SC197ULTRT 데이터 시트보기 (PDF) - Semtech Corporation
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SC197ULTRT Datasheet PDF : 20 Pages
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SC197
Typical Characteristics (continued)
VIN = 4.0V for VOUT = 3.3V, VIN = 3.6V for all others. CIN = 4.7µF, COUT = 10µF, LX = 1µH, TA = 25°C unless otherwise noted.
Frequency vs. Temperature
IOUT = 300mA
4.0
3.8
Efficiency vs. VIN (VOUT =1.8V)
IOUT = 200mA
90
89
-40°C
88
25°C
3.6
87
3.3V
2.8V
86
85°C
1.8V
85
3.4
0.8V
84
3.2
3.0
-50
-30
-10
10
30
50
70
90
Temperature (°C)
83
82
81
2.5
3
3.5
4
4.5
VIN (V)
5
5.5
Load Regulation (VOUT = 1.8V)
VIN = 3.6V
1.86
Line Regulation (VOUT =1.8V)
IOUT = 200mA
1.86
1.84
1.84
1.82
1.80
1.78
1.76
0
85°C
25°C
-40°C
100
200
300
400
500
Load Current (mA)
1.82
25°C
-40°C
1.80
85°C
1.78
1.76
2.5
3
3.5
4
4.5
5
5.5
VIN (V)
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