3728L1 データシートの表示（PDF） - Linear Technology
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3728L1 Datasheet PDF : 32 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LTC3728L-1
Supply Current vs Input Voltage
and Mode (Figure 13)
1000
800
600
BOTH
CONTROLLERS ON
400
200
0
0
SHUTDOWN
5 10 15 20
INPUT VOLTAGE (V)
25 30
3728L1 G04
Internal 5V LDO Line Regulation
5.1
ILOAD = 1mA
5.0
4.9
4.8
4.7
4.6
4.5
4.4
0
5 10 15 20 25 30
INPUT VOLTAGE (V)
3728L1 G07
Maximum Current Sense Threshold
vs VRUN/SS (Soft-Start)
80
VSENSE(CM) = 1.6V
60
40
20
0
01
2
3
4
5
6
VRUN/SS (V)
3728L1 G10
EXTVCC Voltage Drop
200
150
100
50
0
0
10
20
30
40
CURRENT (mA)
3728L1 G05
Maximum Current Sense Threshold
vs Duty Factor
75
50
25
0
0
20
40
60
80
100
DUTY FACTOR (%)
3728L1 G08
Maximum Current Sense Threshold
vs Sense Common Mode Voltage
80
76
72
68
64
60
0
1
2
3
4
5
COMMON MODE VOLTAGE (V)
3728L1 G11
INTVCC and EXTVCC Switch
Voltage vs Temperature
5.05
INTVCC VOLTAGE
5.00
4.95
4.90
4.85
4.80
EXTVCC SWITCHOVER THRESHOLD
4.75
4.70
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
3728L1 G06
Maximum Current Sense Threshold
vs Percent of Nominal Output
Voltage (Foldback)
80
70
60
50
40
30
20
10
0
0
25
50
75
100
PERCENT ON NOMINAL OUTPUT VOLTAGE (%)
3728L1 G09
Current Sense Threshold
vs ITH Voltage
90
80
70
60
50
40
30
20
10
0
–10
–20
–30
0
0.5
1
1.5
VITH (V)
2
2.5
3728L1 G12
3728l1fc
5
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