BCR405U Infineon Technologies, BCR405U Datasheet

IC, LED DRIVER, LINEAR, SC-74-6

BCR405U

Manufacturer Part Number
BCR405U
Description
IC, LED DRIVER, LINEAR, SC-74-6
Manufacturer
Infineon Technologies
Type
Linearr
Datasheet

Specifications of BCR405U

Led Driver Application
General, Automotive Lighting
No. Of Outputs
3
Output Current
50mA
Input Voltage
1.4V To 40V
Dimming Control Type
Digital
Topology
Linear
Packages
SC74
Vs (min)
1.4 V
Vs (max)
40.0 V
Iout (typ)
50.0 mA
Iout (max)
65.0 mA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Manufacturer
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LED Driver
Features
Applications
General Description
The BCR405U is a cost efficient LED driver to drive low power LED’s. The advantages
towards resistor biasing are:
The advantages towards discrete solutions are:
Dimming is possible by using an external digital transistor at the ground pin.
The BCR405U can be operated at higher supply voltages by putting LED’s between the
power supply +VS and the power supply pin of the LED driver. You can find further details
in the application note AN097.
The BCR405U is a perfect fit for numerous low power LED applications by combining small
form factor with low cost. These LED drivers offer several advantages to resistors like
significantly higher current control at very low voltage drop ensuring high lifetime of LED’s.
(negative thermal coefficient)
Low voltage overhead of 1.4V
No EMI
High power dissipation of 750mW
RoHS compliant (pb-free) small and robust SC-74 package
Qualified according to AEC Q101
Channel letters for advertising, LED strips for decorative lighting
Aircraft, train, ship illumination
Automotive applications like CHMSL and rear combination lights
LED drive current of 50mA
Output current adjustable up to 65mA with external resistor
Supply voltage up to 40V
Easy paralleling of drivers to increase current
High current accuracy at supply voltage variation
Reduced output current at higher temperatures - Negative thermal coefficient of -0.2% / K
Retrofits for general lighting, white goods like refrigerator lighting
Medical lighting
homogenous light output despite varying forward voltages in different LED strings
homogenous light output of LED’s despite voltage drop across long supply lines
homogenous light output independent from supply voltage variations
longer lifetime of the LED’s due to reduced output current at higher temperatures
lower assembly cost
smaller form factor
better quality due to less soldering points
higher output current accuracy due to pretested LED drivers
1
6
5
4
BCR405U
2009-07-31
1
2
3

Related parts for BCR405U

BCR405U Summary of contents

Page 1

... Medical lighting Automotive applications like CHMSL and rear combination lights General Description The BCR405U is a cost efficient LED driver to drive low power LED’s. The advantages towards resistor biasing are: homogenous light output despite varying forward voltages in different LED strings homogenous light output of LED’s despite voltage drop across long supply lines homogenous light output independent from supply voltage variations longer lifetime of the LED’ ...

Page 2

... Application Note Thermal Resistance thJA Typical Application Rext 5 Out 4 Vs Pin Configuration 1 = GND 2;3 out Symbol out V out 125 °C tot stg Symbol R thJS 2 BCR405U + tio Package SC74 S ext Value 0.5 750 150 -65 ... 150 Value 50 2009-07- Unit °C Unit ...

Page 3

... Output current change versus Output current change versus =25°C, unless otherwise specified A Symbol V BR(CEO int I out V drop V Smin out out out out S 3 BCR405U Values Unit min. typ. max 340 420 500 µA 100 220 470 - 0.75 0 -0.15 - %/K ...

Page 4

... Total power dissipation P 1000 mW 800 700 600 500 400 300 200 100 Permissible Pulse Load totmax totDC Permissible Pulse Load R tot 100 120 °C 150 0.005 0.01 0.02 0.05 0.1 0.2 0 BCR405U = thJS 2 1 0.5 0.2 0 0.1 0.05 0.02 0.01 0.005 2009-07- ...

Page 5

... Output current versus supply voltage 20°C out Parameter S out - Supply current versus supply voltage Parameter A 0.002 A 0.0016 0.0014 0.0012 0.001 0.0008 0.0006 0.0004 0.0002 Output current versus supply voltage out T = Parameter BCR405U ) 80°C 20°C -40° 1 out -40°C 20°C 80° 2009-07- ...

Page 6

... V = 10V, V out ext Parameter -40°C 20°C 80° Reference Voltage (Vdrop) versus µA ... 10 mA out Output current - 1.4 V out out R EXT ext Reference Voltage (Vdrop) versus I 6 BCR405U ), V = 10V 1 out = Parameter 0 -50 - 100 = 10 mA ... 65 mA out 2009-07-31 56 Ohm open °C 150 T S ...

Page 7

... Application hints BCR405U serves as an easy to use constant current source for LEDs. In stand alone application an external resistor can be connected to adjust the current from mA. Rext can be determined by using the diagram 'Output current versus external resistor refering to diagram 'Reference voltage versus output current'. Look for your desired output current on the x axis and read out the corresponding Vdrop ...

Page 8

... For symmetric types no defined Pin 1 orientation in reel. SC74 Package ±0.2 B (0.35 +0.1 0.35 -0.05 0 0.95 1.9 0.5 0.95 Manufacturer 2005, June Date code (Year/Month) BCW66H Type code 4 3.15 Pin 1 marking 8 BCR405U 1.1 MAX. +0.1 0.15 -0.06 A 0.1 MAX. 0 0.2 1.15 2009-07-31 ...

Page 9

... Life support devices or systems are intended to be implanted in the human body support and/or maintain and sustain and/or protect human life. If they fail reasonable to assume that the health of the user or other persons may be endangered. 9 BCR405U 2009-07-31 ...

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