Datasheet

LT3746
10
3746fa
For more information www.linear.com/3746
Typical perForMance characTerisTics
LED Current I
LED
vs LED Voltage
V
LED
LED Current Variation I
LED
vs
Temperature Short LED Threshold vs V
ISN
T
SET
Current vs I
SET
Current T
SET
Threshold vs Temperature
LED Current Derating vs
Temperature
V
ISET
Pin Voltage vs Temperature
Nominal LED Current vs R
ISET
LED Current I
LED
vs
Dot Correction
–50
1.200
V
ISET
(V)
1.202
1.210
1.208
1.206
1.204
–25 0 25 50 75 100 125
JUNCTION TEMPERATURE (°C)
3746 G28
4
0
I
LED
(mA)
5
30
25
20
15
10
10
16 22 28 34 40 46 52 58 64
DOT CORRECTION +1
3746 G30
–50
17
I
LED
(mA)
23
22
21
20
19
18
–25 0 25 50 75 100 125
JUNCTION TEMPERATURE (°C)
3746 G32
0
0
I
TSET
(µA)
20
12
16
8
4
4 8 12 16 20
I
ISET
(µA)
3746 G34
–50
350
450
400
V
TSET
(mV)
700
600
650
550
500
–25 0 25 50 12575 100
JUNCTION TEMPERATURE (°C)
3746 G35
0
0
V
LED
(V)
12
9
6
3
4 8 12 16
V
ISN
(V)
3746 G33
0
0
I
LED
(mA)
5
35
30
25
20
15
10
0.5 1.0 1.5 2.0 2.5 3.0
V
LED
(V)
3746 G31
DC = 0×3F
DC = 0×20
DC = 0×00
80
0
10
5
I
LED
(mA)
35
25
30
20
15
85 90 95 100 120105 110 115
JUNCTION TEMPERATURE (°C)
3746 G36
OT = 0
OT = 1
40 80
0
I
LED
(mA)
4
20
16
12
8
120 160 200 240 280 320
R
ISET
(kΩ)
3746 G29
T
A
= 25°C, unless otherwise noted.