SC120ULTRT Просмотр технического описания (PDF) - Semtech Corporation
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SC120ULTRT Datasheet PDF : 32 Pages
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SC120
Typical Characteristics — V = 5.0V, Low V Range
OUT
IN
Efficiency vs. I (V = 5.0V)
OUT OUT
R1 = 931kΩ, R2 = 294kΩ, L = 3.3μH, CFB = 10pF, TA = 25οC
100
90
V = 1.6V
IN
80
70
V = 1.2V
IN
60
V = 0.8V
IN
50
40
30
20
10
0
0.1 0.2
0.5 1
2
5
IOUT (mA)
10 20
50 100
Efficiency vs. I (V = 5.0V)
OUT OUT
R1 = 931kΩ, R2 = 294kΩ, L = 3.3μH, CFB = 10pF, VIN = 1.2V
100
90
T = 25°C
A
T = –40°C
A
80
70
60
50
T = –40°C
40
A
T = 85°C
A
30
20
10
0
0.1 0.2
0.5 1
2
5
IOUT (mA)
10 20
50 100
Load Regulation (V = 5.0V)
OUT
R1 = 931kΩ, R2 = 294kΩ, L = 3.3μH, CFB = 10pF, TA = 25οC
5.1
Load Regulation (VOUT = 5.0V)
R1 = 931kΩ, R2 = 294kΩ, L = 3.3μH, CFB = 10pF, VIN = 1.2V
5.1
T = 85°C
A
5.05
5.05
5
4.95
V = 0.8V
IN
4.9
0
20
V = 1.6V
IN
V = 1.2V
IN
40
60
80
IOUT (mA)
100
120
Line Regulation — PSAVE Mode (V = 5.0V)
OUT
R1 = 931kΩ, R2 = 294kΩ, L = 3.3μH, CFB = 10pF, IOUT = 1mA
5.1
5.05
T = 25°C
A
5
T = 85°C
A
TA = –40°C
4.95
4.9
0.6
0.8
1
1.2
1.4
1.6
1.8
VIN (V)
5
4.95
T = –40°C
A
4.9
0
20
T = –40°C
A
T = 85°C
A
T = 25°C
A
40
60
80
IOUT (mA)
100
120
Line Regulation — PWM Mode (V = 5.0V)
OUT
R1 = 931kΩ, R2 = 294kΩ, L = 3.3μH, CFB = 10pF, IOUT = 35mA
5.1
5.05
5
4.95
T = 25°C
A
T = 85°C
A
T = –40°C
A
4.9
0.6
0.8
1
1.2
1.4
1.6
1.8
VIN (V)
11
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