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LT3579 Datasheet(PDF) 5 Page - Linear Technology

Part # LT3579
Description  6A Boost/Inverting DC/DC Converter with Fault Protection
PDF  40 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3579 Datasheet(HTML) 5 Page - Linear Technology

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LT3579/LT3579-1
5
35791f
TYPICAL PERFORMANCE CHARACTERISTICS
Switch Current Limit
vs Temperature
Commanded Switch Current vs SS
Positive Feedback Voltage
Oscillator Frequency
Oscillator Frequency During
Soft-Start
CLKOUT Duty Cycle
Switch Current Limit
Switch Saturation Voltage
Switch Current Sharing
DUTY CYCLE (%)
20
0
6
7
8
9
5
4
3
2
1
10
60
70
80
30
40
35791 G01
50
SW1 + SW2 CURRENT (A)
0
0
300
250
150
200
100
50
350
45678
12
35791 G02
3
VSW1 = VSW2
SW1 CURRENT (A)
0
0.0
0.1
0.8
0.9
0.6
0.7
0.4
0.5
0.2
0.3
1.0
3
3.5
4
1
1.5
0.5
35791 G03
2
2.5
TEMPERATURE (°C)
–50
0
8
9
7
6
5
4
3
2
1
10
–25
75
100 125 150
025
35791 G04
50
TA = 25°C, unless otherwise noted.
SS VOLTAGE (V)
0
0
9
5
6
7
8
4
3
2
1
10
0.6
0.8
1
1.2
0.2
35791 G05
0.4
TEMPERATURE (°C)
–50
1.2
1.225
1.22
1.215
1.21
1.205
1.23
–25
50
75
100 125 150
0
35791 G06
25
TEMPERATURE (°C)
–50
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
–25
100 125 150
025
50
35791 G07
75
RT = 432k
RT = 34k
FB VOLTAGE (V)
0
0
1/6
1/5
1/4
1/3
1/2
1
0.6
0.8
1
1.2
0.2
0.4
35791 G08
BOOSTING
CONFIGURATIONS
INVERTING
CONFIGURATIONS
TEMPERATURE (°C)
–50
0
70
60
50
40
30
20
80
–25
75
100 125 150
025
35791 G09
50



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