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LT1129-5 Datasheet(PDF) 5 Page - Linear Technology

Part # LT1129-5
Description  Micropower Low Dropout Regulators with Shutdown
Download  12 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1129-5 Datasheet(HTML) 5 Page - Linear Technology

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5
LT1129/LT1129-3.3/LT1129-5
CC
HARA TERISTICS
A
TYPICALPERFOR
CE
INPUT VOLTAGE (V)
0
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
8
1129 G20
2
4
6
10
135
79
RLOAD = 75Ω
ILOAD = 50mA*
RLOAD = 375Ω
ILOAD = 10mA*
RLOAD = 38Ω
ILOAD = 100mA*
*For VOUT = 3.75V
TJ = 25°C
VOUT =
VADJ
INPUT VOLTAGE (V)
0
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
8
1129 G19
2
4
6
10
135
79
RLOAD = 100Ω
ILOAD = 50mA*
RLOAD = 500Ω
ILOAD = 10mA*
RLOAD = 50Ω
ILOAD = 100mA*
*For VOUT = 5V
TJ = 25°C
VOUT = VSENSE
LT1129
Ground Pin Current
LT1129-5
Ground Pin Current
LT1129-3.3
Ground Pin Current
INPUT VOLTAGE (V)
0
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
8
1129 G18
2
4
6
10
135
79
RLOAD = 66Ω
ILOAD = 50mA*
RLOAD = 330Ω
ILOAD = 10mA*
RLOAD = 33Ω
ILOAD = 100mA*
TJ = 25°C
VOUT =
VSENSE
*For VOUT = 3.3V
LT1129-3.3
Ground Pin Current
INPUT VOLTAGE (V)
0
60
50
40
30
20
10
0
8
1129 G22
2
4
6
10
13
57
9
RLOAD = 10Ω
ILOAD = 500mA*
RLOAD = 16.6Ω
ILOAD = 300mA*
RLOAD = 7.1Ω
ILOAD = 700mA*
*For VOUT = 5V
TJ = 25°C
VOUT = VSENSE
LT1129-5
Ground Pin Current
INPUT VOLTAGE (V)
0
60
50
40
30
20
10
0
8
1129 G23
2
4
6
10
13
57
9
RLOAD = 7.5Ω
ILOAD = 500mA*
RLOAD = 12.6Ω
ILOAD = 300mA*
RLOAD = 5.3Ω
ILOAD = 700mA*
*For VOUT = 3.75V
TJ = 25°C
VOUT = VADJ
LT1129
Ground Pin Current
Ground Pin Current
OUTPUT CURRENT (A)
0
70
60
50
40
30
20
10
0
0.2
0.4
0.5
1129 G15
0.1
0.3
0.6
0.7
TJ = 25°C
TJ = 125°C
TJ = –50°C
VIN = 3.3V (LT1129-3.3)
VIN = 5V (LT1129-5)
VIN = 3.75V (LT1129)
DEVICE IS OPERATING
IN DROPOUT
TEMPERATURE (°C)
–50
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
50
75
1129 G27
–25
25
100
125
ILOAD = 1mA
Shutdown Pin Threshold
(On-to-Off)
Shutdown Pin Threshold
(Off-to-On)
TEMPERATURE (°C)
–50
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
50
75
1129 G26
–25
25
100
125
ILOAD = 1mA
ILOAD = 700mA
INPUT VOLTAGE (V)
0
60
50
40
30
20
10
0
8
1129 G21
2
4
6
10
13
57
9
RLOAD = 6.6Ω
ILOAD = 500mA*
RLOAD = 11Ω
ILOAD = 300mA*
RLOAD = 4.7Ω
ILOAD = 700mA*
*For VOUT = 3.3V
TJ = 25°C
VOUT = VSENSE


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