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LTC3115-2_15 Datasheet, PDF (5/42 Pages) Linear Technology – 40V, 2A Synchronous Buck-Boost DC/DC Converter
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LTC3115-2
Typical Performance Characteristics (TA = 25°C unless otherwise specified)
Burst Mode Efficiency, VOUT = 5V,
L = 15µH, Non-Bootstrapped
90
85
80
75
70
65
60
55
50
0.1
VIN = 3.6V
VIN = 12V
VIN = 24V
VIN = 36V
1
10
LOAD CURRENT (mA)
100
31152 G07
Burst Mode No-Load Input
Current vs VIN
400
VOUT = 24V
350
VOUT = 15V
VOUT = 5V
300
VOUT = 5V, BOOTSTRAPPED
250
200
150
100
50
0
2
10
40
INPUT VOLTAGE (V)
31152 G10
Maximum Load Current
vs VIN, PWM Mode
2.5
L = 15µH
fSW = 1MHz
2.0
1.5
1.0
0.5
0
2
VOUT = 24V
VOUT = 12V
VOUT = 5V
10
40
INPUT VOLTAGE (V)
31152 G47
Burst Mode Efficiency,
VOUT = 12V, L = 15µH
95
90
85
80
75
70
65
60
55
50
0.1
VIN = 5V
VIN = 12V
VIN = 24V
VIN = 36V
1
10
LOAD CURRENT (mA)
100
31152 G08
PWM Mode No-Load Input
Current vs VIN
50
fSW = 1MHz
45
40
VOUT = 24V
VOUT = 12V
VOUT = 5V
35
30
25
20
15
10
5
0
2
10
40
INPUT VOLTAGE (V)
31152 G11
Maximum Load Current
vs VIN, PWM Mode
2.5
L = 5.2µH
fSW = 2MHz
2.0
1.5
1.0
0.5
0
2
VOUT = 12V
VOUT = 5V
10
INPUT VOLTAGE (V)
40
31152 G48
For more information www.linear.com/LTC3115-2
Burst Mode Efficiency,
VOUT = 24V, L = 15µH
90
85
80
75
70
65
60
55
50
0.1
VIN = 12V
VIN = 18V
VIN = 24V
VIN = 36V
1
10
LOAD CURRENT (mA)
100
31152 G09
Maximum Load Current
vs VIN, PWM Mode
2.5
L = 22µH
fSW = 500kHz
2.0
1.5
1.0
0.5
0
2
VOUT = 24V
VOUT = 12V
VOUT = 5V
10
INPUT VOLTAGE (V)
40
31152 G12
Maximum Load Current
vs VIN, Burst Mode Operation
1000
L = 22µH
100
VOUT = 32V
VOUT = 12V
VOUT = 5V
10
2
10
40
INPUT VOLTAGE (V)
31152 G13
31152fa
5
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