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LT1129 Datasheet(PDF) 6 Page - Linear Technology

Part # LT1129
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 Datasheet(HTML) 6 Page - Linear Technology

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6
LT1129/LT1129-3.3/LT1129-5
CC
HARA TERISTICS
A
TYPICALPERFOR
CE
FREQUENCY (Hz)
100
90
80
70
60
50
40
30
20
10
0
10
1k
10k
1M
1129 G01
100
100k
IOUT = 500mA
VIN = 6V + 50mVRMS RIPPLE
COUT = 47µF
SOLID
TANTALUM
COUT = 3.3µF
SOLID
TANTALUM
Shutdown Pin Current
SHUTDOWN PIN VOLTAGE (V)
0
0
5
15
20
25
2
4
59
1129 G24
10
13
6
7
8
Shutdown Pin Input Current
Adjust Pin Bias Current
Current Limit
TEMPERATURE (°C)
–50
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
50
75
1129 G08
–25
25
100
125
VIN = 7V
VOUT = 0V
Current Limit
INPUT VOLTAGE (V)
0
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
2
4
5
1129 G07
1
3
6
7
VOUT = 0V
Reverse Output Current
Reverse Output Current
Ripple Rejection
Ripple Rejection
TEMPERATURE (°C)
–50
70
68
66
64
62
60
58
56
0
50
75
1129 G03
–25
25
100
125
(VIN – VOUT)AVG = 1V
VRIPPLE = 0.5VP-P
IL = 0.7A
TEMPERATURE (°C)
–50
30
25
20
15
10
5
0
0
50
75
1129 G29
–25
25
100
125
VIN = 0V
VOUT = VSENSE = 5V (LT1129-5)
VOUT = VSENSE = 3.3V (LT1129-3.3)
VOUT = VADJ = 3.75V (LT1129)
TEMPERATURE (°C)
–50
400
350
300
250
200
150
100
50
0
0
50
75
1129 G28
–25
25
100
125
VADJ = VOUT = 3.75V
OUTPUT VOLTAGE (V)
0
100
90
80
70
60
50
40
30
20
10
0
8
1129 G30
2
4
6
10
13
57
9
TJ = 25°C, VIN = 0V
VOUT = VSENSE
(LT1129-3.3/LT1129-5)
VOUT = VADJ (LT1129)
CURRENT FLOWS
INTO DEVICE
LT1129-3.3
LT1129
LT1129-5
TEMPERATURE (°C)
–50
10
9
8
7
6
5
4
3
2
1
0
0
50
75
1129 G25
–25
25
100
125
VSHDN = 0V


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