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LT1072HV Datasheet(PDF) 4 Page - Linear Technology

Part # LT1072HV
Description  Available in MiniDiP, TO-220, and TO-3 Packages
Download  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1072HV Datasheet(HTML) 4 Page - Linear Technology

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4
LT1072
1072fc
Switch Current Limit vs Duty Cycle
Maximum Duty Cycle
Flyback Blanking Time
DUTY CYCLE (%)
0
4
3
2
1
0
80
LT1072 • TPC01
20
40
60
100
70
10
30
50
90
–55°C
125°C
25°C
JUNCTION TEMPERATURE (°C)
–75
90
91
93
94
95
–25
25
50
150
LT1072 • TPC02
92
–50
0
75 100 125
96
JUNCTION TEMPERATURE (°C)
–75
1.0
1.2
1.6
1.8
2.0
–25
25
50
150
LT1072 • TPC03
1.4
–50
0
75 100 125
2.2
Minimum Input Voltage
Switch Saturation Voltage
Isolated Mode Flyback Reference
Voltage
TEMPERATURE (°C)
–75
2.3
2.4
2.6
2.7
2.8
–25
25
50
150
LT1072 • TPC04
2.5
–50
0
75 100 125
2.9
SWITCH CURRENT = 1.25A
SWITCH CURRENT = 0A
SWITCH CURRENT (A)
0
0.8
1.2
2
LT1072 • TPC05
0.4
0
0.5
1
1.5
0.25
0.75
1.25
1.75
1.6
0.6
1.0
0.2
1.4
150°C
100°C
–55°C
25°C
TEMPERATURE (C°)
–75
19
20
21
125
LT1072 • TPC06
18
17
15
–25
25
75
–50
150
0
50
100
16
23
22
RFEEDBACK = 500Ω
RFEEDBACK = 1kΩ
RFEEDBACK = 10kΩ
Line Regulation
Reference Voltage and Switching
Frequency vs Temperature
Feedback Bias Current vs
Temperature
INPUT VOLTAGE (V)
0
–5
–3
–1
1
10
20
30
40
LT1072 • TPC07
50
3
5
–4
–2
0
2
4
60
TJ = 150°C
TJ = – 55°C
TJ =
25°
C
TEMPERATURE (°C)
–75
1.242
1.244
1.246
125
LT1072 • TPC08
1.240
1.238
1.234
–25
25
75
–50
150
0
50
100
1.236
1.250
1.248
38
39
40
37
36
34
35
42
41
REFERENCE VOLTAGE
SWITCHING FREQUENCY
TEMPERATURE (°C)
–75
400
500
600
125
LT1072 • TPC09
300
200
0
–25
25
75
–50
150
0
50
100
100
800
700
TYPICAL PERFOR A CE CHARACTERISTICS


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