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LT1071HV Datasheet(PDF) 4 Page - Linear Technology

Part # LT1071HV
Description  5A and 2.5A High Efficiency Switching Regulators
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1071HV Datasheet(HTML) 4 Page - Linear Technology

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4
LT1070/LT1071
TYPICAL PERFORMANCE CHARACTERISTICS
Switch Current Limit vs Duty Cycle
DUTY CYCLE (%)
0
16
14
12
10
8
6
4
2
0
80
1070/71 G01
20
40
60
100
70
10
30
50
90
FOR LT1071, DIVIDE
VERTICAL SCALE BY 2
–55
°C
125
°C
25
°C
Flyback Blanking Time
JUNCTION TEMPERATURE (
°C)
–75
1.0
1.2
1.6
1.8
2.0
–25
25
50
150
1070/71 G03
1.4
–50
0
75 100 125
2.2
JUNCTION TEMPERATURE (
°C)
–75
90
91
93
94
95
–25
25
50
150
1070/71 G02
92
–50
0
75 100 125
96
Maximum Duty Cycle
Minimum Input Voltage
TEMPERATURE (
°C)
–75
2.3
2.4
2.6
2.7
2.8
–25
25
50
150
1070/71 G04
2.5
–50
0
75 100 125
2.9
SWITCH CURRENT = 5A
SWITCH CURRENT = 0A
Switch Saturation Voltage
SWITCH CURRENT (A)
0
0.8
1.2
8
1070/71 G05
0.4
0
1.0
25
°C
1.4
0.6
0.2
2
4
6
1
3
5
7
1.6
FOR LT1071, DIVIDE
CURRENT BY 2
100
°C
–55
°C
150
°C
Isolated Mode Flyback
Reference Voltage
TEMPERATURE (
°C)
–75
19
20
21
125
1070/71 G06
18
17
15
–25
25
75
– 50
150
0
50
100
16
23
22
RFEEDBACK = 500Ω
RFEEDBACK = 1k
RFEEDBACK = 10k
Line Regulation
Feedback Bias Current
vs Temperature
INPUT VOLTAGE (V)
0
–5
–3
–1
1
10
20
30
40
1070/71 G07
50
3
5
–4
–2
0
2
4
60
TJ = 150°C
TJ = 25°C
TJ = –55°C
TEMPERATURE (
°C)
–75
600
500
400
300
200
100
0
125
1070/71 G09
–25
25
75
– 50
150
0
50
100
800
700
Reference Voltage
vs Temperature
TEMPERATURE (
°C)
–75
1.246
1.244
1.242
1.240
1.238
1.236
1.234
125
1070/71 G08
–25
25
75
– 50
150
0
50
100
1.250
1.248
40
39
38
37
36
35
34
42
41
SWITCHING
FREQUENCY
REFERENCE
V0LTAGE


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