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LT1370 Datasheet(PDF) 4 Page - Linear Technology

Part # LT1370
Description  500kHz High Efficiency 6A Switching Regulator
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1370 Datasheet(HTML) 4 Page - Linear Technology

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4
LT1370
sn1370 1370fs
TYPICAL PERFORMANCE CHARACTERISTICS
Switching Frequency
vs Feedback Pin Voltage
VOLTAGE (V)
–1
1
7
LT1370 • G07
–1
–3
0
2
–2
–4
1
3
5
0
2
4
6
FEEDBACK PIN VOLTAGE (V)
0
70
90
110
0.8
LT1370 • 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
Switch Saturation Voltage
vs Switch Current
DUTY CYCLE (%)
6.6
7.4
7.2
7.8
8.2
7.0
6.8
7.6
8.0
20
40
60
80
LT1370 • G02
100
10
0
30
50
70
90
Switch Current Limit
vs Duty Cycle
SWITCH CURRENT (A)
0
300
400
550
5
LT1370 • G01
200
100
250
350
450
500
150
50
0
1
23
4
6
125°C
75°C
25°C
0°C
TEMPERATURE (°C)
–50
1.8
2.0
2.2
2.4
2.6
050
100
150
LT1370 • G03
2.8
3.0
–25
25
75
125
Minimum Input Voltage
vs Temperature
TEMPERATURE (°C)
–50
0
2
6
8
10
20
14
0
50
75
LT1370 • 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
Shutdown Delay and Threshold
vs Temperature
Error Amplifier Output Current
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
LT1370 • G06
TEMPERATURE (°C)
–50
0
0.5
1.0
1.5
2.0
050
100
150
LT1370 • G05
2.5
3.0
–25
25
75
125
fSYNC = 700kHz
Minimum Synchronization
Voltage vs Temperature
Error Amplifier Transconductance
vs Temperature
TEMPERATURE (°C)
–50
0
200
600
800
1000
2000
1400
0
50
75
LT1370 • G09
400
1600
1800
1200
–25
25
100 125
150
gm =
∆I (VC)
∆V (FB)
S/S Pin Input Current vs Voltage



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