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