LTC1709 Ver la hoja de datos (PDF) - Linear Technology
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LTC1709
Linear Technology
LTC1709 Datasheet PDF : 28 Pages
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LTC1709
TYPICAL PERFOR A CE CHARACTERISTICS
Load Regulation
0.0
–0.1
FCB = 0V
VIN = 15V
FIGURE 1
–0.2
–0.3
–0.4
0
1
2
3
4
5
LOAD CURRENT (A)
1709 G13
Maximum Current Sense
Threshold vs Temperature
80
78
76
74
72
70
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1709 G17
Load Step Response Using Active
Voltage Positioning (Figure 12)
VOUT
50mV/DIV
IOUT
10A/DIV
0A
20A
20µs/DIV
1709 G20
VITH vs VRUN/SS
2.5
VOSENSE = 0.7V
2.0
1.5
1.0
0.5
0
012
3
4
VRUN/SS (V)
56
1709 G14
SENSE Pins Total Source Current
100
50
0
–50
–100
0
2
4
6
VSENSE COMMON MODE VOLTAGE (V)
1709 G15
RUN/SS Current vs Temperature
1.8
Soft-Start Up (Figure 12)
1.6
VITH
1V/DIV
1.4
1.2
VOUT
1.0
2V/DIV
0.8
VRUNSS
2V/DIV
0.6
0.4
0.2
100ms/DIV
1629 G19
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1709 G18
Current Sense Pin Input Current
vs Temperature
35
EXTVCC = 5V
33
EXTVCC Switch Resistance
vs Temperature
10
8
31
6
29
4
27
2
25
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1709 G21
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1709 G22
6
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