NCP5007
1200
400
3 LED
L = 22µH
= 10W
T = +25°C
A
R
1000
800
sense
350
300
2 LED
4 LED
5 LED
600
250
200
400
200
0
P
out
= f(V ) @ R
= 2.0 W
bat
sense
150
6
2
3
4
5
2
3
4
5
6
V
bat
(V)
V
bat
(V)
Test conditions: 5 LEDs in series, steady state operation
Figure 5. Maximum Output Power as a Function of
the Battery Supply Voltage
Figure 6. Typical Inductor Peak Current as a
Function of Vbat Voltage
120
100
2 LED
3 LED
80
60
40
20
0
4 LED
5 LED
2.5
3.0
3.5
4.0
(V)
4.5
5.0
5.5
V
bat
Test conditions: L = 22 mH, Rsense = 2.0 W, Tamb = +25°C
Figure 7. Maximum Output Current as a Function of Vbat
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