LT3591 Просмотр технического описания (PDF) - Linear Technology
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LT3591 Datasheet PDF : 16 Pages
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LT3591
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise specified.
Quiescent Current
(VCTRL = 3V)
6
5
25°C
125°C
4
– 50°C
3
2
1
0
0
3
6
9
12
VIN (V)
3591 G09
Open-Circuit Output Clamp
Voltage vs Temperature
45
44
43
42
41
40
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3591 G12
Maximum Duty Cycle
vs Temperature
100
98
96
94
92
90
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3591 G15
4
Current Limit vs Temperature
1000
800
600
400
200
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3591 G10
Input Current in Output Open
Circuit vs Temperature
8
VIN = 3V
7
6
5
4
3
2
1
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3591 G13
Sense Voltage (VCAP – VLED)
vs VCAP
208
204
25°C
200
125°C
196
– 50°C
192
188
5
10 15 20 25 30 35
VCAP (V)
3591 G16
Schottky Leakage Current
vs Temperature
15
VR = 10V
VR = 16V
12
VR = 20V
9
6
3
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3591 G11
Switching Frequency
vs Temperature
1200
1150
1100
1050
1000
950
900
850
800
750
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3591 G14
Sense Voltage (VCAP – VLED)
vs Temperature
208
204
200
196
192
188
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3591 G17
3591f
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