Datasheet

LTC3115-2
6
31152f
For more information www.linear.com/LTC3115-2
Typical perForMance characTerisTics
Combined V
CC
/PV
CC
Supply
Current vs V
CC
Combined V
CC
/PV
CC
Supply
Current vs Temperature Output Voltage Load Regulation
V
CC
Regulator Load Regulation
(T
A
= 25°C unless otherwise specified)
V
CC
Regulator Line Regulation
Output Voltage Line Regulation
V
CC
Voltage vs Temperature
V
CC
(V)
2.5
V
CC
/PV
CC
CURRENT (mA)
6
8
10
4
5
31152 G16
4
2
0
3 3.5 4.5
12
14
16
5.5
f
SW
= 1MHz
f
SW
= 500kHz
TEMPERATURE (°C)
–50
11.0
V
CC
/PV
CC
CURRENT (mA)
11.1
11.3
11.4
11.5
12.0
11.7
0
50
31152 G17
11.2
11.8
11.9
11.6
100
150
V
IN
= 6V
V
OUT
= 5V
f
SW
= 1MHz
INPUT VOLTAGE (V)
0
–0.5
CHANGE IN OUTPUT VOLTAGE FROM V
IN
= 20V (%)
–0.4
–0.2
–0.1
0
0.5
0.2
10
20
31152 G19
–0.3
0.3
0.4
0.1
30
40
TEMPERATURE (°C)
–50
–1.0
CHANGE FROM 25°C (%)
–0.8
–0.4
–0.2
0
1.0
0.4
0
50
31152 G20
–0.6
0.6
0.8
0.2
100
150
INPUT VOLTAGE (V)
0
–1.0
CHANGE FROM V
IN
= 24V (%)
–0.8
–0.4
–0.2
0
1.0
0.4
10
20
31152 G22
–0.6
0.6
0.8
0.2
30
40
LOAD CURRENT (A)
0
–0.5
CHANGE IN VOLTAGE FROM ZERO LOAD (%)
–0.4
–0.2
–0.1
0
0.5
0.2
0.5
1
31152 G18
–0.3
0.3
0.4
0.1
1.5
2
I
CC
(mA)
0
CHANGE IN VOLTAGE FROM I
CC
= 0mA (%)
–1.0
–0.5
0
40
31152 G21
–1.5
–2.0
–2.5
10
20
30
50
Efficiency vs Switching Frequency
Combined V
CC
/PV
CC
Supply
Current vs Switching Frequency
SWITCHING FREQUENCY (kHz)
0
EFFICIENCY (%)
80
85
2000
31152 G14
75
70
500
1000
1500
95
90
BOOTSTRAPPED
PWM MODE
L = 47µH
V
IN
= 24V
V
OUT
= 5V
I
LOAD
= 0.5A
NON-BOOTSTRAPPED
SWITCHING FREQUENCY (kHz)
0
20
25
35
1500
31152 G15
15
10
500 1000 2000
5
0
30
V
CC
/PV
CC
CURRENT (mA)
V
IN
= 36V
V
OUT
= 24V
V
IN
= 12V
V
OUT
= 5V