bcr402uw6 document number: ds 385543 rev. 1 C 2 1 of 7 www.diodes.com may 2016 ? diodes incorporated bcr402uw6 20 to 100 ma led c onstant c urrent regulator in sot26 description the bcr402u monolithically integrates a transistor, diodes and resistors to function as a constant current regulator (ccr) for led driving . the device regulates with a preset 2 0ma nominal that can be adjusted with an external resistor up to 100 ma. it is designed for driving leds in strings and will reduce current at increasing temperatures to self - protect . operating as a series linear ccr for led string current control , it can be used in applications with supply voltages up to 40 v. with no need for additional external components, this ccr is fully integrated into a sot26 minimizing pcb area and component count . applications constant current regulation (ccr) in: ? emergency lighting ? signage , advertising, decorative and architectural lighting ? retail lighting in fridge, freezer case and vending machines features ? led constant current regulator using pnp emitter - follower with emitter resistor to current limit ? i out = 2 0ma 10% constant current (preset) ? i out up to 100 ma adjustable with an external resistor ? negative temperature coefficient (ntc) reduces iout with increasing temperature ? parallel devices to increase regulated current ? totally lead - free & fully rohs c ompliant (notes 1 & 2) ? halogen and antimony free. green device (note 3) mechanical data ? cas e: sot26 (sc - 74) ? case m aterial: molded plastic. green molding compound. ul flammability rating 94v - 0 ? moisture sensitivity: level 1 per j - std - 020 ? terminals: finish - matte tin plated leads, solderable per mil - std - 202, method 208 ? weight: 0. 018 grams ( a pproximate) ordering information (note 4 ) product marking reel size (inches) tape width (mm) quantity per reel bcr402uw6 - 7 402 7 8 3 , 000 note s: 1 . no purposely added lead. fully eu directive 2002/95/ec (rohs) & 2011/65/eu (rohs 2) compliant. 2. see http://www.diodes.com/quality/lead_free.html for more information about diodes incorporateds definitions of hal ogen - and antimony - free, "green" and lead - f ree . 3. halogen - and antimony - free "green products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total br + cl) and <1000ppm antimony compounds. 4. for packaging d etails, go to our website at http : //www.diodes.com/products/packages.html . pin name pin function v s supply voltage out regulated output current rext external resistor for adjusting output current gnd power g round top view pin - out sot26 (sc - 74) top view internal device schematic gnd out out rext vs out
bcr402uw6 document number: ds 385543 rev. 1 C 2 2 of 7 www.diodes.com may 2016 ? diodes incorporated bcr402uw6 marking information date code key year 2016 2017 2018 2019 2020 2021 20 22 code d e f g h i j month jan feb mar apr may jun jul aug sep oct nov dec code 1 2 3 4 5 6 7 8 9 o n d absolute maximum ratings ( voltage relative to gnd, @ t a = +25c, unless otherwise specified.) characteristic symbol value unit supply voltage v s 40 v output current i out 1 0 0 ma output voltage v out 40 v reverse voltage between all terminals v r 0.5 v thermal characteristics characteristic symbol value unit power dissipation (note 5 ) p d 1,190 mw (note 6 ) 912 thermal resistance, junction to ambient (note 5 ) r ja 1 05 c/w ? (note 6 ) 1 37 thermal resistance, junction to lead (note 7 ) r jl 50 recommended operating junction temperature range t j - 55 to +150 c maximum operating junction and storage temperature range t j , t stg - 65 to +150 esd ratings (note 8 ) characteristics symbols value unit jedec class electrostatic discharge C human body model esd hbm 800 v 1b electrostatic discharge C machine model esd mm 300 v b notes: 5. for a device mounted with the out leads on 50mm x 50mm 2oz copper that is on a single - sided 1.6mm fr4 pcb; device is measured under still air conditions whil e operating in steady - state. 6. same as note 5, except mounted on 15mm x 15mm 1oz copper. 7 . r jl = thermal resistance from junction to solder - point ( at the end of the out leads ). 8 . refer to jedec specification jesd22 - a114 and jesd22 - a115 . 402 = part marking (see ordering information) ym = date code marking y = year (ex: d = 201 6 ) m = month (ex: 9 = september) 402 sot26 (sc - 74)
bcr402uw6 document number: ds 385543 rev. 1 C 2 3 of 7 www.diodes.com may 2016 ? diodes incorporated bcr402uw6 electrical characteristics (@ t a = +25c, unless otherwise specified.) characteristic symbol min typ max unit test condition collector - emitter breakdown voltage b v ceo 40 - - v i c = 1ma gnd ( enable ) current i g nd 340 420 500 a v s = 10v ; v out = open gnd ( enable ) current i gnd - 380 - a v s = 10v ; v out = 8.6v dc current gain h fe 100 220 470 - i c = 50ma; v ce = 1v internal resistor r int 38 44 52 ? rint = 2 0ma output current (nominal) i out 18 20 22 ma v out = 8 .6v ; v s = 10v voltage drop (v rext ) v drop - 0. 88 - v i out = 2 0ma lowest sufficient supply voltage (v s - v out) v smin - 1. 4 - v i out > 1 8ma output current c hange vs . temperature i out /i out - - 0.2 5 - %/c v s = 10v output current c hange v s . supply voltage i out /i out - 1 - %/v v s = 10v
bcr402uw6 document number: ds 385543 rev. 1 C 2 4 of 7 www.diodes.com may 2016 ? diodes incorporated bcr402uw6 typical thermal characteristics (@ t a = +25c, unless otherwise specified.) 100 1000 0 100 200 300 400 500 600 700 800 rth(ja) vs cu area copper area (mm 2 ) 100 1m 10m 100m 1 10 100 1k 0 25 50 75 100 125 t amb =25c 50mm * 50mm 2oz cu transient thermal impedance d=0.5 d=0.2 d=0.1 single pulse d=0.05 thermal resistance (c/w) pulse width (s) 100 1m 10m 100m 1 10 100 1k 1 10 t amb =25c 50mm * 50mm 2oz cu single pulse pulse power dissipation pulse width (s) maximum power (w) 100 1m 10m 100m 1 10 100 1k 0 25 50 75 100 125 150 t amb =25c 25mm * 25mm 2oz cu transient thermal impedance d=0.5 d=0.2 d=0.1 single pulse d=0.05 thermal resistance (c/w) pulse width (s) 100 1m 10m 100m 1 10 100 1k 1 10 single pulse t amb =25c 25mm * 25mm 2oz cu pulse power dissipation pulse width (s) maximum power (w) 0 50 100 150 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 rth(ja) (c/w) 25mm * 25mm 2oz cu 50mm * 50mm 2oz cu derating curve temperature (c) max power dissipation (w)
bcr402uw6 document number: ds 385543 rev. 1 C 2 5 of 7 www.diodes.com may 2016 ? diodes incorporated bcr402uw6 typical electrical characteristics ( c ontinued) ( @ t a = +25c, unless otherwise specified.) 0 5 10 15 20 25 30 35 40 0 5 10 15 20 25 30 20 40 60 80 100 10 20 30 40 50 60 70 0 5 10 15 20 25 30 35 40 10 20 40 60 80 0 5 10 15 20 25 30 35 40 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 5 10 15 20 25 30 35 40 10 12 14 16 18 20 22 24 -50 -25 0 25 50 75 100 125 150 0 10 20 30 40 50 60 70 v s -v out =1.4v r ext = open 85c 25c -40c i out (ma) i out (ma) t amb =25c v s =10v v s -v out =1.4v i out (ma) i s (ma) i out (ma) i out (ma) v s vs i out v s (v) v s (v) v s vs i out v s vs i s v s (v) t a vs i out r ext (ohms) r ext =68 ohms r ext = 100 ohms r ext = open r ext =39 ohms r ext =24 ohms v s vs i out v s -v out =1.4v v s (v) r ext = open out=open 25c r ext vs i out 85c -40c v s -v out =1v v s -v out =1.4v to 2v r ext = open v s =10v v s -v out =1.4v r ext = open r ext =27 ohms t a (c)
bcr402uw6 document number: ds 385543 rev. 1 C 2 6 of 7 www.diodes.com may 2016 ? diodes incorporated bcr402uw6 package outline dimensions please see http://www.diodes.com/package - outlines.html for the latest version. suggested pad layout please see http://www.diodes.com/package - outlines.html for the latest version. sot26 (sc74r) dim min max typ a1 0 .013 0. 10 0.0 5 a 2 1.00 1.30 1.10 a3 0.70 0.80 0.75 b 0. 35 0. 50 0. 38 c 0.10 0.20 0.15 d 2.90 3.10 3.00 e - - 0.95 e1 - - 1.90 e 2.70 3.00 2.80 e 1 1.50 1.70 1.60 l 0. 35 0. 55 0. 40 a - - 8 a1 - - 7 all dimensions in mm dimensions value (in mm) c 2.40 c 1 0.95 g 1.60 x 0.55 y 0.80 y1 3.20 sot26 (sc74r) sot26 (sc74r) a1 d e e1 e b a2 a1 seating plane l c a e1 a3 c1 y1 g x y c
bcr402uw6 document number: ds 385543 rev. 1 C 2 7 of 7 www.diodes.com may 2016 ? diodes incorporated bcr402uw6 important notice diodes incorporated makes no warranty of any kind, express or implied, with regards to this document, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose (and their equivalents under the laws of any jurisdiction). diodes incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. diodes incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does diodes incorporated convey any license unde r its patent or trademark rights, nor the rights of others. any customer or user of t his document or products described herein in such applications shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on diod es incorporated website, harmless against all damages. diodes incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthor ized sales channel. should customers purchase or use diodes incorporated products for any unintended or unauthorized application , customers shall indemnify and hold diodes incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising ou t of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. products described herein may be covered by one or more united states, international or foreign patents pending. product names and markings noted herein may also be covered by one or more united states, international or foreign trademarks. this document is written in english but may be translated into multiple languages for reference. only the english version of t his document is the final and determinative format released by diodes incorporated. life support diodes incorporated products are specifically not authorized for use as critical components in life support devices or system s without the express written ap proval of the chief executive officer of diodes incorporated. as used herein: a. life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided i n the labeling can be reasonably expected to result in significant injury to the user. b. a critical component is any comp onent in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. customers represent that they have all necessary expertise in th e safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety - related requirements concerning their products and any use of diodes incorporate d products in such safety - critical, life support devices or systems, notwithstanding any devices - or systems - related information or support that may be provided by diodes incorporated. further, customers must fully indemnify diodes incorpora ted and its re presentatives against any damages arising out of the use of diodes incorporated products in such safety - critical, life support devices or systems. copyright ? 201 6 , diodes incorporated www.diodes.com
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