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BCR402UW6
Document number: DS38543 Rev. 4 - 2
1 of 13
www.diodes.com
September 2017
© Diodes Incorporated
BCR402UW6
20 to 100mA LED CONSTANT CURRENT REGULATOR in SOT26 (SC74R)
Description
The BCR402UW6 monolithically integrates a transistor, diodes and
resistors to function as a Constant Current Regulator (CCR) for LED
driving. The device regulates with a preset 20mA nominal that can be
adjusted with an 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, 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 SOT26 (SC74R) 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
= 20mA ± 10% Constant Current (Preset)
I
OUT
up to 100mA Adjustable with an External Resistor
V
S
– 40V Supply Voltage
P
D
up to 1W in SOT26 (SC74R)
LED Dimming Using PWM up to 25kHz
Negative Temperature Coefficient (NTC) Reduces I
OUT
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)
Qualified to AEC-Q101 Standards for High Reliability
An Automotive-Compliant Part is Available Under Separate
Data Sheet (BCR402UW6Q)
Mechanical Data
Case: SOT26 (SC74R)
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)
Ordering Information (Note 4)
Product
Marking
Reel Size (inches)
Tape Width (mm)
Quantity per Reel
BCR402UW6-7
402
7
8
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 https://www.diodes.com/design/support/packaging/diodes-packaging/.
Pin Name
Pin Function
V
S
Supply Voltage
OUT
Regulated Output Current
R
ext
External resistor for
adjusting Output Current
GND
Power Ground
Top View
Pin-Out
SOT26 (SC74R)
Top View
GND
OUT
OUT
R
ext
V
S
OUT
Internal Device
Schematic
e3
Verzeichnis
- ・ Abmessungen des Paketumrisses on Seite 12
- ・ Paket-Footprint-Pad-Layout on Seite 12
- ・ Teilenummerierungssystem on Seite 1 Seite 2
- ・ Markierungsinformationen on Seite 1 Seite 2
- ・ Blockdiagramm on Seite 1
- ・ Typisches Anwendungsschaltbild on Seite 6 Seite 7
- ・ Technische Daten on Seite 2
- ・ Anwendungsbereich on Seite 1
- ・ Elektrische Spezifikation on Seite 3 Seite 5
