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LT3957 Datasheet(PDF) 5 Page - Linear Technology

Part # LT3957
Description  Wide Input Voltage Range Boost/SEPIC/Inverting Converter with 6A, 40V Switch
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3957 Datasheet(HTML) 5 Page - Linear Technology

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LT3959
5
3959f
TYPICAL PERFORMANCE CHARACTERISTICS
Dynamic Quiescent Current
vs Switching Frequency
RT vs Switching Frequency
Normalized Switching Frequency
vs FBX Voltage
Switching Frequency
vs Temperature
SW Current Limit vs Temperature
SW Current Limit vs Duty Cycle
FBX Positive Regulation Voltage
vs Temperature
FBX Negative Regulation Voltage
vs Temperature
Quiescent Current
vs Temperature
SWITCHING FREQUENCY (kHz)
0
15
20
25
600
1000
3959 G04
10
200
400
800
5
0
IQ (VIN)
IQ (DRIVE)
DRIVE = 6V
SWITCHING FREQUENCY (kHz)
0
60
50
80
70
100
90
600
1000
3959 G05
40
30
200
100
400
800
700
300
500
900
20
10
0
FBX VOLTAGE (V)
–0.8
80
60
120
100
1.6
3959 G06
40
–0.4
0.8
0
0.4
1.2
20
0
TEMPERATURE (°C)
–50
1.61
1.62
0
125
3959 G01
1.60
–25
25
50
75
100
1.59
1.58
TEMPERATURE (°C)
–50
–0.79
–0.78
0
125
3959 G02
–0.80
–25
25
50
75
100
–0.81
–0.82
TEMPERATURE (°C)
–50
2.4
2.0
1.6
1.2
0.4
0.8
0.0
0
125
3959 G03
–25
25
50
75
100
IQ (VIN)
VIN = 12V
DRIVE = 6V
IQ (DRIVE)
TEMPERATURE (°C)
–50
7.6
7.4
7.2
7.0
6.8
6.6
6.4
0
125
3959 G08
–25
25
50
75
100
DUTY CYCLE (%)
0
6.5
5.5
7.0
8.0
7.5
100
3959 G09
6.0
20
60
40
80
5.0
TEMPERATURE (°C)
–50
350
325
300
275
250
0
125
3959 G07
–25
25
50
75
100
TA = 25°C, unless otherwise noted.


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