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LT1373 Datasheet(PDF) 4 Page - Linear Technology

Part # LT1373
Description  250kHz Low Supply Current High Efficiency 1.5A Switching Regulator
Download  12 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1373 Datasheet(HTML) 4 Page - Linear Technology

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4
LT1373
Shutdown Delay and Threshold
vs Temperature
Error Amplifier Output Current
vs Feedback Pin Voltage
TEMPERATURE (
°C)
–50
0
2
6
8
10
20
14
0
50
75
LT1373 • 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
TEMPERATURE (
°C)
–50
0
0.5
1.0
1.5
2.0
050
100
150
LT1373 • G05
2.5
3.0
–25
25
75
125
fSYNC = 330kHz
Minimum Synchronization
Voltage vs Temperature
FEEDBACK PIN VOLTAGE (V)
100
–75
–50
–25
75
25
–0.1
0.1
50
0
–0.3
–0.2
VREF
–55
°C
125
°C
25
°C
LT1373 • G06
S/S Pin Input Current
vs Voltage
S/S PIN VOLTAGE (V)
–1
1
3
5
7
LT1373 • G07
–1
–3
0
2
4
–2
–4
–5
1
3
5
08
2
4
6
9
VIN = 5V
Error Amplifier Transconductance
vs Temperature
Switching Frequency
vs Feedback Pin Voltage
FEEDBACK PIN VOLTAGE (V)
0
70
90
110
0.8
LT1373 • 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
500
0
50
75
LT1373 • G09
100
400
300
–25
25
100 125
150
gm =
∆I (VC)
∆V (FB)
VC Pin Threshold and High
Clamp Voltage vs Temperature
Negative Feedback Input
Current vs Temperature
Feedback Input Current
vs Temperature
TEMPERATURE (
°C)
–50
0.4
0.6
1.0
1.2
1.4
2.4
1.8
0
50
75
LT1373 • G10
0.8
2.0
2.2
1.6
–25
25
100 125
150
VC HIGH CLAMP
VC THRESHOLD
TEMPERATURE (
°C)
–50
200
250
300
150
LT1373 • G11
150
100
0
0
50
100
50
400
350
–25
25
75
125
VFB = VREF
TEMPERATURE (
°C)
–50
–20
–12
–14
0
0
50
75
LT1373 • G12
–16
–18
–4
–6
–2
–8
–10
–25
25
100 125
150
VNFB = VNFR
TYPICAL PERFOR A CE CHARACTERISTICS


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