Typical Characteristics
100
90
300
280
80
70
60
50
40
30
20
10
V F = 3.3V
I OUT = 15mA
260
240
220
200
180
160
140
120
25°C
85°C
-40°C
0
3.00
3.50
4.00
4.50
5.00
5.50
100
2.50
3.00
3.50
4.00
4.50
5.00
5.50
60
V IN [V]
Figure 5. Efficiency at 25 ? C
V IN [V]
Figure 6. Active Mode Supply Current (LED+ = ON)
25
50
40
30
20
10
-40°C
25°C
85°C
20
15
10
5
-40°C
25°C
85°C
0
2.50
3.00
3.50
4.00
4.50
5.00
5.50
0
0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10
22
20
18
16
14
12
10
8
6
4
2
0
V IN [V]
Figure 7. Quiescent Current (I LED = 0 mA)
V IN - V OUT [V]
Figure 8. Output Current vs. Headroom Voltage
0
100
200
300
400
500
R SET [k W ]
Figure 9. Output Current vs. R SET at 25 ? C
? 2009 Fairchild Semiconductor Corporation
FAN5646 ? Rev. 1.0. 3
5
www.fairchildsemi.com
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