LTC1503-1.8/LTC1503-2
TYPICAL PERFOR A CE CHARACTERISTICS
LTC1503-X Input Operating
Current vs Input Voltage
50
I
OUT
= 0mA
10
INPUT SHUTDOWN CURRENT (µA)
T
A
= –40°C
5
T
A
= 25°C
T
A
= 85°C
OUTPUT VOLTAGE (V)
INPUT CURRENT (µA)
40
30
T
A
= 25°C
20
T
A
= –40°C
T
A
= 85°C
10
2
3
4
INPUT VOLTAGE (V)
LTC1503-2
Output Voltage vs Input Voltage
2.10
I
OUT
= 50mA
2.05
EFFICIENCY (%)
OUTPUT VOLTAGE (V)
T
A
= –40°C
2.00
T
A
= 85°C
T
A
= 25°C
1.95
I
OUT
= 1mA
60
“IDEAL”
LDO
40
EFFICIENCY (%)
1.90
2
3
4
INPUT VOLTAGE (V)
5
LTC1503-2
Efficiency vs Output Current
100
T
A
= 25°C
1.84
80
OUTPUT VOLTAGE (V)
EFFICIENCY (%)
T
A
= –40°C
1.80
T
A
= 85°C
1.78
T
A
= 25°C
OUTPUT VOLTAGE (V)
60
40
V
IN
= 5V
V
IN
= 4.4V
V
IN
= 3.6V
V
IN
= 3V
V
IN
= 2.4V
0.1
10
100
1
OUTPUT CURRENT (mA)
1000
20
0
0.01
U W
5
1503 G01
LTC1503-X Input Shutdown
Current vs Input Voltage
1.90
V
OUT
= 0V
V
SHDN
/SS = 0V
7.5
1.85
LTC1503-1.8
Output Voltage vs Input Voltage
I
OUT
= 50mA
T
A
= –40°C
1.80
T
A
= 25°C
1.75
T
A
= 85°C
2.5
6
0
1.70
2
3
4
INPUT VOLTAGE (V)
1503-1.8/2 TA02
5
6
2
3
4
INPUT VOLTAGE (V)
5
6
1503-1.8/2 G03
LTC1503-1.8
Efficiency vs Input Voltage
100
T
A
= 25°C
100
LTC1503-1.8
Efficiency vs Output Current
T
A
= 25°C
I
OUT
= 100mA
80
80
60
40
V
IN
= 5V
V
IN
= 4.4V
V
IN
= 3.6V
V
IN
= 3V
V
IN
= 2.4V
0.1
10
100
1
OUTPUT CURRENT (mA)
1000
20
6
1503 G03
20
2
3
4
INPUT VOLTAGE (V)
5
6
1503-1.8/2 G05
0
0.01
1503-1.8/2 G06
LTC1503-1.8
Output Voltage vs Output Current
V
IN
= 3.3V
LTC1503-2
Output Voltage vs Output Current
2.04
V
IN
= 3.3V
1.82
2.02
T
A
= –40°C
2.00
T
A
= 85°C
1.98
T
A
= 25°C
1.76
1.96
1.74
0.01
0.1
10
100
1
OUTPUT CURRENT (mA)
1000
1.94
0.01
0.1
10
100
1
OUTPUT CURRENT (mA)
1000
1503-1.8/2 G07
1503-1.8/2 G08
1503-1.8/2 G09
3
LINER [ LINEAR TECHNOLOGY ]
