LTC1708EG-PG 查看數據表（PDF） - Linear Technology
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LTC1708EG-PG
Linear Technology
LTC1708EG-PG Datasheet PDF : 32 Pages
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TYPICAL PERFOR A CE CHARACTERISTICS
LTC1708-PG
Supply Current vs Input Voltage
and Mode (Figure 13)
1000
800
BOTH
CONTROLLERS ON
600
400
200
0
0
STANDBY
SHUTDOWN
5 10 15 20 25
INPUT VOLTAGE (V)
30 35
1708 G04
Internal 5V LDO Line Reg
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 35
INPUT VOLTAGE (V)
1708 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)
1708 G10
EXTVCC Voltage Drop
250
200
150
100
50
0
0
10
20
30
40
50
CURRENT (mA)
1708 G05
Maximum Current Sense Threshold
vs Duty Factor
75
50
25
0
0
20
40
60
80
100
DUTY FACTOR (%)
1708 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)
1708 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)
1708 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 (%)
1708 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
2
2.5
VITH (V)
1708 G12
1708f
5
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