SC120(2009) Просмотр технического описания (PDF) - Semtech Corporation
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SC120 Datasheet PDF : 21 Pages
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SC120
Typical Characteristics
Efficiency vs. I (V = 1.8V)
OUT OUT
R1 = 499kΩ, R2 = 1MΩ, L = 4.7μH, TA = 25οC
100
90
V = 1.5V
IN
Efficiency vs. I (V = 1.8V)
OUT OUT
R1 = 499kΩ, R2 = 1MΩ, L = 4.7μH, VIN = 1.1V
100
T = –40°C
90
A
80
80
70
70
60
V = 1.1V
IN
60
V = 0.7V
IN
50
50
TA = 85°C
40
40
T = 25°C
A
30
30
20
20
10
0
L 0.1 0.2 0.5 1 2
5 10 20
IOUT (mA)
50 100 200 500
IA Efficiency vs. IOUT (VOUT = 3.3V)
FB grounded, L = 4.7μH, TA = 25οC
100
T V = 3.0V
IN
90
80
N 70
V = 1.0V
IN
E 60
50
V = 2.0V
IN
ID 40
30
F 20
10
N 0
0.1 0.2 0.5 1 2
5 10 20
IOUT (mA)
50 100 200 500
CO Efficiency vs. I (V = 4.0V)
10
0
0.1 0.2 0.5 1 2
5 10 20
IOUT (mA)
50 100 200
Efficiency vs. I (V = 3.3V)
OUT OUT
FB grounded, L = 4.7μH, VIN = 1.5V
100
90
T = –40°C
A
80
70
60
T = 85°C
A
50
40
30
T = 25°C
A
20
10
0
0.1 0.2 0.5 1 2
5 10 20
IOUT (mA)
50 100 200
Efficiency vs. I (V = 4.0V)
500
500
OUT OUT
OUT OUT
R1 = 1.37MΩ, R2 = 590kΩ, L = 4.7μH, TA = 25οC
100
V = 3.0V
IN
90
R1 = 1.37MΩ, R2 = 590kΩ, L = 4.7μH, VIN = 2.4V
100
90
T = –40°C
A
80
80
70
V = 1.0V
70
IN
60
V = 2.0V
60
IN
50
50
T = 25°C
A
T = 85°C
A
40
40
30
30
20
20
10
10
0
0.1 0.2 0.5 1 2
5 10 20
IOUT (mA)
50 100 200 500
0
0.1 0.2 0.5 1 2
5 10 20
IOUT (mA)
50 100 200 500
PRELIMINARY
5
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