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LTC3539 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3539
Description  2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters
PDF  12 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3539 Datasheet(HTML) 4 Page - Linear Technology

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LTC3539/LTC3539-2
4
3539f
VIN (V)
2000
200
1800
1400
1000
600
1600
1200
800
400
0
3539 G05
VOUT = 1.8V
VOUT = 2.5V
VOUT = 3.3V
VOUT = 5V
0.5
1.5
2.5
1.0
2.0
3.5
5.0
4.5
3.0
4.0
VIN (V)
100
10
90
70
50
30
80
60
40
20
0
3539 G04
VOUT = 1.8V
VOUT = 2.5V
VOUT = 3.3V
VOUT = 5V
0.5
1.5
2.5
1.0
2.0
3.5
4.5
3.0
4.0
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs Load Current and
VIN, VOUT = 1.8V
Efficiency vs Load Current and
VIN, VOUT = 3.3V
Efficiency vs Load Current and
VIN, VOUT = 5V
No Load Input Current vs VIN
Maximum Output Current vs VIN
LOAD CURRENT (mA)
100
10
90
70
50
30
80
60
40
20
0
1000
100
10
1
0.1
0.01
3539 G01
VIN = 1V
VIN = 1.2V
VIN = 1.5V
POWER LOSS
EFFICIENCY
0.1
100
1000
10
1
LOAD CURRENT (mA)
100
10
90
70
50
30
80
60
40
20
0
3539 G02
VIN = 1.2V
VIN = 1.8V
VIN = 3V
POWER LOSS
EFFICIENCY
0.1
100
1000
10
1
0.1
1
10
100
1000
0.1
1
10
100
1000
LOAD CURRENT (mA)
100
10
90
70
50
30
80
60
40
20
0
3539 G03
VIN = 2.4V
VIN = 3.6V
VIN = 4.2V
POWER LOSS
EFFICIENCY
0.1
100
1000
10
1
Minimum Load Resistance During
Start-Up vs VIN
Burst Mode Threshold Current vs
VIN and VOUT
0.65
0.85
1.05
0.75
0.95
1.15
VIN (V)
3539 G06
10000
1000
100
10
0.1
VOUT = 3.3V
INPUT VOLTAGE (V)
60
50
30
10
40
20
0
3539 G11
VOUT = 1.8V
VOUT = 2.5V
VOUT = 3.3V
VOUT = 5V
0.5
0
1.5
2.5
1.0
2.0
3.5
4.5
3.0
4.0
(TA = 25°C unless otherwise noted)
Normalized Current Limit vs VOUT
VOUT (V)
1.10
1.05
0.95
0.85
1.00
0.90
0.80
3539 G16
1.0
1.5
2.5
2.0
3.5
5.0
4.5
3.0
4.0



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