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LT3971 Datasheet(PDF) 5 Page - Linear Technology

Part # LT3971
Description  42V, 2.5A Synchronous Step-Down Regulator
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3971 Datasheet(HTML) 5 Page - Linear Technology

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LT8610
5
8610p
TYPICAL PERFORMANCE CHARACTERISTICS
Top FET Current Limit vs Duty Cycle
Top FET Current Limit
Bottom FET Current Limit
Switch Drop
Minimum On-Time
Switch Drop
No Load Supply Current
No Load Supply Current
Minimum Off-Time
INPUT VOLTAGE (V)
0
0
0.5
1.5
2.0
2.5
5.0
3.5
10
20
25
45
8610 G10
1.0
4.0
4.5
3.0
515
30
35
40
VOUT = 3.3V
IN REGULATION
TEMPERATURE (°C)
–55
–25
0
10
25
5
65
95
8610 G11
5
20
15
35
125
155
VOUT = 3.3V
VIN = 12V
IN REGULATION
DUTY CYCLE
0
3.5
4.0
4.5
0.6
1.0
8610 G13
3.0
2.5
2.0
0.2
0.4
0.8
5.0
5.5
6.0
TEMPERATURE (°C)
–55
2.5
3.0
3.5
4.0
4.5
5.0
–25
535
65
8610 G14
95
125
30% DC
70% DC
TEMPERATURE (°C)
–55
2.4
2.6
2.8
3.0
3.2
3.6
–25
535
65
8610 G15
95
125
3.4
TEMPERATURE (°C)
–55
30
35
45
50
55
80
65
5
65
95
125
8610 G17
40
70
75
60
–25
35
155
ILOAD = 1A, VSYNC = 0V
ILOAD = 1A, VSYNC = 3V
ILOAD = 2.5A, VSYNC = 0V
ILOAD = 2.5A, VSYNC = 3V
TEMPERATURE (°C)
–50
95
35
8610 G18
80
70
–25
5
65
65
60
100
90
85
75
95
125
155
VIN = 3.3V
ILOAD = 0.5A
TEMPERATURE (°C)
–55
–25
0
100
250
5
65
95
8610 G40
50
200
150
35
125
155
TOP SW
BOT SW
SWITCH CURRENT = 1A
SWITCH CURRENT (A)
0
0
50
150
200
250
2
450
8610 G41
100
1
0.5
2.5
1.5
3
300
350
400
TOP SW
BOT SW



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