LT3743
TYPICAL PERFORMANCE CHARACTERISTICS
1.70
EN/UVLO Threshold (Falling)
10
EN/UVLO Pin Current
0.5
I Q in Shutdown
1.64
1.58
8
6
0.4
0.3
1.52
–50°C
130°C
4
0.2
130°C
1.46
1.40
6
12
18
24
30
36
2
0
6
12
18
24
30
25°C
130°C
–50°C
36
0.1
0
0
8
16
25°C
24
32
40
2.0
V IN (V)
3743 G01
Quiescent Current (Non-Switching)
2.02
V IN (V)
V REF Pin Voltage
3743 G02
1.6
V IN (V)
V REF Current Limit
3743 G03
1.6
2.01
1.4
T A = 25°C
1.2
0.8
2.00
1.99
V IN = 36V
V IN = 6V
1.2
T A = 130°C
T A = –50°C
0.4
0
6
12
18
24
T A = 25°C
T A = 130°C
T A = –50°C
30
36
1.98
1.97
–50
–15
20
55
90
125
1.0
0.8
6
12
18
24
30
36
1.5
1.2
V IN (V)
Oscillator Frequency
1.2MHz
3743 G04
90
80
TEMPERATURE (°C)
RT Pin Current Limit
3743 G05
7
6
V IN (V)
Soft-Start Pin Current
3743 G06
0.9
900kHz
70
V IN = 36V
0.6
60
5
V IN = 6V
0.3
220kHz
50
4
0
–50
–15
20
55
90
125
40
–50
–15
20
55
90
125
3
–50
–15
20
55
90
125
TEMPERATURE (°C)
3743 G07
TEMPERATURE (°C)
3743 G08
TEMPERATURE (°C)
3743 G09
3743fd
5
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