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LT3971EDD-TRPBF 查看數據表(PDF) - Linear Technology
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产品描述 (功能)
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LT3971EDD-TRPBF
38V, 1.2A, 2MHz Step-Down Regulator with 2.8µA Quiescent Current
Linear Technology
LT3971EDD-TRPBF Datasheet PDF : 28 Pages
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LT3971/LT3971-3.3/LT3971-5
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C, unless otherwise noted.
LT3971 Feedback Voltage
1.205
1.200
1.195
1.190
1.185
1.180
1.175
–55 –25
5 35 65 95
TEMPERATURE (°C)
125 155
3971 G07
LT3971-3.3 Output Voltage
3.345
3.330
3.315
3.300
3.285
3.270
3.255
–55 –25
5 35 65 95
TEMPERATURE (°C)
125 155
3971 G28
LT3971-5 Output Voltage
5.06
5.04
5.02
5.00
4.98
4.96
4.94
–55 –25
5 35 65 95
TEMPERATURE (°C)
125 155
3971 G29
Maximum Load Current
3.0
V
OUT
= 3.3V
2.5
TYPICAL
2.0
MINIMUM
1.5
1.0
0.5
0
5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
3971 G08
Maximum Load Current
2.5
V
OUT
= 5V
2.0
TYPICAL
1.5
MINIMUM
1.0
0.5
0
5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
3971 G09
Load Regulation
0.30
0.25
0.20
0.15
0.10
0.05
0
–0.05
–0.10
–0.15
–0.20
–0.25
–0.30
REFERENCED FROM V
OUT
AT 0.5A LOAD
0 200 400 600 800 1000 1200
LOAD CURRENT (mA)
3971 G10
Switching Frequency
1000
950
900
850
800
750
700
650
600
–55 –25
5 35 65 95
TEMPERATURE (°C)
125 155
3971 G11
Switch Current Limit
3.0
2.5
2.0
1.5
1.0
0.5
0
0
20
40
60
80 100
DUTY CYCLE (%)
3971 G12
Switch Current Limit
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
DUTY CYCLE = 30%
1.5
–55 –25 5 35 65 95
TEMPERATURE (°C)
125 155
3971 G13
3971fd
5
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