DS51 Datasheet, PDF (26/41 Pages) Lumileds Lighting Company – the most robust and powerful LED

Current Derating Curves
Current Derating Curve for 350 mA Drive Current
Cool White, Neutral White, Warm White
400
350
300
250
200
150
100
RRθ_J-JAA==5500^oºCC/ WW
RRθ_J-JAA==4400^oºCC/ WW
RRθ_J-JAA==3300^oºCC/ WW
50
0
50
75
100
125
150
175
T_A -TAA m- Abmiebniet nTet mTepmerpaetruarteu(rºeC()^{`</sup> C)
Figure 19: Maximum forward current vs. ambient temperature, based on T<sub>JMAX</sub> = 150ºC.
Current Derating Curve for 350 mA Drive Current
Green, Cyan, Blue and Royal Blue
400
350
300
250
200
150
100
R<sub>R</sub>θ<sub>JJ-AA</sub>=<sub>=</sub>5<sub>50</sub>0<sup>o</sup>º<sub>C</sub>C<sub>/</sub>/<sub>W</sub>W
R<sup>R</sup>θ<sub>J</sub>J-<sub>A</sub>A=<sup>=</sup>4<sup>40</sup>0<sup>o</sup>º<sup>C</sup>C<sup>/</sup>/<sup>W</sup>W
R<sup>R</sup>θ<sub>J</sub><sup>J-</sup><sub>A</sub><sup>A</sup>=<sup>=</sup>3<sup>30</sup>0<sup>o</sup>º<sup>C</sup>C<sup>/</sup>/<sup>W</sup>W
50
0
50
75
100
125
150
175
200
T<sub>A</sub> T- <sub>A</sub>A-mAbmiebniteTnet mTepmerpaeturraetu(ºrCe)(<sup>`} C)
Figure 20: Maximum forward current vs. ambient temperature, based on T_JMAX = 185ºC.
LUXEON K2 Datasheet DS51 (7/07)
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