BCR401UW6
10 to 100mA LED CONSTANT CURRENT REGULATOR in SOT26
Description
Features
The BCR401UW6 monolithically integrates a transistor, diodes and
resistors to function as a Constant Current Regulator (CCR) for LED
driving. The device regulates with a preset 10mA 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, it can be used in applications with supply voltages up to 40V.
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With no need for additional external components, this CCR is fully
integrated into a SOT26 minimizing PCB area and component count.
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LED Constant Current Regulator Using PNP Emitter-Follower
with Emitter Resistor to Current Limit
IOUT = 10mA ± 10% Constant Current (Preset)
IOUT up to 100mA Adjustable with an External Resistor
VS – 40V Supply Voltage
PD up to 1W in SOT26
LED Dimming Using PWM up to 25kHz
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)
For automotive applications requiring specific change
control (i.e. parts qualified to AEC-Q100/101/200, PPAP
capable, and manufactured in IATF 16949 certified
facilities), please contact us or your local Diodes
representative.
https://www.diodes.com/quality/product-definitions/
An Automotive-Compliant Part is Available Under Separate
Datasheet (BCR401UW6Q)
Applications
Mechanical Data
Constant Current Regulation (CCR) in:
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Emergency Lighting
Signage, Advertising, Decorative and Architectural Lighting
Retail Lighting in Fridge, Freezer Case and Vending Machines
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Case: SOT26
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
Pin Name
VS
OUT
Rext
GND
Pin Function
Supply Voltage
Regulated Output Current
External resistor for
adjusting Output Current
Power Ground
Top View
Pin-Out
Top View
Internal Device
Schematic
Ordering Information (Note 4)
Product
BCR401UW6-7
Notes:
Compliance
Standard
Marking
401
Reel Size (inches)
7
Tape Width (mm)
8
Quantity per Reel
3000
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ 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
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