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SC4538EVB Datasheet(PDF) 5 Page - Semtech Corporation

No. de pieza SC4538EVB
Descripción Electrónicos  High Effi ciency Boost Converter for up to 10 LEDs
PDF  14 Pages
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Fabricante Electrónico  SEMTECH [Semtech Corporation]
Página de inicio  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC4538EVB Datasheet(HTML) 5 Page - Semtech Corporation

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Typical Characteristics
All data taken with V
OUT
= 20V, R
ISET
= 5.76kΩ, V
IN
= 3.6V, and efficiency (η) = P
LED
/P
IN
unless otherwise noted.
Efficiency vs. I
BL
0
20
40
60
80
100
0.0
6.0
12.0
18.0
24.0
30.0
5.5VIN
3.6VIN
2.8VIN
Efficiency vs. Input Voltage
Normalized I
BL vs. Output Voltage
-6.0
-4.0
-2.0
0.0
2.0
4.0
6.0
0.0
8.0
16.0
24.0
32.0
40.0
Efficiency vs. Input Voltage
70
74
78
82
86
90
2.8
3.3
3.9
4.4
5.0
5.5
10mA
20mA
30mA
Efficiency vs. Output Voltage
I
BL
(mA)
V
IN
(V)
V
OUT
(V)
70
74
78
82
86
90
0.0
8.0
16.0
24.0
32.0
40.0
3.6VIN
5.5VIN
2.8VIN
V
OUT
(V)
70
74
78
82
86
90
2.8
3.3
3.9
4.4
5.0
5.5
VOUT Efficiency
LED Efficiency
V
IN
(V)
70
74
78
82
86
90
2.8
3.3
3.9
4.4
5.0
5.5
10 LED
6 LED
4 LED
V
IN
(V)
Efficiency vs. Input Voltage
SC4538



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