Datasheet

LT1121/LT1121-3.3/LT1121-5
5
1121fg
Guaranteed Dropout Voltage Dropout Voltage Quiescent Current
TYPICAL PERFORMANCE CHARACTERISTICS
OUTPUT CURRENT (mA)
DROPOUT VOLTAGE (V)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
40
80
120
1121 G01
20
60
140
160
0
100
= TEST POINTS
T
J
≤ 125°C
T
J
≤ 25°C
TEMPERATURE (°C)
–50
DROPOUT VOLTAGE (V)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
50
75
1121 G02
–25
25
100
125
I
LOAD
= 150mA
I
LOAD
= 50mA
I
LOAD
= 1mA
I
LOAD
= 100mA
TEMPERATURE (°C)
–50
QUIESCENT CURRENT (μA)
50
40
30
20
10
0
0
50
75
1121 G03
–25
25
100
125
V
IN
= 6V
R
LOAD
= ∞
V
SHDN
= OPEN
V
SHDN
= 0V
LT1121-3.3
Quiescent Current
LT1121-5
Quiescent Current
LT1121
Quiescent Current
LT1121-3.3
Output Voltage
LT1121-5
Output Voltage
LT1121
Adjust Pin Voltage
INPUT VOLTAGE (V)
0
QUIESCENT CURRENT (μA)
120
100
80
60
40
20
0
8
1121 G04
2
4
6
10
1 3 5 7 9
V
SHDN
= 0V
T
J
= 25°C
R
LOAD
= ∞
V
SHDN
= OPEN
INPUT VOLTAGE (V)
0
QUIESCENT CURRENT (μA)
120
100
80
60
40
20
0
8
1121 G05
2
4
6
10
1 3 5 7 9
T
J
= 25°C
R
LOAD
= ∞
V
SHDN
= 0V
V
SHDN
= OPEN
INPUT VOLTAGE (V)
0
QUIESCENT CURRENT (μA)
120
100
80
60
40
20
0
8
1121 G06
2
4
6
10
1 3 5 7 9
V
SHDN
= 0V
T
J
= 25°C
R
LOAD
= ∞
V
OUT
= V
ADJ
V
SHDN
= OPEN
TEMPERATURE (°C)
–50
ADJ PIN VOLTAGE (V)
3.83
3.81
3.79
3.77
3.75
3.73
3.71
3.69
3.67
0
50
75
1121 G09
–25
25
100
125
I
OUT
= 1mA
TEMPERATURE (°C)
–50
OUTPUT VOLTAGE (V)
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
0
50
75
1121 G08
–25
25
100
125
I
OUT
= 1mA
TEMPERATURE (°C)
–50
OUTPUT VOLTAGE (V)
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
0
50
75
1121 G07
–25
25
100
125
I
OUT
= 1mA