Datasheet

3
LTC1514-3.3/LTC1514-5
TYPICAL PERFORMANCE CHARACTERISTICS
UW
LTC1514-3.3
Efficiency vs Output Current
INPUT VOLTAGE (V)
0
OUTPUT VOLTAGE RIPPLE (mV
P-P
)
250
200
150
100
50
0
8
1514 G03
2
4
6
10
V
OUT
= 3.3V
I
OUT
= 10mA
T
A
= 25°C
C
OUT
= 10µF
C
OUT
= 22µF
C
OUT
= 47µF
LTC1514-3.3 Output Voltage
Ripple vs Input Voltage
OUTPUT CURRENT (mA)
EFFICIENCY (%)
0.01 1 10
1514 G02
0.1 100
100
80
60
40
20
0
V
OUT
= 5V
T
A
= 25°C
V
IN
= 8V
V
IN
= 3.3V
V
IN
= 6V
V
IN
= 2.7V
LTC1514-5
Efficiency vs Output Current
OUTPUT CURRENT (mA)
EFFICIENCY (%)
0.01 1 10
1514 G01
0.1 100
100
80
60
40
20
0
V
OUT
= 3.3V
T
A
= 25°C
V
IN
= 2V
V
IN
= 4.4V
V
IN
= 2.7V
V
IN
= 6V
LTC1514-5 Output Voltage Ripple
vs Input Voltage
LTC1514-5 Operating Current
vs Input Voltage
LTC1514-3.3 Output Voltage
vs Input Voltage
INPUT VOLTAGE (V)
0
OUTPUT VOLTAGE RIPPLE (mV
P-P
)
250
200
150
100
50
0
8
1514 G04
2
4
6
10
V
OUT
= 5V
I
OUT
= 10mA
T
A
= 25°C
C
OUT
= 10µF
C
OUT
= 47µF
C
OUT
= 22µF
INPUT VOLTAGE (V)
0
OUTPUT VOLTAGE (V)
3.45
3.40
3.35
3.30
3.25
3.20
8
1514 G05
2
4
6
10
V
OUT
= 3.3V
C
OUT
= 10µF
T
A
= 25°C
INPUT VOLTAGE (V)
0
OPERATING CURRENT (µA)
120
100
80
60
40
20
8
1514 G06
2
4
6
10
85°C
–40°C
25°C
V
OUT
= 5V
I
OUT
= 0mA
LTC1514-5
Efficiency vs Input Voltage
INPUT VOLTAGE (V)
0
EFFICIENCY (%)
100
80
60
40
20
8
1514 G07
2
4
6
10
V
OUT
= 3.3V
I
OUT
= 10mA
T
A
= 25°C
INPUT VOLTAGE (V)
2
EFFICIENCY (%)
100
80
60
40
20
10
1514 G08
4
6
8
12
V
OUT
= 5V
I
OUT
= 10mA
T
A
= 25°C
LTC1514-3.3
Efficiency vs Input Voltage
LTC1514-X Shutdown Supply
Current vs Input Voltage
INPUT VOLTAGE (V)
0
SHUTDOWN SUPPLY CURRENT (µA)
25
20
15
10
5
0
8
1514 G09
2
4
6
10
85°C
–40°C
SHDN = 0V
25°C