LT1129 Linear Technology, LT1129 Datasheet - Page 5

• Manufacturer Part Number: LT1129
• Description: Micropower Low Dropout Regulators with Shutdown
• Manufacturer: Linear Technology

TYPICAL PERFOR
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
70
60
50
40
30
20
10
60
50
40
30
20
10
0
0
0
0
LT1129-3.3
Ground Pin Current
0
Ground Pin Current
0
LT1129-3.3
Ground Pin Current
T
V
V
T
V
V
V
V
DEVICE IS OPERATING
IN DROPOUT
J
OUT
SENSE
J
OUT
IN
IN
IN
1
1
= 25°C
0.1
= 25°C
= 3.3V (LT1129-3.3)
= 5V (LT1129-5)
= 3.75V (LT1129)
=
= V
2
2
SENSE
*For V
0.2
OUTPUT CURRENT (A)
3
INPUT VOLTAGE (V)
3
INPUT VOLTAGE (V)
*For V
OUT
4
4
0.3
OUT
T
= 3.3V
5
5
J
0.4
= 25°C
= 3.3V
6
6
I
T
T
I
I
LOAD
R
I
I
LOAD
LOAD
I
R
LOAD
J
R
LOAD
J
LOAD
R
LOAD
R
R
0.5
LOAD
= –50°C
LOAD
7
= 125°C
7
LOAD
LOAD
LOAD
= 100mA*
= 50mA*
= 10mA*
W
= 700mA*
= 500mA*
= 300mA*
= 330
8
8
= 66
= 33
= 4.7
= 6.6
0.6
= 11
1129 G15
A
1129 G18
1129 G21
9
9
U
0.7
10
10
CE
C
HARA TERISTICS
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
60
50
40
30
20
10
0
0
0
–50
LT1129-5
Ground Pin Current
0
0
Shutdown Pin Threshold
(On-to-Off)
LT1129-5
Ground Pin Current
I
T
V
T
V
LOAD
J
J
OUT
OUT
–25
1
1
= 25°C
= 25°C
= V
= V
= 1mA
2
2
C
SENSE
SENSE
*For V
0
TEMPERATURE (°C)
3
INPUT VOLTAGE (V)
3
INPUT VOLTAGE (V)
*For V
4
4
OUT
25
OUT
= 5V
5
5
50
= 5V
6
6
I
I
I
I
LOAD
I
I
LOAD
LOAD
R
LOAD
R
R
R
R
LOAD
LOAD
R
LOAD
75
LOAD
7
LOAD
LOAD
7
LOAD
LT1129/LT1129-3.3/LT1129-5
LOAD
= 100mA*
= 700mA*
= 500mA*
= 300mA*
= 50mA*
= 10mA*
8
8
= 16.6
= 100
= 500
= 50
= 7.1
100
= 10
1129 G27
1129 G22
1129 G19
9
9
125
10
10
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
60
50
40
30
20
10
0
0
0
–50
LT1129
Ground Pin Current
0
0
LT1129
Ground Pin Current
Shutdown Pin Threshold
(Off-to-On)
T
V
T
V
V
J
OUT
J
OUT
ADJ
1
1
–25
= 25°C
= 25°C
= V
=
2
2
ADJ
*For V
0
TEMPERATURE (°C)
3
3
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
*For V
OUT
4
4
25
OUT
= 3.75V
5
5
= 3.75V
50
I
I
LOAD
LOAD
6
6
I
I
I
I
I
R
LOAD
I
LOAD
LOAD
R
LOAD
LOAD
R
LOAD
R
R
R
LOAD
LOAD
75
LOAD
LOAD
LOAD
7
LOAD
7
= 700mA
= 1mA
= 100mA*
= 700mA*
= 500mA*
= 10mA*
= 300mA*
= 50mA*
= 375
8
8
= 12.6
= 5.3
= 38
= 7.5
= 75
100
1129 G26
1129 G20
1129 G23
9
9
5
125
10
10