DS51 Datasheet, PDF (29/41 Pages) Lumileds Lighting Company – the most robust and powerful LED

Current Derating Curve for 1000 mA Drive Current
Cool White, Neutral White, Warm White, Green, Cyan, Blue and Royal Blue
1200
1000
800
600
400
200
Rθ_{J A}=30ºC/W
Rθ_{J A}=25ºC/W
Rθ_{J A}=20ºC/W
Rθ_{J A}=15ºC/W
0
0
25
50
75
100 125 150 175
T_A - ATAm-bAimenbiteTnet Tmepmepreartauturere((º°CC))
Figure 25: Maximum forward current vs. ambient temperature, based on T_JMAX = 150ºC.
Current Derating Curve for 1500 mA Drive Current
Cool White, Neutral White, Warm White, Green, Cyan, Blue and Royal Blue
1800
1500
1200
900
600
300
Rθ_{J A}=20ºC/W
Rθ_{J A}=15ºC/W
0
0
25
50
75
100
125
150
175
T_A - ^TAAm^{- A}b^mie^bn^ietⁿT^te^Tm^emp^pe^era^rat^tu^ure ⁽(^°º^CC⁾)
Figure 26: Maximum forward current vs. ambient temperature, based on T_JMAX = 150ºC.
LUXEON K2 Datasheet DS51 (7/07)
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