Datasheet

LTC3115-1
5
31151fb
For more information www.linear.com/LTC3115-1
Burst Mode Efficiency, V
OUT
= 5V,
L = 15µH, Non-Bootstrapped
Burst Mode Efficiency,
V
OUT
= 12V, L = 15µH
Burst Mode Efficiency,
V
OUT
= 24V, L = 15µH
Typical perForMance characTerisTics
(T
A
= 25°C unless otherwise specified)
Maximum Load Current
vs V
IN
, Burst Mode Operation
Burst Mode No-Load Input
Current vs V
IN
PWM Mode No-Load Input
Current vs V
IN
Maximum Load Current
vs V
IN
, PWM Mode
Maximum Load Current
vs V
IN
, PWM Mode
Maximum Load Current
vs V
IN
, PWM Mode
LOAD CURRENT (mA)
0.1
70
EFFICIENCY (%)
80
90
1 10 100
31151 G07
60
65
75
85
55
50
V
IN
= 3.6V
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
LOAD CURRENT (mA)
0.1
70
EFFICIENCY (%)
80
95
90
1 10 100
31151 G08
60
65
75
85
55
50
V
IN
= 5V
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
LOAD CURRENT (mA)
0.1
70
EFFICIENCY (%)
80
90
1 10 100
31151 G09
60
65
75
85
55
50
V
IN
= 12V
V
IN
= 18V
V
IN
= 24V
V
IN
= 36V
INPUT VOLTAGE (V)
2
0
INPUT CURRENT (µA)
100
200
400
10 40
31151 G10
300
50
150
350
250
V
OUT
= 24V
V
OUT
= 15V
V
OUT
= 5V
V
OUT
= 5V, BOOTSTRAPPED
INPUT VOLTAGE (V)
2
0
INPUT CURRENT (mA)
10
20
30
40
10 40
31151 G11
50
5
15
25
35
45
V
OUT
= 24V
V
OUT
= 12V
V
OUT
= 5V
f
SW
= 1MHz
INPUT VOLTAGE (V)
LOAD CURRENT (A)
2.5
2.0
1.5
31151 G12
0
1.0
0.5
40
2 10
L = 22µH
f
SW
= 500kHz
V
OUT
= 24V
V
OUT
= 12V
V
OUT
= 5V
INPUT VOLTAGE (V)
2 10
10
LOAD CURRENT (mA)
100
1000
40
31151 G13
L = 22µH
V
OUT
= 32V
V
OUT
= 12V
V
OUT
= 5V
INPUT VOLTAGE (V)
LOAD CURRENT (A)
2.5
2.0
1.5
31151 G47
0
1.0
0.5
40
2 10
L = 15µH
f
SW
= 1MHz
V
OUT
= 24V
V
OUT
= 12V
V
OUT
= 5V
INPUT VOLTAGE (V)
LOAD CURRENT (A)
2.5
2.0
1.5
31151 G48
0
1.0
0.5
40
2 10
L = 5.2µH
f
SW
= 2MHz
V
OUT
= 12V
V
OUT
= 5V
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