LTC1474CMS8 데이터 시트보기 (PDF) - Linear Technology
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LTC1474CMS8 Datasheet PDF : 20 Pages
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LTC1474/LTC1475
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs Input Voltage
100
FIGURE 1 CIRCUIT
L: CDRH73-101
95
90
ILOAD = 25mA
85
ILOAD = 200mA
80
ILOAD = 1mA
75
70
0
4
8
12
INPUT VOLTAGE (V)
16
1474/75 G01
Current Trip Threshold vs
Temperature
500
VIN = 10V
400
RSENSE = 0Ω
300
200
100
RSENSE = 1.1Ω
0
0
20
40
60
80
TEMPERATURE (°C)
1474/75 G04
Switch Leakage Current vs
Temperature
1.0
VIN = 18V
0.8
0.6
0.4
0.2
0
0
20
40
60
80 100
TEMPERATURE (°C)
1474/75 G07
Line Regulation
40
FIGURE 1 CIRCUIT
30 ILOAD = 100mA
20
RSENSE = 0Ω
10
RSENSE = 0.33Ω
0
–10
–20
0
4
8
12
INPUT VOLTAGE (V)
16
1474/75 G02
Switch Resistance vs
Input Voltage
5
4
3
2
T = 70°C
1
T = 25°C
0
0
5
10
15
20
INPUT VOLTAGE (V)
1474/75 G05
VIN DC Supply Current
120
ACTIVE MODE
100
80
60
40
20
0
0
SLEEP MODE
4
8
12
16
20
INPUT VOLTAGE (V)
1474/75 G08
Load Regulation
40
FIGURE 1 CIRCUIT
30
20
VIN = 15V
10
VIN = 10V
0
–10
VIN = 5V
–20
–30
0
50 100 150 200 250 300
LOAD CURRENT (mA)
1474/75 G03
Supply Current in Shutdown
10.0
7.5
5.0
2.5
0
0
5
10
15
20
INPUT VOLTAGE (V)
1474/75 G06
Off-Time vs Output Voltage
80
VIN = 10V
60
40
20
0
0
20
40
60
80 100
% OF REGULATED OUTPUT VOLTAGE (%)
1474/75 G09
4
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