Datasheet

0
10
20
30
40
50
60
70
80
90
100
1 10 100 1000
Load-mA
Efficiency-%
V =8V
I
V =5V
I
V =3.6V
I
5LEDs=14.5V
V =2.7V
I
1 10 100 1000
Load-mA
0
10
20
30
40
50
60
70
80
90
100
Efficiency-%
V =5V
I
V =3.6V
I
V =2.7V
I
4LEDs=11.5V
1 10 100 1000
Load-mA
0
10
20
30
40
50
60
70
80
90
100
Efficiency-%
V =5V
I
V =3.6V
I
V =2.7V
I
3LEDs=8.5V
198.5
199
199.5
200
200.5
2.5 3 3.5 4 4.5 5 5.5 6
V -InputVoltage-V
I
VFB-mV
TPS61166
www.ti.com .......................................................................................................................................................................................... SLVS991 – SEPTEMBER 2009
LED EFFICIENCY LED EFFICIENCY
vs vs
LED CURRENT LED CURRENT
Figure 3. Figure 4.
LED EFFICIENCY FB VOLTAGE
vs vs
LED CURRENT INPUT VOLTAGE
Figure 5. Figure 6.
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