BCR402UW6Q
20 TO 100mA LED CONSTANT CURRENT REGULATOR IN SOT26
Description
Features
This Linear LED driver is designed to meet the stringent requirements
of automotive applications.
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The BCR402UW6Q 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 the 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 = 20mA ± 10% Constant Current (Preset)
IOUT up to 100mA Adjustable with an External Resistor
VS – 40V Supply Voltage
PD up to 1W in SOT26
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LED Dimming Using PWM up to 25kHz
Negative Temperature Coefficient (NTC) Reduces IOUT with
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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)
The BCR402UW6Q is suitable for automotive applications
requiring specific change control; this part is AEC-Q101
qualified, PPAP capable, and manufactured in IATF 16949
certified facilities.
https://www.diodes.com/quality/product-definitions/
Applications
Mechanical Data
Constant Current Regulation (CCR) in automotive LED lighting:
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Interior and Exterior Automotive LED Lighting
Dome and Mood Lighting
Puddle Lighting
Side Marker Lights
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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
Internal Device
Schematic
Top View
Pin Function
Supply Voltage
Regulated Output Current
External Resistor for
Adjusting Output Current
Power Ground
Top View
Pin-Out
Ordering Information (Note 4)
Part Number
BCR402UW6Q-7
Notes:
Compliance
Automotive
Marking
402
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) & 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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