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LT1372 データシート(PDF) 4 Page - Linear Technology

部品番号 LT1372
部品情報  500kHz and 1MHz High Efficiency 1.5A Switching Regulators
PDF  12 Pages
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メーカー  LINER [Linear Technology]
ホームページ  http://www.linear.com
Logo LINER - Linear Technology

LT1372 データシート(HTML) 4 Page - Linear Technology

  LT1372 Datasheet HTML 1Page - Linear Technology LT1372 Datasheet HTML 2Page - Linear Technology LT1372 Datasheet HTML 3Page - Linear Technology LT1372 Datasheet HTML 4Page - Linear Technology LT1372 Datasheet HTML 5Page - Linear Technology LT1372 Datasheet HTML 6Page - Linear Technology LT1372 Datasheet HTML 7Page - Linear Technology LT1372 Datasheet HTML 8Page - Linear Technology LT1372 Datasheet HTML 9Page - Linear Technology Next Button
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4
LT1372/LT1377
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
LT1372 • 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 Pin Input Current
vs Voltage
Error Amplifier Transconductance
vs Temperature
Switching Frequency
vs Feedback Pin Voltage
VC Pin Threshold and High
Clamp Voltage vs Temperature
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
LT1372 • G06
Minimum Synchronization
Voltage vs Temperature
TEMPERATURE (
°C)
–50
0
0.5
1.0
1.5
2.0
050
100
150
LT1372 • G05
2.5
3.0
–25
25
75
125
fSYNC = 700kHz (LT1372)
fSYNC = 1.4MHz (LT1377)
LT1377
LT1372
S/S PIN VOLTAGE (V)
–1
1
3
5
7
LT1372 • 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
LT1372 • 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
LT1372 • G09
400
1600
1800
1200
–25
25
100 125
150
gm =
∆I (VC)
∆V (FB)
TEMPERATURE (
°C)
–50
0.4
0.6
1.0
1.2
1.4
2.4
1.8
0
50
75
LT1372 • G10
0.8
2.0
2.2
1.6
–25
25
100 125
150
VC HIGH CLAMP
VC THRESHOLD
TEMPERATURE (
°C)
–50
400
500
600
150
LT1372 • G11
300
200
0
0
50
100
100
800
700
–25
25
75
125
VFB =VREF
Feedback Input Current
vs Temperature
TEMPERATURE (
°C)
–50
–50
–30
0
0
50
75
LT1372 • G12
–40
–10
–20
–25
25
100 125
150
VNFB =VNFR
Negative Feedback Input Current
vs Temperature
TYPICAL PERFOR A CE CHARACTERISTICS



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