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Using Infineon‘s BCR400 Family of Constant-Current, Linear-Mode LED Drivers for Lighting Applications from 10 mA - 700 mA

Nov 01, 2007

Infineon Technologies


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65 mA, or “How do I drive ½ W and 1 W LEDs?
of this applications note.'>1.1 What’s New?
Infineon Technologies' linear-mode BCR400 series LED driver family has been described previously in
applications note AN066 to address applications up to 65 mA. This applications note primarily emphasizes 'high
current' applications from 65 mA up to ~ 700 mA. For the higher currents, a standard LED driver IC is used in
conjunction with an external "boost" transistor to increase current range beyond 65 mA., e.g. for driving ½ W and
1 W LEDs. The reader who is familiar with the basic features and requirements of designing with these drivers can
skip directly to section “Boost” Concept, for LED Currents > 65 mA, or “How do I drive ½ W and 1 W LEDs?
of this applications note.



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