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FAN5341 Folha de dados(PDF) 6 Page - Fairchild Semiconductor

Nome de Peças FAN5341
Descrição Electrónicos  Series Boost LED Driver with Integrated Schottky Diode and Single-Wire Digital Interface
Download  11 Pages
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Fabricante Electrônico  FAIRCHILD [Fairchild Semiconductor]
Página de início  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN5341 Folha de dados(HTML) 6 Page - Fairchild Semiconductor

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© 2009 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN5341 • Rev. 1.0.0
6
Electrical Specifications
Figure 4. 5 LEDs: Efficiency vs. LED Current
vs. Input Voltage
Figure 5. 5 LEDs: Efficiency vs. LED Current
vs. Input Voltage
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
2.7
3
3.3
3.6
3.9
4.2
Input Voltage (V)
-40°C
+25°C
+85°C
Figure 6. 4 LEDs: Efficiency vs. LED Current
vs. Input Voltage
Figure 7. Delta of VFB Over Input Voltage and
Temperature for 4 LEDs with L=10µH and
COUT=1.0µF at ILED=25mA
Figure 8. 3 LEDs: Efficiency vs. LED Current
vs. Input Voltage
Figure 9. Over-Voltage Protection vs. Input Voltage
17.0
17.5
18.0
18.5
19.0
19.5
20.0
2.7
3
3.3
3.6
3.9
4.2
Input Voltage (V)
4 LEDs
L = 10µH
COUT = 1.0µF
ILED = 25mA
50
60
70
80
90
5
10152025
LED Current (mA)
VIN=2.8V
VIN=3.6V
VIN=4.2V
3 LEDs
L = 10µH
COUT = 1.0µF
ILED = 25mA
50
60
70
80
90
510
15
20
25
LED Current (mA)
VIN=2.7V
VIN=3.6V
VIN=4.2V
4 LEDs
L = 10µH
COUT = 1.0µF
ILED = 25mA
50
60
70
80
90
510
15
20
25
LED Current (mA)
VIN=2.8V
VIN=3.6V
VIN=4.2V
5 LEDs
L = 4.7µH
COUT = 1.0µF
ILED = 25mA
50
60
70
80
90
5
1015
2025
LED Current (mA)
VIN=2.7V
VIN=3.6V
VIN=4.2V
5 LEDs
L = 10µH
COUT = 1.0µF
ILED = 25mA


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