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Diodes - 50 to 100mA LED CONSTANT CURRENT REGULATOR

Numéro de référence BCR405UW6
Description 50 to 100mA LED CONSTANT CURRENT REGULATOR
Fabricant Diodes 
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BCR405UW6 fiche technique
BCR405UW6
50 to 100mA LED CONSTANT CURRENT REGULATOR in SOT26
Description
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.
With no need for additional external components, this CCR is fully
integrated into a SOT26 minimizing PCB area and component count.
Features
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)
Applications
Constant current regulation (CCR) in:
Emergency lighting
Signage, advertising, decorative and architectural lighting
Retail lighting in fridge, freezer case and vending machines
Mechanical Data
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)
Top View
Internal Device
Schematic
GND
OUT
OUT
Rext
OUT
VS
Top View
Pin-Out
Pin Name
Vs
OUT
Rext
GND
Pin Function
Supply Voltage
Regulated Output Current
External resistor for
adjusting Output Current
Power Ground
Ordering Information (Note 4)
Product
BCR405UW6-7
Marking
405
Reel size (inches)
7
Tape width (mm)
8
Quantity per reel
3,000
Notes:
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

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