XMLBWT-00-0000-0000T5051 Datasheet, PDF (5/12 Pages) Cree, Inc – Cree® XLamp® XM-L2 LEDs

xlamp xm-l2 leds
Thermal Design
Thermal Design The maximum forward current is determined by the thermal resistance between the LED junction and ambient. It is
crucial for the end product to be designed in a manner that minimizes the thermal resistance from the solder point to
Cool White
ambient in order to optimize lamp life and optical characteristics.
3500
3000
2500
2000
1500
1000
500
Rj-a = 4°C/W
Rj-a = 7°C/W
Rj-a = 10°C/W
Rj-a = 15°C/W
0
0
25
50
75
100
125
150
Ambient Temperature (ºC)
Relative Intensity vs. Current (Tj = 85°C)
Relative Flux vs. Current (T_J = 85 °C)
350
300
250
200
150
100
50
0
0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000
Forward Current (mA)
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