STCF05 Datasheet, PDF (28/33 Pages) STMicroelectronics – High power white LED driver with I²C interface

Typical performance characteristics
11 Typical performance characteristics
STCF05
Figure 14. Efficiency in flash mode
Figure 15. Efficiency in torch mode
95
V_OUT=7V
90
85
80
75
I_LED=400 mA
I_LED=160 mA
70
2.5
3
3.5
4
4.5
5
5.5
V_BAT [V]
95
90 ^{VOUT = 6.5 V}
85
80
75
I_LED=15mA
70
I_LED=120mA
65
60
55
50
2.5
3
3.5
4
4.5
5
5.5
V_BAT [V]
Figure 16. I_LED vs. V_BAT at different temp.
Figure 17. I_LED vs. V_OUT
440
-40
430
25
420
85
410
400
390
380
370
360
2.50
3.00
3.50
4.00
V_BAT [V]
4.50
5.00
5.50
460
455
450
445
440
VVB_BAA_T =T3=.36.V6V
435
430
4 5 6 7 8 9 10 11 12
VVO_OUU_T T[V][V]
Figure 18. Input current vs. input voltage
Figure 19. Quiescent current in ready mode
2.00
1.50
I_LED=400 mA
I_LED=160 mA
1.00
0.50
0.00
2.5
3
3.5
4
4.5
5
5.5
V_BAT [V]
6.00
5.50
5.00
4.50
4.00
3.50
3.00
Ready Mode
2.50
2.00
Ready Mode +
Aux LED
-40 -20 0 20 40 60 80 100
T [°C]
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Doc ID 15257 Rev 4