesaddresses@nxp.com date of release: 10 december 2013 document identifier: NCR405U please be aware that important notices concerning this document and the product(s) described herein, have been included in section ?legal information?. 15. contents 1 product profile . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 general description . . . . . . . . . . . . . . . . . . . . . 1 1.2 features and benefits . . . . . . . . . . . . . . . . . . . . 1 1.3 applications . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.4 quick reference data . . . . . . . . . . . . . . . . . . . . 1 2 pinning information . . . . . . . . . . . . . . . . . . . . . . 2 3 ordering information . . . . . . . . . . . . . . . . . . . . . 2 4 marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 5 limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 3 6 thermal characteristics . . . . . . . . . . . . . . . . . . 4 7 characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8 application information. . . . . . . . . . . . . . . . . . . 8 9 test information . . . . . . . . . . . . . . . . . . . . . . . . . 9 9.1 quality information . . . . . . . . . . . . . . . . . . . . . . 9 10 package outline . . . . . . . . . . . . . . . . . . . . . . . . 10 11 soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 12 revision history . . . . . . . . . . . . . . . . . . . . . . . . 12 13 legal information. . . . . . . . . . . . . . . . . . . . . . . 13 13.1 data sheet status . . . . . . . . . . . . . . . . . . . . . . 13 13.2 definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 13.3 disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 13.4 trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 14 14 contact information. . . . . . . . . . . . . . . . . . . . . 14 15 contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

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