SC120(2009) Просмотр технического описания (PDF) - Semtech Corporation
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производитель
SC120 Datasheet PDF : 21 Pages
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SC120
Typical Characteristics (continued)
Line Regulation — PSAVE Mode (VOUT = 1.8V)
R1 = 499kΩ, R2 = 1MΩ, L = 4.7μH, IOUT = 4mA
1.85
1.84
Line Regulation — PWM Mode (V = 1.8V)
OUT
R1 = 499kΩ, R2 = 1MΩ, L = 4.7μH, IOUT = 45mA
1.85
1.84
1.83
T = –40°C
A
T = 25°C
A
1.82
1.81
T = 85°C
A
1.83
1.82
1.81
T = –40°C
A
1.8
1.8
T = 85°C
A
1.79
1.79
T = 25°C
1.78
1.77
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
1.5
L VIN (V)
IA Line Regulation — PSAVE Mode (V = 3.3V)
OUT
FB grounded, L = 4.7μH, IOUT = 4mA
3.34
T T = 85°C
A
3.32
N 3.3
T = –40°C
A
E 3.28
3.26
T = 25°C
A
ID 3.24
F 3.22
N 3.2
0.5 0.75 1
1.25 1.5 1.75 2
VIN (V)
2.25 2.5 2.75 3
CO Line Regulation — PSAVE Mode (VOUT = 4.0V)
A
1.78
1.77
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
1.5
VIN (V)
Line Regulation — PWM Mode (V = 3.3V)
OUT
FB grounded, L = 4.7μH, IOUT = 75mA
3.34
3.32
3.3
3.28
T = –40°C
A
3.26
T = 25°C
A
3.24
T = 85°C
A
3.22
3.2
0.5 0.75 1
1.25 1.5 1.75 2
VIN (V)
2.25 2.5 2.75 3
Line Regulation — PWM Mode (V = 4.0V)
OUT
R1 = 1.37MΩ, R2 = 590kΩ, L = 4.7μH, IOUT = 4mA
4.05
R1 = 1.37MΩ, R2 = 590kΩ, L = 4.7μH, IOUT = 75mA
4.05
T = 85°C
A
4
4
TA = –40°C
T = 25°C
A
T = –40°C
3.95
3.95 A
3.9
3.9
T = 85°C
A
T = 25°C
A
3.85
0.5
1
1.5
2
2.5
3
VIN (V)
3.5
4
3.85
0.5
1
1.5
2
2.5
3
VIN (V)
3.5
4
PRELIMINARY
7
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