BCR405UW6 50 to 100mA LED CONSTANT CURRENT REGULATOR in SOT26 Description Features The BCR405UW6 monolithically integrates a transistor, diodes and resistors to function as a Constant Current Regulator (CCR) for LED driving. The device regulates with a preset 50mA nominal that can be adjusted with external resistor up to 100mA. 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 then it can be used in applications with supply voltages up to 40V. LED Constant Current Regulator Using PNP Emitter-Follower with Emitter Resistor to Current Limit IOUT = 50mA ± 10% constant current (Preset) IOUT up to 100mA 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 Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) With no need for additional external components, this CCR is fully integrated into a SOT26 minimizing PCB area and component count. Applications Mechanical Data Constant current regulation (CCR) in: Emergency lighting Signage, advertising, decorative and architectural lighting Retail lighting in fridge, freezer case and vending machines Case: SOT26 (SC-74) Case Material: 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 (Approximate) SOT26 (SC-74) GND Rext Pin Name Pin Function OUT OUT Vs OUT OUT VS Rext Supply Voltage Regulated Output Current External resistor for adjusting Output Current Power Ground GND Top View Pin-Out Top View Internal Device Schematic Ordering Information (Note 4) Product BCR405UW6-7 Notes: Marking 405 Reel size (inches) 7 Tape width (mm) 8 Quantity per reel 3,000 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 Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 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 details, go to our website at http://www.diodes.com/products/packages.html. BCR405UW6 Document number: DS38544 Rev. 1 – 2 1 of 7 www.diodes.com May 2016 © Diodes Incorporated BCR405UW6 Marking Information SOT26 (SC-74) 405 = Part Marking (See Ordering Information) YM = Date Code Marking Y = Year (ex: D = 2016) M = Month (ex: 9 = September) 405 Date Code Key Year Code Month Code 2016 D 2017 E 2018 F 2019 G 2020 H 2021 I 2022 J Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1 2 3 4 5 6 7 8 9 O N D Absolute Maximum Ratings (Voltage relative to GND, @TA = +25°C, unless otherwise specified.) Characteristic Symbol Value Unit Supply Voltage VS 40 V Output Current IOUT 100 mA Output Voltage VOUT 40 V VR 0.5 V Symbol Value 1,190 912 105 137 Unit Reverse voltage between all terminals Thermal Characteristics Characteristic Power Dissipation Thermal Resistance, Junction to Ambient Thermal Resistance, Junction to Lead (Note 5) (Note 6) (Note 5) (Note 6) PD RθJA (Note 7) Recommended Operating Junction Temperature Range Maximum Operating Junction and Storage Temperature Range RθJL 50 TJ -55 to +150 TJ , TSTG -65 to +150 mW °C/W °C ESD Ratings (Note 8) Characteristics Electrostatic Discharge – Human Body Model Electrostatic Discharge – Machine Model Notes: Symbols ESD HBM ESD MM Value 800 300 Unit V V JEDEC Class 1B B 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 while operating in steady-state. 6. Same as Note 5, except mounted on 15mm x 15mm 1oz copper. 7. RθJL = Thermal resistance from junction to solder-point (at the end of the OUT leads). 8. Refer to JEDEC specification JESD22-A114 and JESD22-A115. BCR405UW6 Document number: DS38544 Rev. 1 – 2 2 of 7 www.diodes.com May 2016 © Diodes Incorporated BCR405UW6 Electrical Characteristics (@TA = +25°C, unless otherwise specified.) Characteristic Symbol Min Typ Max Unit BVCEO 40 - - V IC = 1mA GND (Enable) Current IGND 340 420 500 µA VS = 10V; VOUT = open GND (Enable) Current IGND - 380 - µA VS = 10V; VOUT = 8.6V DC Current Gain hFE 100 220 470 - IC = 50mA; VCE = 1V Internal Resistor Rint 13 16.5 22 Ω IRint = 50mA Output Current (nominal) IOUT 45 50 55 mA Voltage Drop (VRext) Vdrop - 0.83 - V IOUT = 50mA Lowest Sufficient Supply Voltage (VSVOUT) VSmin - 1.4 - V IOUT > 18mA ΔIOUT/IOUT - -0.25 - %/°C VS = 10V ΔIOUT/IOUT - 1.5 - %/V VS = 10V Collector-Emitter Breakdown Voltage Output Current Change vs. Temperature Output Current Change vs. Supply Voltage BCR405UW6 Document number: DS38544 Rev. 1 – 2 3 of 7 www.diodes.com Test Condition Vout = 8.6V; VS = 10V May 2016 © Diodes Incorporated BCR405UW6 (@TA = +25°C, unless otherwise specified.) 1.4 800 1.2 700 Rth(JA) (°C/W) Max Power Dissipation (W) Typical Thermal Characteristics 50mm * 50mm 2oz Cu 1.0 600 500 0.8 400 0.6 300 25mm * 25mm 2oz Cu 0.4 200 0.2 0.0 100 0 0 50 100 100 150 Copper Area (mm ) Rth(JA) VS Cu Area 125 T amb=25°C 100 75 50 Maximum Power (W) Thermal Resistance (°C/W) Derating Curve 50mm * 50mm 2oz Cu D=0.5 Single Pulse D=0.2 D=0.05 25 D=0.1 0 100µ 1m 10m 100m 1 10 100 1k Single Pulse T amb=25°C 10 50mm * 50mm 2oz Cu 1 100µ 1m Pulse Width (s) 10m 100m 1 10 100 1k Pulse Width (s) Transient Thermal Impedance Pulse Power Dissipation 150 T amb=25°C 125 Maximum Power (W) Thermal Resistance (°C/W) 1000 2 Temperature (°C) 25mm * 25mm 2oz Cu 100 D=0.5 75 50 D=0.2 Single Pulse D=0.05 25 D=0.1 0 100µ 1m 10m 100m 1 10 100 1k 100µ 1m 10m 100m 1 10 100 1k Pulse Width (s) Transient Thermal Impedance Document number: DS38544 Rev. 1 – 2 25mm * 25mm 2oz Cu 1 Pulse Width (s) BCR405UW6 Single Pulse T amb=25°C 10 Pulse Power Dissipation 4 of 7 www.diodes.com May 2016 © Diodes Incorporated BCR405UW6 Typical Electrical Characteristics (continued) (@TA = +25°C, unless otherwise specified.) 80 25°C Rext=24 Ohms IOUT (mA) IOUT (mA) 80 60 40 Rext= 82 Ohms Rext=40 Ohms Rext=Open 60 50 40 VS-VOUT=1.4V 20 1 -40°C 70 Rext=56 Ohms 5 10 15 20 VS-VOUT=1.4V 25 30 35 150°C 30 20 40 40 VS (V) 100 80 VS-VOUT=1.4V Rext=24 Ohms 70 -40°C VS=10V 60 IOUT (mA) 60 IOUT (mA) 80 Rext (Ohms)vs IOUT 80 50 Rext=40 Ohms 40 30 Rext= 56 Ohms -25 0 25 Rext=82 Ohms 50 75 85°C 25°C 20 20 60 Rext (Ohms) VS vs IOUT 40 85°C VS=10V 150°C VS-VOUT=1.4V Rext= OPEN Rext= OPEN 100 125 0 0 150 TJ (°C) 5 10 15 20 25 30 35 40 VS (V) TJ vs IOUT VS vs IOUT 2.0 VS-VOUT=1.4V to 2V 1.8 1.6 60 85°C 40 IS (mA) IOUT (mA) 1.4 VS-VOUT=1V 1.2 1.0 0.8 25°C 0.6 0.4 0.2 20 0 -40°C 5 10 15 20 25 VS (V) 30 35 40 0.0 0 Document number: DS38544 Rev. 1 – 2 10 15 20 25 30 35 40 VS (V) VS vs IOUT BCR405UW6 5 VS vs IS 5 of 7 www.diodes.com May 2016 © Diodes Incorporated BCR405UW6 Package Outline Dimensions Please see http://www.diodes.com/package-outlines.html for the latest version. SOT26 (SC74R) D E1 SOT26 (SC74R) Dim Min Max Typ A1 0.013 0.10 0.05 A2 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 E1 1.50 1.70 1.60 L 0.35 0.55 0.40 a 8° a1 7° All Dimensions in mm E b a1 e1 A2 A3 A1 Seating Plane e c L a Suggested Pad Layout Please see http://www.diodes.com/package-outlines.html for the latest version. SOT26 (SC74R) C1 Y1 G Dimensions Value (in mm) C 2.40 C1 0.95 G 1.60 X 0.55 Y 0.80 Y1 3.20 C Y X BCR405UW6 Document number: DS38544 Rev. 1 – 2 6 of 7 www.diodes.com May 2016 © Diodes Incorporated BCR405UW6 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). 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