DS46 Datasheet, PDF (6/15 Pages) Lumileds Lighting Company – power light source LUXEON® III Star

Electrical Characteristics at 700mA, Junction Temperature, T_J = 25ºC
Color
White
Green
Cyan
Blue
Royal Blue
Table 8.
Forward Voltage V_F ^[1]
(V)
Min.
Typ.
Max.
3.03
3.70
4.47
3.03
3.70
4.47
3.03
3.70
4.47
3.03
3.70
4.47
3.03
3.70
4.47
Dynamic
Resistance^[2]
(Ω) R_D
0.8
0.8
0.8
0.8
0.8
Temperature
Coefficient of
Forward
Voltage^[3]
(mV/^oC)
∆V_F / ∆T_J
2.0
2.0
2.0
2.0
2.0
Thermal
Resistance,
Junction
to Board
(^oC/W) Rθ_{J B}
17
17
17
17
17
Notes for Table 8:
1.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 Figures 3a and 3b.
3.Measured between 25^oC ≤ T_J ≤ 110^oC at I_F = 700mA.
Electrical Characteristics at 1000mA, Junction Temperature, TJ = 25ºC
Color
White
Green
Cyan
Blue
Royal Blue
Table 9.
Typical Forward Voltage
V_F (V)^[1]
1000 mA
3.90
3.90
3.90
3.90
3.90
Notes for Table 9:
1.Proper current derating must be observed to maintain junction temperature below the maximum. For more
information, consult the LUXEON Design Guide, available upon request.
2.Allowable board temperature to avoid exceeding maximum junction temperature at maximum Vf limit at 700 mA based on
thermal resistance of Star assembly.
3.LEDs are not designed to be driven in reverse bias. Please consult Lumileds' Application Brief AB11 for further information.
LUXEON III Star DS46 (3/06)
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