STCF03 Datasheet, PDF (27/35 Pages) STMicroelectronics – High power white LED driver with I2C™ interface

Typical performance characteristics
10 Typical performance characteristics
STCF03
Figure 14. Efficiency
Efficiency of the application at Io=800mA
100
Efficiency of the application at Io=55mA
90
80
70
60
50
40
30
20
10
0
2
2.5
3
3.5
4
4.5
5
5.5
V_I [V]
Figure 15. I_OTORCH vs T_DIMM
V_I= 2.7V
V_I= 3.6V
V_I=5.5V
250
200
150
100
50
0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
step
6
Figure 16. I_OFLASH vs F_DIMM
Figure 17. I_OAUX vs AUXI
V_I 3.3V
V_I 5.5V
900
800
700
600
500
400
300
200
100
0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
step
25
20
15
10
5
0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Step
Figure 18. I_OFLASH vs Temp. V_I = 3.3V
Figure 19. VFB2 vs Temp. at I_O = 800mA,
V_I = 3.3V
900
800
700
600
500
400
300
200
100
0
-40°C
25°C
temp.
80°C
260
240
220
200
180
160
140
120
100
-40°C
25°C
temp.
80°C
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