Datasheet
LT1129/LT1129-3.3/LT1129-5
6
112935ff
TYPICAL PERFORMANCE CHARACTERISTICS
LT1129-3.3
Quiescent Current
LT1129-5
Quiescent Current
LT1129
Quiescent Current
LT1129-3.3
Output Voltage
LT1129-5
Output Voltage
LT1129
Adjust Pin Voltage
INPUT VOLTAGE (V)
0
QUIESCENT CURRENT (μA)
250
225
200
175
150
125
100
75
50
25
0
8
112935 G06
2
4
6
10
13579
V
SHDN
= 0V
I
LOAD
= 0
R
LOAD
=
∞
V
OUT
= V
ADJ
V
SHDN
= OPEN (HI)
INPUT VOLTAGE (V)
0
QUIESCENT CURRENT (μA)
250
225
200
175
150
125
100
75
50
25
0
8
112935 G05
2
4
6
10
13579
V
SHDN
= 0V
I
LOAD
= 0
R
LOAD
=
∞
V
SHDN
= OPEN (HI)
INPUT VOLTAGE (V)
0
QUIESCENT CURRENT (μA)
250
225
200
175
150
125
100
75
50
25
0
8
112935 G04
2
4
6
10
13579
I
LOAD
= 0
R
LOAD
=
∞
V
SHDN
= 0V
V
SHDN
= OPEN (HI)
TEMPERATURE (°C)
–50
ADJUST PIN VOLTAGE (V)
3.400
3.375
3.350
3.325
3.300
3.275
3.250
3.225
3.200
0
50
75
112935 G07
–25
25
100
125
I
LOAD
= 1mA
TEMPERATURE (°C)
–50
ADJUST PIN VOLTAGE (V)
3.850
3.825
3.800
3.775
3.750
3.725
3.700
3.675
3.650
0
50
75
112935 G09
–25
25
100
125
I
LOAD
= 1mA
TEMPERATURE (°C)
–50
OUTPUT VOLTAGE (V)
5.100
5.075
5.050
5.025
5.000
4.975
4.950
4.925
4.900
0
50
75
112935 G08
–25
25
100
125
I
LOAD
= 1mA
LT1129-3.3
Ground Pin Current
LT1129-5
Ground Pin Current
LT1129
Ground Pin Current
INPUT VOLTAGE (V)
0
GROUND PIN CURRENT (mA)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
8
112935 G12
2
4
6
10
13579
R
LOAD
= 75Ω
I
LOAD
= 50mA*
R
LOAD
= 375Ω
I
LOAD
= 10mA*
R
LOAD
= 38Ω
I
LOAD
= 100mA*
*FOR V
OUT
= 3.75V
T
J
= 25°C
V
OUT
=
V
ADJ
INPUT VOLTAGE (V)
0
GROUND PIN CURRENT (mA)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
8
112935 G11
2
4
6
10
13579
R
LOAD
= 100Ω
I
LOAD
= 50mA*
R
LOAD
= 500Ω
I
LOAD
= 10mA*
R
LOAD
= 50Ω
I
LOAD
= 100mA*
*FOR V
OUT
= 5V
T
J
= 25°C
V
OUT
= V
SENSE
INPUT VOLTAGE (V)
0
GROUND PIN CURRENT (mA)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
8
112935 G10
2
4
6
10
13579
R
LOAD
= 66Ω
I
LOAD
= 50mA*
R
LOAD
= 330Ω
I
LOAD
= 10mA*
R
LOAD
= 33Ω
I
LOAD
= 100mA*
T
J
= 25°C
V
OUT
=
V
SENSE
*FOR V
OUT
= 3.3V