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X-11181-002 Datasheet(PDF) 4 Page - Linear Technology

Part No. X-11181-002
Description  Isolated No Opto-Coupler Flyback Controller
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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 4 page
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LT3798
4
3798f
TYPICAL PERFORMANCE CHARACTERISTICS
VREF vs Temperature
VREF vs VIN
SENSE Current Limit Threshold
vs Temperature
Minimum Oscillator Frequency
vs Temperature
Backup Oscillator Frequency
vs Temperature
Maximum Oscillator Frequency
vs Temperature
EN/UVLO Threshold
vs Temperature
EN/UVLO Hysteresis Current
vs Temperature
VIN IQ vs Temperature
TA = 25°C, unless otherwise noted.
TEMPERATURE (°C)
–50
0
50
75
–25
25
100 125 150
3798 G01
1.2
1.22
1.26
1.24
1.28
1.3
RISING
FALLING
TEMPERATURE (°C)
–50
0
50
75
–25
25
100 125 150
3798 G02
10
10.5
11
11.5
12
TEMPERATURE (°C)
–50
0
50
75
–25
25
100 125 150
3798 G03
0
20
10
30
40
60
50
100
90
80
70
VIN = 12V
VIN = 24V
TEMPERATURE (°C)
–50
1.900
1.925
1.975
2.000
2.025
2.100
2.075
0
50
75
1.950
2.050
–25
25
100 125 150
3798 G05
VIN = 24V WITH NO LOAD
VIN = 24V WITH 200μA LOAD
VIN (V)
10
1.95
1.96
1.98
1.99
2
2.01
2.05
2.03
2.04
1.97
2.02
15
25
20
30
35
40
3798 G05
NO LOAD
200μA LOAD
TEMPERATURE (°C)
–50
0
20
60
80
100
120
0
50
75
40
–25
25
100 125 150
3798 G06
MAX ILIM
MIN ILIM VIN_SENSE = 34μA
MIN ILIM VIN_SENSE = 21μA
TEMPERATURE (°C)
–50
120
145
195
220
0
50
75
170
–25
25
100 125 150
3798 G06a
TEMPERATURE (°C)
–50
0
2
3
4
5
0
50
75
1
–25
25
125
100
150
3799 G07
VFB < VOVP
VOVP > VFB
TEMPERATURE (°C)
–50
0
10
15
20
25
0
50
75
5
–25
25
125
100
150
3798 G07a




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