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LT3591
TYPICAL PERFORMANCE CHARACTERISTICS
Quiescent Current
T A = 25°C, unless otherwise speci?ed.
Schottky Leakage Current
(V CTRL = 3V)
Current Limit vs Temperature
vs Temperature
6
1000
15
V R = 10V
5
125 ° C
25 ° C
800
12
V R = 16V
V R = 20V
4
3
2
1
– 50 ° C
600
400
200
9
6
3
0
0
3
6
9
12
0
–50
–25
0 25 50
75
100
125
0
–50 –25
0
25
50
75
100
125
V IN (V)
Open-Circuit Output Clamp
Voltage vs Temperature
3591 G09
TEMPERATURE ( ° C)
Input Current in Output Open
Circuit vs Temperature
3591 G10
TEMPERATURE ( ° C)
Switching Frequency
vs Temperature
3591 G11
45
44
43
8
7
6
5
V IN = 3V
1200
1150
1100
1050
1000
4
42
41
3
2
1
950
900
850
800
40
–50
–25
0
25
50
75
100
125
0
–50 –25
0
25
50
75
100
125
750
–50 –25
0
25
50
75
100
125
100
98
TEMPERATURE ( ° C)
Maximum Duty Cycle
vs Temperature
3591 G12
208
204
TEMPERATURE ( ° C)
Sense Voltage (V CAP – V LED )
vs V CAP
3591 G13
208
204
TEMPERATURE ( ° C)
Sense Voltage (V CAP – V LED )
vs Temperature
3591 G14
96
200
25 ° C
200
125 ° C
94
92
196
192
– 50 ° C
196
192
90
–50 –25
0
25
50
75
100
125
188
5
10
15
20
25
30
35
188
–50
–25
0
25
50
75
100
125
TEMPERATURE ( ° C)
3591 G15
V CAP (V)
3591 G16
TEMPERATURE ( ° C)
3591 G17
3591f
4
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