STEVAL-ILL009V3
OSRAM OSTAR projection LED board
Data Brief
Features
Outstanding brightness and luminance due to pure surface emission and low Rth prepared for additional optics Dominant wavelength: 617 nm amber (red) Dominant wavelength Color 2: 525 nm true green Dominant wavelength color 3: 464 nm blue Viewing angle at 50 % IV : 120 (lambertian emitter) Light emitting surface: (typ.) 2.1 x 2.1 mm2 Technology: InGaAlP thinfilm amber (red) Technology color 2: ThinGaN true green Technology color 3: ThinGaN blue Luminance: 18*106 cd/m2 amber (red) Luminance color 2: 14*106 cd/m2 true green Luminance color 3: 3.5*106 cd/m2 blue Efficacy color 2: 86.0 lm/W true green Efficacy color 3: 17.0 lm/W blue ESD-withstand voltage: up to 2 kV acc. to JESD22-A114-B STEVAL-ILL009V3
Description
This board should be connected through the 30pin connector to the STEVAL-ILL009V1 control board to be able to show the light effect with the board. The OSTAR projection module, used as light source, has a maximum forward current of 700 mA. The NTC resistor is directly assembled on the OSTAR module. As the power of the module is above 10 W, the heatsink is used to keep the temperature in range. The biggest advantage of the OSTAR module is that red, green and blue LEDs are in the same package, very closely assembled and therefore the color effect is better than with three separate LEDs.
November 2007
Rev 1
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For further information contact your local STMicroelectronics sales office.
Board schematic
STEVAL-ILL009V3
1
Board schematic
Figure 1. Schematic
R2 R3
1.5 1.5
10 8 6 4 2
U_r = Us - Uf_red_max = 4 - 3,4 = 0.6V
I CC CONNECTOR1
R_diss = U/I = 06 / 0.7 = 0.85 => 0.75 Ohms R1 0 R2 = R3 = 1.5 Ohms R2 || R3 = 0.75 Ohms
9 7 5 3 1
R4 4k7 5V
4k7
R1 R1 G1a G1a G1b G1b B1 B1 R2 R2 G2a G2a G2b G2b B2 B2 NC NC GND GND NC Vo NC Vcc NC NC Vd Vd Vd Vd
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
NTC
1.263V for 72C
I CC
CONNECTOR2
R_ntc (72C) = 1588 Ohms
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STEVAL-ILL009V3
Revision history
2
Revision history
Table 1.
Date 20-Nov-2007
Document revision history
Revision 1 Initial release Changes
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STEVAL-ILL009V3
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