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LT1121ACS8 Datasheet(PDF) 6 Page - Linear Technology

Part # LT1121ACS8
Description  Micropower Low Dropout Regulators with Shutdown
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1121ACS8 Datasheet(HTML) 6 Page - Linear Technology

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6
LT1121/LT1121-3.3/LT1121-5
1121fe
Ground Pin Current
OUTPUT CURRENT (mA)
14
12
10
8
6
4
2
0
40
80
120
1121 G29
20
60
140 160
0
100
TJ = 125°C
TJ = –55°C
TJ = 25°C
VIN = 3.3V (LT1121-3.3)
VIN = 5V (LT1121-5)
VIN = 3.75V (LT1121)
DEVICE IS OPERATING
IN DROPOUT
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
1121 G16
–25
25
100
125
ILOAD = 1mA
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
1121 G17
–25
25
100
125
ILOAD = 1mA
ILOAD = 150mA
TYPICAL PERFOR A CE CHARACTERISTICS
Reverse Output Current
Shutdown Pin Current
TEMPERATURE (
°C)
–50
30
25
20
15
10
5
0
0
50
75
1121 G13
–25
25
100
125
VIN = 0V
VOUT = 5V (LT1121-5)
VOUT = 3.3V (LT1121-3.3)
VOUT = 3.8V (LT1121)
TEMPERATURE (
°C)
–50
400
350
300
250
200
150
100
50
0
0
50
75
1121 G25
–25
25
100
125
TEMPERATURE (
°C)
–50
400
350
300
250
200
150
100
50
0
0
50
75
1121 G19
–25
25
100
125
VIN = 7V
VOUT = 0V
LT1121
Adjust Pin Bias Current
Current Limit
SHUTDOWN PIN VOLTAGE (V)
0
0
5
15
20
25
2
4
59
1121 G28
10
13
6
7
8
Shutdown Pin Input Current
Current Limit
INPUT VOLTAGE (V)
0
400
350
300
250
200
150
100
50
0
2
4
5
1121 G20
1
3
6
7
VOUT = 0V
TEMPERATURE (
°C)
–50
10
9
8
7
6
5
4
3
2
1
0
0
50
75
1121 G15
–25
25
100
125
VSHDN = 0V


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