Characteristic Curves
TheseꢀareꢀrepresentativeꢀmeasurementsꢀforꢀtheꢀTR5270ꢀLEDꢀproduct.ꢀActualꢀcurvesꢀwillꢀvaryꢀslightlyꢀforꢀtheꢀvariousꢀ
radiantꢀfluxꢀandꢀdominantꢀwavelengthꢀbins.ꢀ
Relative Intensity vs. Forward Current
Relative Light Intensity Vs Junction Temperature
200%
175%
150%
125%
100%
75%
100%
95%
90%
85%
80%
75%
70%
50%
25%
0%
0
62.5
125
187.5
250
25
50
75
100
125
150
If (mA)
Junction Temperature (°C)
Wavelength Shift vs. Forward Current
Dominant Wavelength Shift Vs Junction Temperature
3
2
6
5
4
1
3
0
2
1
-1
-2
-3
0
-1
-2
0
62.5
125
187.5
250
25
50
75
100
125
150
If (mA)
Junction Temperature (°C)
Forward Current vs. Forward Voltage
Voltage Shift Vs Junction Temperature
200
175
150
125
100
75
0
-0.050
-0.100
-0.150
-0.200
-0.250
-0.300
-0.350
-0.400
50
25
0
0
1
2
3
4
25
50
75
100
125
150
Vf (V)
Junction Temperature (°C)
Cree, Inc.
4600 Silicon Drive
Durham, NC 27703-8475 USA
Tel: +1-919-313-5300
Copyright © 2011-2012 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree
and the Cree logo are registered trademarks, and TR and TR5270 are trademarks of Cree, Inc.
Fax: +1-919-313-5870
www.cree.com/chips
5
CPR3ET Rev. A
CREE [ CREE, INC ]
