BCR 402U E6433 Infineon Technologies, BCR 402U E6433 Datasheet - Page 16

• Manufacturer Part Number: BCR 402U E6433
• Description: LED Lighting Drivers LED Driver 18V 60mA
• Manufacturer: Infineon Technologies

Specifications of BCR 402U E6433

• Rohs: yes
• Part # Aliases: BCR402UE6433XT

4
Figure 4-1 Application Circuit: Stand alone current source
Figure 4-2 Application Circuit: Boost mode current source with external power transistor
Application hints
BCR402U serves as an easy to use constant current source for LEDs. In stand alone application an external
resistor
Figure
resistance formed by the parallel connection of
into account that the resulting output currents will be slightly lower due to the self heating of the component and
the negative thermal coefficient.
In boost mode configuration the LED current can be extended to drive high power LEDs. Please visit our web site
www.infineon.com/lowcostleddriver
Datasheet
3-8. Connecting a low tolerance resistor
R
ext
can be connected to adjust the current between 20 mA and 65 mA.
Application hints
GND
GND
for detailed application notes.
1
1
I
I
S
S
OUT
OUT
R
int
R
and
ext
2,3,5
2,3,5
I
I
out
out
4
V
6
R
4
V
6
R
16
R
S
S
will improve the overall accuracy of the current sense
ex t
ex t
ext
R
(optional )
(optional )
1
leading to an improved current accuracy. Please take
R
2
R
R
+V
+V
ex t
ex t
S
S
I
LED
V
V
drop
drop
R
ext
can be determined by using
Revision 2.0, 2012-04-13
Application hints
BCR402U