Datasheet

LT3743
6
3743fd
TYPICAL PERFORMANCE CHARACTERISTICS
V
CC_INT
Load Reg at 12V Regulated Current vs V
FB
Open-LED Threshold
Open-LED Timeout Regulated Sense Voltage Common Mode Lockout
Internal UVLO CBOOT-SW UVLO Voltage V
CC_INT
UVLO
TEMPERATURE (°C)
–50
V
IN
(V)
4.0
4.5
5.0
90
3743 G10
3.5
3.0
–15
20
55
125
TEMPERATURE (°C)
–50
1.50
VOLTAGE (V)
1.75
2.00
2.25
2.50
2.75
3.00
–15 20 55 90
3743 G11
125
TEMPERATURE (°C)
–50
2.50
UVLO (V)
2.75
3.00
3.25
3.50
3.75
4.00
–15 20 55 90
3743 G12
125
I
LOAD
(mA)
0
V
CC_INT
(V)
5.2
5.6
6.0
40
3743 G13
4.8
4.4
4.0
10
20
30
6050
V
FB
(mV)
800
–150
REGULATED CURRENT (%)
–100
–50
0
50
100
150
900 1000 1100 1200
3743 G14
1300
TEMPERATURE (°C)
–50
OPEN-LED THRESHOLD (V)
1.3
1.4
1.5
90
3743 G15
1.2
1.1
1.0
–15
20
55
125
TEMPERATURE (°C)
–50
OPEN-LED TIMEOUT (µs)
15
17
19
90
3743 G16
13
11
9
–15
20
55
125
V
CTRL
(V)
0
0
V
SENSE
+
– V
SENSE
–
(mV)
10
20
30
40
50
60
0.5 1.0 1.5
3743 G17
2.0
TEMPERATURE (°C)
–50
CM LOCKOUT (V)
1.5
2.0
2.5
90
3743 G18
1.0
0.5
0
–15
20
55
125
V
IN
= 6V
V
IN
= 36V
MEASURED V
IN
– V
OUT