lt1129cst-5-pbf Linear Technology Corporation, lt1129cst-5-pbf Datasheet - Page 6

• Manufacturer Part Number: lt1129cst-5-pbf
• Description: 700ma Micropower Low Dropout Regulator With Shutdown
• Manufacturer: Linear Technology Corporation

LT1129/LT1129-3.3/LT1129-5
6
TYPICAL PERFOR A CE CHARACTERISTICS
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
70
60
50
40
30
20
10
0
0
0
0
0
LT1129-3.3
Ground Pin Current
0
Ground Pin Current
LT1129-3.3
Ground Pin Current
T
V
T
V
V
V
V
V
DEVICE IS OPERATING
IN DROPOUT
J
OUT
J
OUT
SENSE
IN
IN
IN
1
1
= 25°C
= 25°C
0.1
= 3.3V (LT1129-3.3)
= 5V (LT1129-5)
= 3.75V (LT1129)
= V
=
2
2
SENSE
0.2
OUTPUT CURRENT (A)
*For V
3
INPUT VOLTAGE (V)
3
INPUT VOLTAGE (V)
*For V
4
0.3
OUT
4
OUT
T
5
= 3.3V
5
J
0.4
= 3.3V
= 25°C
6
6
I
T
T
I
I
I
I
I
LOAD
LOAD
R
LOAD
LOAD
J
LOAD
R
LOAD
J
R
R
R
R
LOAD
0.5
7
= –50°C
LOAD
= 125°C
LOAD
LOAD
LOAD
7
LOAD
W
= 700mA*
= 100mA*
= 500mA*
= 10mA*
= 300mA*
= 50mA*
8
= 330Ω
8
= 4.7Ω
= 66Ω
= 6.6Ω
= 33Ω
= 11Ω
0.6
1129 G21
1129 G15
9
1129 G18
9
U
0.7
10
10
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
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
–50
0
0
LT1129-5
Ground Pin Current
0
LT1129-5
Ground Pin Current
Shutdown Pin Threshold
(On-to-Off)
T
V
I
T
V
LOAD
J
OUT
J
OUT
1
–25
= 25°C
1
= 25°C
= V
= 1mA
= V
2
2
SENSE
SENSE
*For V
0
TEMPERATURE (°C)
3
INPUT VOLTAGE (V)
3
INPUT VOLTAGE (V)
*For V
4
25
4
OUT
OUT
5
= 5V
5
50
= 5V
6
6
I
I
I
I
R
LOAD
LOAD
LOAD
LOAD
R
I
I
R
R
R
R
LOAD
LOAD
LOAD
7
75
LOAD
LOAD
LOAD
LOAD
LOAD
7
= 700mA*
= 500mA*
= 300mA*
= 100mA*
8
= 50mA*
= 10mA*
= 16.6Ω
8
= 7.1Ω
= 50Ω
= 100Ω
= 500Ω
= 10Ω
100
1129 G22
1129 G27
9
1129 G19
9
125
10
10
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
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
–50
0
0
LT1129
Ground Pin Current
0
LT1129
Ground Pin Current
Shutdown Pin Threshold
(Off-to-On)
T
V
T
V
V
J
OUT
J
OUT
ADJ
1
–25
= 25°C
1
= 25°C
= V
=
2
2
ADJ
*For V
0
3
INPUT VOLTAGE (V)
TEMPERATURE (°C)
*For V
3
INPUT VOLTAGE (V)
OUT
4
25
4
OUT
= 3.75V
5
5
= 3.75V
50
I
I
6
LOAD
LOAD
6
I
I
I
I
LOAD
LOAD
R
LOAD
I
R
R
R
LOAD
I
LOAD
R
LOAD
R
LOAD
LOAD
LOAD
LOAD
7
75
LOAD
7
LOAD
= 700mA
= 1mA
= 700mA*
= 500mA*
= 300mA*
= 100mA*
= 10mA*
= 50mA*
8
= 12.6Ω
= 375Ω
= 5.3Ω
= 7.5Ω
8
= 38Ω
100
= 75Ω
112935fd
1129 G23
1129 G26
9
1129 G20
9
125
10
10