Datasheet

LT3791
6
3791fa
V
(ISP-ISN)
Threshold vs V
FB
ISMON Voltage vs Temperature ISMON Voltage vs V
(ISP-ISN)
V
(IVINP-IVINN)
Threshold
vs Temperature
V
(IVINP-IVINN)
Threshold vs V
FB
V
(IVINP-IVINN)
Threshold
vs V
IVINP
IVINMON Voltage vs Temperature
FB Regulation Voltage
vs Temperature
SHORTLED Threshold
vs Temperature
V
FB
(V)
1.17
0
V
(ISP-ISN)
(mV)
20
40
60
80
120
1.18
1.19 1.20 1.21
3791 G10
1.22 1.23
100
TEMPERATURE (°C)
–50
V
ISMON
(V)
1.00
1.02
150
3791 G11
0.98
0.96
0
50
100
–25
25
75
125
1.04
0.99
1.01
0.97
1.03
V
IN
= 12V
V
(ISP-ISN)
= 100mV
V
(ISP-ISN)
(mV)
0
V
ISMON
(V)
0.6
0.8
1.0
80
3791 G12
0.4
0.2
0.5
0.7
0.9
0.3
0.1
0
2010
4030
60 70 90
50
100
TEMPERATURE (°C)
–50
V
(IVINP
-
IVINN)
(mV)
50
52
54
25 50 75 100 125
3791 G13
48
46
–25 0 150
44
42
56
V
IVINP
= 60V
V
IVINP
= 3V
V
IVINP
(V)
0
V
(IVINP
-
IVINN)
(mV)
49.5
50.0
50.5
30
50
3791 G14
49.0
48.5
48.0
10 20 40
51.0
51.5
52.0
60
TEMPERATURE (°C)
–50
V
IVINMON
(V)
1.00
1.02
150
3791 G15
0.98
0.96
0
50
100
–25
25
75
125
1.04
0.99
1.01
0.97
1.03
V
IVINP
= 12V
V
(IVINP-VINN)
= 50mV
V
FB
(V)
1.17
0
V
(IVINP-IVINSN)
(mV)
10
20
30
40
60
1.18
1.19 1.20 1.21
3791 G16
1.22 1.23
50
TEMPERATURE (°C)
–50
V
FB
(V)
1.20
1.22
150
3791 G17
1.18
1.16
0
50
100
–25
25
75
125
1.24
1.19
1.21
1.17
1.23
V
IN
= 60V
V
IN
= 12V
V
IN
= 4.7V
TEMPERATURE (°C)
–50
FB VOLTAGE (V)
0.400
0.450
150
3791 G18
0.350
0.300
0
50
100
–25
25
75
125
0.500
0.375
0.425
0.325
0.475
RISING
FALLING
Typical perForMance characTerisTics
T
A
= 25°C, unless otherwise noted.