DS51 Datasheet, PDF (10/41 Pages) Lumileds Lighting Company – the most robust and powerful LED

Electrical Characteristics at 1000mA
Part Numbers LXK2 xxx4 xxx, Junction Temperature, T_J = 25ºC
Color
Cool White^[4]
Neutral White^[4]
Warm White^[4]
Green^[4]
Cyan^[4]
Blue^[4]
Royal Blue^[4]
Forward Voltage V_f ^[1]
(V)
Min.
Typ.
Max.
3.03
3.72
4.95
3.03
3.72
4.95
3.03
3.72
4.95
3.03
3.72
4.95
3.03
3.72
4.95
3.03
3.72
4.95
3.03
3.72
4.95
Table 6.
Typical
Dynamic
Resistance ^[2]
(Ω)
R_D
0.6
0.6
0.6
0.6
0.6
0.6
0.6
Typical Temperature
Coefficient of
Forward
Voltage ^[3]
(mV/^oC)
ΔV_F / ΔT_J
2.0
2.0
2.0
2.0
2.0
2.0
2.0
Typical
Thermal
Resistance
Junction to
Case (^oC/W)
Rθ_{J C}
9 (13 for Star)
9 (13 for Star)
9 (13 for Star)
9
9
9
9
Notes for Table 6:
1. Philips Lumileds maintains a tolerance of ±0.06V on forward voltage measurements
2. Dynamic resistance is the inverse of the slope in linear forward voltage model for LEDs. See figure 14.
3. Measured between 25°C = T_J = 110°C at I_f = 1000 mA.
4. The forward voltage of the LUXEON K2 LED will reduce by up to 0.50V at 1000mA during the first few hours of operation
after SMT reflow. Due to this effect, Philips Lumileds recommends current source drive for consistent and reliable perform
ance. Cross connected series/parallel arrays or voltage drivers which could result in current hogging or variation in drive
current are not recommended. Please consult your Philips Lumileds authorized distributor or Philips Lumileds Sales
Representative for further information.
Typical Electrical Characteristics at 1500mA
Part Numbers LXK2 xxx4 xxx, Junction Temperature, T_J = 25ºC
Color
Cool White
Neutral White
Warm White
Green
Cyan
Blue
Royal Blue
Table 7.
Typical Forward Voltage V_f ^[1]
(V)
3.85
3.85
3.85
3.85
3.85
3.85
3.85
Notes for Table 7:
1. Philips Lumileds maintains a tolerance of +/ 0.06V on forward voltage measurements.
LUXEON K2 Datasheet DS51 (7/07)
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