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LT3971 Datasheet(PDF) 4 Page - Linear Technology

Part # LT3971
Description  38V, 1.2A, 2MHz Step-Down Regulator with 2.8 Quiescent Current
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3971 Datasheet(HTML) 4 Page - Linear Technology

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LT3971
4
3971f
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency, VOUT = 3.3V
No Load Supply Current
No Load Supply Current
Feedback Voltage
Efficiency, VOUT = 5V
Efficiency, VOUT = 3.3V
Efficiency, VOUT = 5V
TA = 25°C, unless otherwise noted.
Maximum Load Current
Maximum Load Current
LOAD CURRENT (A)
3971 G01
100
30
40
50
60
70
80
90
20
0
1.2
1
0.8
0.6
0.4
0.2
VIN = 12V
VIN = 24V
VIN = 36V
FRONT PAGE APPLICATION
VOUT = 5V
R1 = 1M
R2 = 309k
LOAD CURRENT (A)
FRONT PAGE APPLICATION
3971 G02
100
30
40
50
60
70
80
90
20
0
1.2
1
0.8
0.6
0.4
0.2
VIN = 12V
VIN = 24V
VIN = 36V
LOAD CURRENT (mA)
3971 G03
100
30
20
10
40
50
60
70
80
90
0
0.01
1000
100
10
1
0.1
VIN = 36V
FRONT PAGE APPLICATION
VOUT = 5V
R1 = 1M
R2 = 309k
VIN = 24V
VIN = 12V
LOAD CURRENT (mA)
3971 G04
90
30
20
10
40
50
60
70
80
0
0.01
1000
100
10
1
0.1
VIN = 12V
VIN = 24V
VIN = 36V
FRONT PAGE APPLICATION
TEMPERATURE (°C)
3971 G05
100
10
1
–55
–25
155
125
95
65
35
5
DIODES, INC.
DFLS2100
INPUT VOLTAGE (V)
0
1.0
10
FRONT PAGE APPLICATION
VOUT = 3.3V
20
30
40
3971 G06
2.0
1.5
4.0
3.5
3.0
2.5
TEMPERATURE (°C)
3971 G07
1.205
1.180
1.185
1.190
1.195
1.200
1.175
–55
155
65
95
125
35
5
–25
INPUT VOLTAGE (V)
3971 G08
3.0
0.5
1.0
1.5
2.0
2.5
0
540
25
30
35
TYPICAL
MINIMUM
20
15
10
FRONT PAGE APPLICATION
VOUT = 3.3V
INPUT VOLTAGE (V)
3971 G09
2.5
0.5
1.0
1.5
2.0
0
540
25
30
35
TYPICAL
MINIMUM
20
15
10
FRONT PAGE APPLICATION
VOUT = 5V



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