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PDF BCR402UW6 Data sheet ( Hoja de datos )

Número de pieza BCR402UW6
Descripción 20 to 100mA LED CONSTANT CURRENT REGULATOR
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BCR402UW6
20 to 100mA LED CONSTANT CURRENT REGULATOR in SOT26
Description
The BCR402U 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 a SOT26 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
IOUT = 20mA ± 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)
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
BCR402UW6-7
Marking
402
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.
BCR402UW6
Document number: DS385543 Rev. 1 2
1 of 7
www.diodes.com
May 2016
© Diodes Incorporated

1 page




BCR402UW6 pdf
Typical Electrical Characteristics (continued) (@TA = +25°C, unless otherwise specified.)
BCR402UW6
80
R =24 Ohms
ext
R =39 Ohms
V -V =1.4V
S OUT
ext
60
40
20
R = open
ext
R = 100 Ohms
ext
R =68 Ohms
ext
10
0 5 10 15 20 25 30 35 40
V (V)
S
V vs I
S OUT
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
30
25
85°C
25°C
-40°C
OUT=OPEN
R = OPEN
ext
5 10 15 20 25 30 35 40
V (V)
S
V vs I
SS
-40°C
20
15 85°C
10
25°C
5
V -V =1.4V
S OUT
R = open
ext
0
0 5 10 15 20 25 30 35 40
V (V)
S
V vs I
S OUT
70
60
50
40
30
20
10
20
V -V =1.4V
S OUT
V =10V
S
T =25°C
AMB
40 60
R (Ohms)
ext
R vs I
ext OUT
80
100
24
V -V =1.4V to 2V
S OUT
22
20
18
V -V =1V
S OUT
16
14
R = Open
ext
12
10
0 5 10 15 20 25 30 35
V (V)
S
V vs I
S OUT
40
70
60 V -V =1.4V
S OUT
50
V =10V
S
40
R =27 Ohms
ext
30 R = open
ext
20
10
0
-50 -25 0 25 50 75 100 125 150
T (°C)
A
T vs I
A OUT
BCR402UW6
Document number: DS385543 Rev. 1 2
5 of 7
www.diodes.com
May 2016
© Diodes Incorporated

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