Characteristic Curves
TheseꢀareꢀrepresentativeꢀmeasurementsꢀforꢀtheꢀEZBrightꢀPowerꢀChipꢀLEDꢀproduct.ꢀActualꢀcurvesꢀwillꢀvaryꢀslightlyꢀforꢀtheꢀ
variousꢀradiantꢀfluxꢀandꢀdominantꢀwavelengthꢀbins.
Voltage Shift vs. Junction Temperature
Forward Current vs. Forward Voltage
0.100
0.000
500
400
300
200
100
0
-0.100
-0.200
-0.300
-0.400
-0.500
-0.600
0
1
2
3
4
5
25
50
75
100
125
150
Vf (V)
Junction Temperature (°C)
Relative Intensity vs. Forward Current
Relative Light Intensity vs. Junction Temperature
200%
175%
150%
125%
100%
75%
110%
105%
100%
95%
90%
85%
80%
75%
70%
65%
50%
25%
0%
0
50 100 150 200 250 300 350 400 450 500 550 600 650 700 750
25
50
75
100
125
150
If (mA)
Junction Temperature (°C)
Dominant Wavelength Shift vs. Junction Temperature
Wavelength Shift vs. Forward Current
6
5
4
3
2
1
0
16
12
8
4
0
-4
-8
-12
-16
-1
-2
0
50 100 150 200 250 300 350 400 450 500 550 600 650 700 750
25
50
75
100
125
150
If (mA)
Junction Temperature (°C)
Cree,ꢀInc.
4600ꢀSiliconꢀDrive
Durham,ꢀNCꢀ27703
USAꢀTel:ꢀ+1.919.313.5300
www.cree.com
Copyrightꢀ©ꢀ2008-2010ꢀCree,ꢀInc.ꢀAllꢀrightsꢀreserved.ꢀTheꢀinformationꢀinꢀthisꢀdocumentꢀisꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.ꢀCreeꢀ
andꢀtheꢀCreeꢀlogoꢀareꢀregisteredꢀtrademarks,ꢀandꢀEZBright,ꢀEZ,ꢀandꢀEZ700ꢀareꢀtrademarksꢀofꢀCree,ꢀInc.ꢀ
4
CPR3DW Rev. B
CREE [ CREE, INC ]
