LTC3728LIGN-1 查看數據表（PDF） - Linear Technology
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LTC3728LIGN-1 Datasheet PDF : 32 Pages
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LTC3728L-1
TYPICAL PERFORMANCE CHARACTERISTICS
Load Regulation
0.0
–0.1
FCB = 0V
VIN = 15V
FIGURE 13
–0.2
–0.3
–0.4
0
1
2
3
4
5
LOAD CURRENT (A)
3728L1 G13
Maximum Current Sense
Threshold vs Temperature
80
78
76
74
72
70
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3728L1 G17
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
3728L1 G14
Dropout Voltage vs Output Current
(Figure 14)
4
VOUT = 5V
3
2
RSENSE = 0.015Ω
1
RSENSE = 0.010Ω
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
OUTPUT CURRENT (A)
3728L1 G18
SENSE Pins Total Source Current
100
50
0
–50
–100
0
2
4
6
VSENSE COMMON MODE VOLTAGE (V)
3728L1 G15
RUN/SS Current vs Temperature
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3728L1 G25
Soft-Start Up (Figure 13)
Load Step (Figure 13)
Load Step (Figure 13)
VOUT
5V/DIV
VRUN/SS
5V/DIV
IL
2A/DIV
VIN = 15V
VOUT = 5V
5ms/DIV
VOUT
200mV/DIV
IL
2A/DIV
3728L1 G19
VIN = 15V
20μs/DIV
VOUT = 5V
VPLLFLTR = 50V
LOAD STEP = 0A TO 3A
Burst Mode OPERATION
VOUT
200mV/DIV
IL
2A/DIV
3728L1 G20
VIN = 15V
20μs/DIV
VOUT = 5V
VPLLFLTR = 50V
LOAD STEP = 0A TO 3A
CONTINUOUS MODE
3728L1 G21
3728l1fc
6
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