STLED25 Datasheet, PDF (13/30 Pages) STMicroelectronics – 5 channels step-up white LED driver

STLED25
Typical application performance
5.7
Absolute channel accuracy
Figure 10. Absolute channel accuracy - set string current to 20 mA
2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 5.7 5.9
5
4
3
2
1
0
-1
-2
-3
-4
-5
V_IN [V]
AM09928v1
-30°C-ID1
-30°C-ID2
-30°C-ID3
-30°C-ID4
-30°C-ID5
25°C-ID1
25°C-ID2
25°C-ID3
25°C-ID4
25°C-ID5
85°C-ID1
85°C-ID2
85°C-ID3
85°C-ID4
85°C-ID5
5.8
Current matching between LED strings
Figure 11. Current matching - set string current to 20 mA
2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 5.7 5.9
4
3
2
1
0
-1
-2
-3
-4
V_IN [V]
AM09929v1
-30°C-ID1
-30°C-ID2
-30°C-ID3
-30°C-ID4
-30°C-ID5
25°C-ID1
25°C-ID2
25°C-ID3
25°C-ID4
25°C-ID5
85°C-ID1
85°C-ID2
85°C-ID3
85°C-ID4
85°C-ID5
Doc ID 022323 Rev 3
13/30