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BCR405U fiches techniques PDF

Infineon Technologies AG - LED Driver

Numéro de référence BCR405U
Description LED Driver
Fabricant Infineon Technologies AG 
Logo Infineon Technologies AG 





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BCR405U fiche technique
BCR405U
LED Driver
Features
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
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Low voltage overhead of 1.4V
High current accuracy at supply voltage variation
No EMI
High power dissipation of 750mW
Reduced output current at higher temperatures - Negative thermal coefficient of -0.2% / K
RoHS compliant (pb-free) small and robust SC-74 package
Qualified according to AEC Q101
Applications
Channel letters for advertising, LED strips for decorative lighting
Aircraft, train, ship illumination
Retrofits for general lighting, white goods like refrigerator lighting
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’s due to reduced output current at higher temperatures
(negative thermal coefficient)
The advantages towards discrete solutions are:
lower assembly cost
smaller form factor
better quality due to less soldering points
higher output current accuracy due to pretested LED drivers
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.
1 2009-07-31

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