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LTC3118_15 Datasheet, PDF (5/38 Pages) Linear Technology – 18V, 2A Buck-Boost DC/DC Converter with Low-Loss Dual Input PowerPath
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LTC3118
Typical Performance Characteristics TA = 25°C, unless otherwise noted.
VOUT = 5V, Efficiency and Power
Loss vs Load Current from VIN1
100
5
90 BURST
80
4
70
60
3
50
PWM
40
2
30
3.6VIN
20
10
5VIN
12VIN
1
LOSS
0
0
0.0001 0.001 0.01 0.1
1
10
LOAD CURRENT (A)
3118 G04
VOUT = 3.3V Efficiency and Power
Loss vs Load Current from VIN1
100
5
90 BURST
80
4
70
2.7VIN
60
5VIN 3
12VIN
50
40
2
30
20
PWM
1
10
LOSS
0
0
0.0001 0.001 0.01 0.1
1
10
LOAD CURRENT (A)
3118 G07
Die Temperature Rise vs Load
Current, VOUT = 12V, 4-Layer
LTC3118 Demo Board
100
90
80
70
60
50
40
30
20
VIN = 5V
10
VIN = 12V
VIN = 18V
0
0
0.5
1
1.5
2
2.5
LOAD CURRENT (A)
3118 G10
VOUT = 5V, Efficiency and Power
Loss vs Load Current from VIN2
100
5
90 BURST
80
4
70
60
PWM
3
50
40
2
30
20
3.6VIN
5VIN
1
LOSS
10
12VIN
0
0
0.0001 0.001 0.01 0.1
1
10
LOAD CURRENT (A)
3118 G05
VOUT = 3.3V Efficiency and Power
Loss vs Load Current from VIN2
100
5
90 BURST
80
4
70
60
3
50
2.7VIN
5VIN
40
12VIN
2
30
20
10
0
0.0001
PWM
0.001 0.01 0.1
LOAD CURRENT (A)
1
LOSS
0
1
10
3118 G08
Die Temperature Rise vs Load
Current, VOUT = 5V, 4-Layer
LTC3118 Demo Board
100
90
80
70
60
50
40
30
20
VIN = 3.6V
10
VIN = 5V
VIN = 12V
0
0
0.5
1
1.5
2
2.5
LOAD CURRENT (A)
3118 G11
5VOUT Efficiency vs VIN1 or VIN2
Voltage with 500mA and 1A Load
Current
100
95
90
85
80
VIN1, LOAD = 500mA
75
VIN2, LOAD = 500mA
VIN1, LOAD = 1A
VIN2, LOAD = 1A
70
2 4 6 8 10 12 14 16 18
INPUT VOLTAGE (V)
3118 G06
3.3VOUT Efficiency vs VIN1 or VIN2
Voltage with 500mA and 1A Load
Current
100
95
90
85
80
VIN1, LOAD = 500mA
75
VIN2, LOAD = 500mA
VIN1, LOAD = 1A
VIN2, LOAD = 1A
70
2 4 6 8 10 12 14 16 18
INPUT VOLTAGE (V)
3118 G09
Die Temperature Rise vs Load
Current, VOUT = 3.3V, 4-Layer
LTC3118 Demo Board
100
90
80
70
60
50
40
30
20
VIN = 2.7V
10
VIN = 5V
0
VIN = 12V
0
0.5
1
1.5
2
2.5
LOAD CURRENT (A)
3118 G12
3118f
For more information www.linear.com/LTC3118
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