SC220EVB(2012) Ver la hoja de datos (PDF) - Semtech Corporation
Número de pieza
componentes Descripción
Fabricante
SC220EVB Datasheet PDF : 14 Pages
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Typical Characteristics
Efficiency vs. Load Current
V = 1.8V
100 % OUT
90 %
V = 3.7V
IN
V = 2.7V
IN
80 %
70 %
60 %
50 %
V = 4.2V
IN
40 %
30 %
20 %
10 %
0
0.001
0.01
0.1
1
Load Current (A)
Efficiency vs. Load Current
(Chip Inductor vs. X-EMITM Inductor)
V = 1.8V
OUT
100 %
90 %
VIN = 2.7V
V = 3.7V
IN
80 %
70 %
60 %
50 %
40 %
V = 4.2V
IN
30 %
20 %
10 %
0 0.001
Dashed Lines: Efficiency with X-EMITM Inductor
Solid Lines: Efficiency with chip Inductor
0.01
0.1
1
Load Current (A)
Switching Frequency vs. VIN
V = 1.8V
OUT
22.5
I = 200mA
20.0
OUT
17.5
15.0
12.5
10.0
I = 300mA
OUT
7.5
I = 450mA
OUT
5.0
2.5
0
2.5
I = 650mA
OUT
3.0
3.5
4.0
4.5
5.0
5.5
Input Voltage (V)
SC220
Efficiency vs. V
IN
V = 1.8V
OUT
100 %
I = 300mA
OUT
90 %
80 %
70 %
60 %
50 %
40 %
I = 1mA
OUT
I = 50mA
OUT
30 %
20 %
10 %
0
2.5
3.0
3.5
4.0
Input Voltage (V)
4.5
5.0
Load Regulation
Nominal V = 1.8V
OUT
1.80
V = 5.0V
IN
1.79
V = 4.2V
IN
1.78
V = 2.7V
IN
V = 3.7V
IN
1.77
0.001
0.01
0.1
1
Load Current (A)
Switching Frequency vs. V
IN
V = 1.0V
OUT
22.5
20.0
17.5
15.0
12.5
I = 650mA
OUT
I = 200mA
OUT
I = 300mA
OUT
I = 450mA
OUT
10.0
7.5
5.0
2.5
0
2.5 3.0
3.5
4.0
4.5
5.0
5.5
Input Voltage (V)
6
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