NCP5008_06 ONSEMI [ON Semiconductor], NCP5008_06 Datasheet - Page 7

• Manufacturer Part Number: NCP5008_06
• Description: Backlight LED Boost Driver
• Manufacturer: ONSEMI [ON Semiconductor]

Figure 11. Inductor Peak Current vs. I
200
180
160
140
120
100
80
60
40
20
80
75
70
65
60
55
50
50
45
40
35
30
25
20
15
10
0
5
0
0
0
Figure 13. Efficiency vs. Load Current @ 4 LEDS
0
Measured
10
5
@ V
Figure 9. Load Current (I
bat
10
Condition: Typical Application: L = 22 mH, Cin = 10 mF, Cout = 2.2 mF, R1 = 30 kW
Theoretical
10
(V
20
= 3.6 V, V
load
= 4*Vf ⇒ 14.2 V)
15
30
I
I
photo
LED
I
ref
load
20
(mA)
(mA)
V
(mA)
TYPICAL OPERATING CHARACTERISTICS
bat
20
= 15 V and 10 V
40
= 3.0 V
V
V
load
load
led
photo
25
) vs. I
50
= 10 V
= 15 V
30
V
V
@ I
bat
NCP5008, NCP5009
bat
ref
30
= 4.2 V
http://onsemi.com
ref
= 3.6 V
60
= 34 mA
40
35
70
7
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
20
18
16
14
12
10
85
80
75
70
65
60
55
50
8
6
4
2
0
2.4
0
0
Figure 14. Efficiency vs. Load Current @ 3 LEDS
Figure 12. Stand by Current vs. V
Figure 10. Inductor Peak Current Error vs.
2.8
50
5
Theoretical Inductor Peak Current
3.2
100
THEORETICAL I
10
(V
3.6
load
150
= 3*Vf ⇒ 10.5 V)
4.0
15
V
I
bat
LED
200
(V)
(mA)
4.4
peak
20
250
4.8
(mA)
bat
25
V
300
bat
5.2
@ T = 20°C
V
V
= 3.0 V
bat
bat
30
350
5.6
= 4.2 V
= 3.6 V
400
6.0
35