LT3758AMPMSE-PBF View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT3758AMPMSE-PBF Datasheet PDF : 36 Pages
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LT3758/LT3758A
Typical Performance Characteristics TA = 25°C, unless otherwise noted.
INTVCC vs Temperature
7.4
7.3
7.2
7.1
7.0
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3758 G13
INTVCC Minimum Output
Current vs VIN
45
TJ = 150°C
40
35
30
25
INTVCC = 4.7V
20
15
10
INTVCC = 6V
5
0
1
10
VIN (V)
100
3758 G14
INTVCC Load Regulation
7.3
VIN = 8V
7.2
7.1
7
6.9
6.8
0
5
10
15
20
25
INTVCC LOAD (mA)
3758 G15
INTVCC Line Regulation
7.30
7.25
7.20
7.15
7.10
0
10 20 30 40 50 60 70 80 90 100
VIN (V)
3758 G16
INTVCC Dropout Voltage
vs Current, Temperature
1000 VIN = 6V
900
800
125°C
700
600
500
400
300
200
100
0
0
2
4
6
INTVCC LOAD (mA)
150°C
75°C
25°C
0°C
–55°C
8
10
3758 G17
Gate Drive Rise
and Fall Time vs CL
90
INTVCC = 7.2V
80
70
60
RISE TIME
FALL TIME
50
40
30
20
10
0
0
5 10 15 20 25 30
CL (nF)
3758 G18
Gate Drive Rise
and Fall Time vs INTVCC
30
CL = 3300pF
25
RISE TIME
20
FALL TIME
15
Typical Start-Up Waveforms
VIN = 48V
VOUT
10V/DIV
FBX Frequency Foldback
Waveforms During Overcurrent
VOUT
20V/DIV
VIN = 48V
VSW
50V/DIV
10
IL1A + IL1B
1A/DIV
IL1A + IL1B
2A/DIV
5
0
3
6
9
12
15
INTVCC (V)
3758 G19
2ms/DIV
3758 G20
SEE TYPICAL APPLICATION: 18V TO 72V INPUT,
24V OUTPUT SEPIC CONVERTER
50µs/DIV
3758 G21
SEE TYPICAL APPLICATION: 18V TO 72V INPUT,
24V OUTPUT SEPIC CONVERTER
3758afd
7
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