LT3755 Просмотр технического описания (PDF) - Linear Technology
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LT3755 Datasheet PDF : 26 Pages
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LT3755/LT3755-1/LT3755-2
Typical Performance Characteristics TA = 25°C, unless otherwise noted.
Quiescent Current vs VIN
2.0
PWM = 0V
1.5
1.0
0.5
SENSE Current Limit Threshold
vs Temperature
110
105
100
95
SHDN/UVLO Threshold
vs Temperature
1.28
1.26
SHDN/UVLO RISING
1.24
1.22
SHDN/UVLO FALLING
1.20
0
0
10
20
30
40
VIN (V)
37551 G10
INTVCC Voltage vs VIN
8
90
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
37551 G11
INTVCC Current Limit
vs Temperature
40
1.18
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
37551 G12
INTVCC Voltage vs Temperature
7.4
38
6
7.3
36
4
7.2
34
2
7.1
32
0
0
10
20
30
40
VIN (V)
37551 G13
SENSE Current Limit Threshold
vs Duty Cycle
115
110
105
100
30
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
37551 G14
V(ISP-ISN) Threshold vs FB Voltage
125
VCTRL = 2V
100
75
50
25
7.0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
37551 G15
Gate Rise/Fall Time
vs Capacitance
100
10% TO 90%
80
GATE RISE
TIME
60
GATE
40
FALL TIME
20
95
0
25
50
75
DUTY CYCLE (%)
100
37551 G16
0
1.2
1.22
1.24
1.26
1.28
FB VOLTAGE (V)
37551 G17
0
0
2
4
6
8
10
CAPACITANCE (nF)
37551 G18
37551fd
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