NCP5008DMR2(2003) Ver la hoja de datos (PDF) - ON Semiconductor
Número de pieza
componentes Descripción
Fabricante
NCP5008DMR2 Datasheet PDF : 20 Pages
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NCP5008, NCP5009
TYPICAL OPERATING CHARACTERISTICS
Condition: Typical Application: L = 22 mH, Cin = 10 mF, Cout = 2.2 mF, R1 = 30 kW
80
80
Vbat = 4.2 V
75
75
Vbat = 4.2 V
Vbat = 3.6 V
70
70
65
Vbat = 3.6 V
65
60
60
55
Vbat = 3.0 V
50
0
5
10
15
20
25
30
35
ILED (mA)
Figure 3. Efficiency vs. Load Current @ 4 LEDS
(Vload = 4*Vf ⇒ 14.2 V)
85
Vbat = 4.2 V
80
Vbat = 3.6 V
75
Vbat = 3.0 V
70
55
Vbat = 3.0 V
50
0
5
10
15
20
25
30
35
ILED (mA)
Figure 4. Efficiency vs. Load Current @ 3 LEDS
(Vload = 3*Vf ⇒ 10.5 V)
100
90
Vout =7.5 V
Iled = 40 mA
80
Vout = 15 V
70
Iled = 20 mA
65
60
60
0
5
10 15
20 25
30 35
ILED (mA)
Figure 5. Efficiency vs. Load Current @ 2 LEDS
(Vload = 2*Vf ⇒ 7.1 V)
100
Vbat = 6.0 V
95
5.0 V
90
4.2 V
85
80
3.6 V
3.0 V
75
0
10
20
30
40
50
60
70
ILED (mA)
Figure 7. Efficiency vs. Load Current @ 4 LEDS
(Vload = 2 strings of 2 LEDs in series = 7.1V)
50
2.5
400
350
300
250
200
150
100
50
0
0
3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
Vbat (V)
Figure 6. Efficiency vs. Vbat @
Vout = 15 V/Iled = 20mA and
Vout = 7.5 V/Iled = 40 mA
Bn
7
6
5
4
3
2
1
20
40
60
80
Iref (mA)
Figure 8. Inductor peak Current vs.
Iref @ Bn = {1, 2, 3, 4, 5, 6, 7}
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