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LT3741 Datasheet(PDF) 6 Page - Linear Technology

Part # LT3741
Description  60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum
PDF  32 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3741 Datasheet(HTML) 6 Page - Linear Technology

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LT8390
6
8390fa
For more information www.linear.com/LT8390
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs Load Current
(Buck Region)
Efficiency vs Load Current
(Buck-Boost Region)
Efficiency vs Load Current
(Boost Region)
TA = 25°C, unless otherwise noted.
Switching Waveforms
(Buck Region)
Switching Waveforms
(Buck-Boost Region)
Switching Waveforms
(Boost Region)
VOUT vs IOUT (CV/CC)
VIN Shutdown Current
VIN Quiescent Current
FRONT PAGE APPLICATION
VIN = 24V, VOUT = 12V, fSW = 400kHz
LOAD CURRENT (A)
0
0.5
1
1.5
2
2.5
3
3.5
4
40
50
60
70
80
90
100
8390 G01
FRONT PAGE APPLICATION
VIN = 12V, VOUT = 12V, fSW = 400kHz
LOAD CURRENT (A)
0
0.5
1
1.5
2
2.5
3
3.5
4
40
50
60
70
80
90
100
8390 G02
FRONT PAGE APPLICATION
VIN = 5V, VOUT = 12V, fSW = 400kHz
LOAD CURRENT (A)
0
0.5
1
1.5
2
2.5
3
3.5
4
40
50
60
70
80
90
100
8390 G03
1µs/DIV
FRONT PAGE APPLICATION
VIN = 18V, IOUT = 3A
VSW1
10V/DIV
VSW2
10V/DIV
IL
2A/DIV
VOUT
500mV/DIV
8390 G04
1µs/DIV
FRONT PAGE APPLICATION
VIN = 12V, IOUT = 3A
VSW1
10V/DIV
VSW2
10V/DIV
IL
2A/DIV
VOUT
500mV/DIV
8390 G05
1µs/DIV
FRONT PAGE APPLICATION
VIN = 8V, IOUT = 3A
VSW1
10V/DIV
VSW2
10V/DIV
IL
2A/DIV
VOUT
500mV/DIV
8390 G06
LOAD CURRENT (A)
0
1
2
3
4
5
6
0
2
4
6
8
10
12
14
8390 G07
TEMPERATURE (°C)
–50
0.0
2.5
2.0
1.5
1.0
0.5
3.0
125
100
150
–25
0
25
8390 G08
75
50
VIN = 60V
VIN = 12V
VIN = 4V
TEMPERATURE (°C)
–50
1.8
2.6
2.4
2.2
2.0
2.8
125
100
150
–25
0
25
8390 G09
75
50
VIN = 60V
VIN = 12V
VIN = 4V



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