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LT1371CSW 数据表(PDF) 4 Page - Linear Technology

部件名 LT1371CSW
功能描述  500kHz High Efficiency 3A Switching Regulator
PDF  16 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LT1371CSW 数据表(HTML) 4 Page - Linear Technology

  LT1371CSW Datasheet HTML 1Page - Linear Technology LT1371CSW Datasheet HTML 2Page - Linear Technology LT1371CSW Datasheet HTML 3Page - Linear Technology LT1371CSW Datasheet HTML 4Page - Linear Technology LT1371CSW Datasheet HTML 5Page - Linear Technology LT1371CSW Datasheet HTML 6Page - Linear Technology LT1371CSW Datasheet HTML 7Page - Linear Technology LT1371CSW Datasheet HTML 8Page - Linear Technology LT1371CSW Datasheet HTML 9Page - Linear Technology Next Button
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4
LT1371
TYPICAL PERFORMANCE CHARACTERISTICS
Error Amplifier Output Current
vs Feedback Pin Voltage
Shutdown Delay and Threshold
vs Temperature
TEMPERATURE (
°C)
–50
0
2
6
8
10
20
14
0
50
75
LT1371 • G04
4
16
18
12
0
0.2
0.6
0.8
1.0
2.0
1.4
0.4
1.6
1.8
1.2
–25
25
100 125
150
SHUTDOWN THRESHOLD
SHUTDOWN DELAY
S/S or SHDN Pin Input Current
vs Voltage
Error Amplifier Transconductance
vs Temperature
Switching Frequency
vs Feedback Pin Voltage
FEEDBACK PIN VOLTAGE (V)
400
–300
–200
–100
300
100
–0.1
0.1
200
0
–0.3
–0.2
VREF
–55
°C
125
°C
25
°C
LT1371 • G06
Minimum Synchronization
Voltage vs Temperature
TEMPERATURE (
°C)
–50
0
0.5
1.0
1.5
2.0
050
100
150
LT1371 • G05
2.5
3.0
–25
25
75
125
fSYNC = 700kHz
VOLTAGE (V)
–1
1
3
5
7
LT1371 • G07
–1
–3
0
2
4
–2
–4
–5
1
3
5
08
2
4
6
9
VIN = 5V
FEEDBACK PIN VOLTAGE (V)
0
70
90
110
0.8
LT1371 • G08
50
30
60
80
100
40
20
10
0.2
0.4
0.6
0.1
0.9
0.3
0.5
0.7
1.0
TEMPERATURE (
°C)
–50
0
200
600
800
1000
2000
1400
0
50
75
LT1371 • G09
400
1600
1800
1200
–25
25
100 125
150
gm =
∆I (VC)
∆V (FB)
Switch Saturation Voltage
vs Switch Current
TEMPERATURE (
°C)
–50
1.8
2.0
2.2
2.4
2.6
050
100
150
LT1371 • G03
2.8
3.0
–25
25
75
125
Minimum Input Voltage
vs Temperature
DUTY CYCLE (%)
0
2
4
6
1
3
5
20
40
60
80
LT1371 • G02
100
10
0
30
50
70
90
25
°C AND
125
°C
–55
°C
Switch Current Limit
vs Duty Cycle
SWITCH CURRENT (A)
0
0.6
0.8
1.0
3.2
LT1371 • G01
0.4
0.2
0.5
0.7
0.9
0.3
0.1
0
0.8
1.6
2.4
4.0
2.8
0.4
1.2
2.0
3.6
100
°C
150
°C
25
°C
–55
°C



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