LT1129/LT1129-3.3/LT1129-5
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Regulated Output Voltage
(Notes 4, 12)
LT1129-3.3
V
= 3.8V, I
= 1mA, T = 25°C
3.250
3.200
3.300
3.300
3.350
3.400
V
V
IN
OUT
J
4.3V < V < 20V, 1mA < I
< 700mA
●
●
IN
OUT
LT1129-5
V
= 5.5V, I
IN
= 1mA, T = 25°C
4.925
4.850
5.000
5.000
5.075
5.150
V
V
IN
OUT
J
6V < V < 20V, 1mA < I
< 700mA
OUT
LT1129 (Note 5)
V
= 4.3V, I
= 1mA, T = 25°C
3.695
3.640
3.750
3.750
3.805
3.860
V
V
IN
OUT
J
4.8V < V < 20V, 1mA < I
< 700mA
●
●
●
●
IN
OUT
Line Regulation (Note 12)
Load Regulation (Note 12)
LT1129-3.3
LT1129-5
∆V = 4.8V to 20V, I
= 1mA
= 1mA
= 1mA
1.5
1.5
1.5
10
10
10
mV
mV
mV
IN
OUT
OUT
OUT
∆V = 5.5V to 20V, I
IN
LT1129 (Note 5)
LT1129-3.3
∆V = 4.3V to 20V, I
IN
∆I
∆I
= 1mA to 700mA, T = 25°C
= 1mA to 700mA
6
15
20
30
mV
mV
LOAD
LOAD
J
●
●
●
●
●
●
LT1129-5
∆I
∆I
= 1mA to 700mA, T = 25°C
= 1mA to 700mA
6
20
20
30
mV
mV
LOAD
LOAD
J
LT1129 (Note 5)
∆I
∆I
= 1mA to 700mA, T = 25°C
= 1mA to 700mA
6
15
20
30
mV
mV
LOAD
LOAD
J
Dropout Voltage
(Note 6)
I
I
= 10mA, T = 25°C
= 10mA
0.13
0.25
0.37
0.45
0.20
0.25
V
V
LOAD
LOAD
J
I
I
= 100mA, T = 25°C
= 100mA
0.35
0.45
V
V
LOAD
LOAD
J
I
I
= 500mA, T = 25°C
= 500mA
0.45
0.60
V
V
LOAD
LOAD
J
I
I
= 700mA, T = 25°C
= 700mA
0.55
0.70
V
V
LOAD
LOAD
J
●
●
●
●
●
●
●
Ground Pin Current
(Note 7)
I
I
I
I
I
I
= 0mA
50
310
2.0
10
70
450
3.5
20
µA
µA
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
= 10mA
= 100mA
= 300mA
= 500mA
= 700mA
mA
mA
mA
mA
nA
25
45
50
90
Adjust Pin Bias Current (Notes 5, 8) T = 25°C
150
300
2.8
J
Shutdown Threshold
V
V
= Off to On
= On to Off
●
●
1.2
0.75
V
V
OUT
OUT
0.25
52
Shutdown Pin Current (Note 9)
V
V
= 0V
●
●
6
10
25
µA
µA
SHDN
Quiescent Current in Shutdown
(Note 10)
= 6V, V
= 0V
SHDN
15
IN
Ripple Rejection
V
– V
= 1V (Avg), V
= 0.5V ,
P-P
64
dB
IN
OUT
RIPPLE
f
= 120Hz, I = 0.7A, T = 25°C
LOAD J
RIPPLE
Current Limit
V
V
– V
= 7V, T = 25°C
1.2
1.6
1.0
A
IN
IN
OUT
J
Input Reverse Leakage Current
Reverse Output Current (Note 11)
= –20V, V
= 0V
●
mA
OUT
LT1129-3.3
LT1129-5
LT1129 (Note 5)
V
V
V
= 3.3V, V = 0V
16
16
16
25
25
25
µA
µA
µA
OUT
OUT
OUT
IN
= 5V, V = 0V
IN
= 3.8V, V = 0V
IN
112935fc
3
Linear Systems [ Linear Systems ]
