LT121IZ-3.3(RevE) Просмотр технического описания (PDF) - Linear Technology
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LT121IZ-3.3 Datasheet PDF : 16 Pages
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LT1121/LT1121-3.3/LT1121-5
TYPICAL PERFOR A CE CHARACTERISTICS
Ground Pin Current
14
VIN = 3.3V (LT1121-3.3)
12
VIN = 5V (LT1121-5)
VIN = 3.75V (LT1121)
DEVICE IS OPERATING
10 IN DROPOUT
8
TJ = 125°C
6
TJ = 25°C
TJ = –55°C
4
2
0
0 20 40 60 80 100 120 140 160
OUTPUT CURRENT (mA)
1121 G29
Shutdown Pin Threshold
(On-to-Off)
2.0
ILOAD = 1mA
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1121 G16
Shutdown Pin Current
10
VSHDN = 0V
9
8
7
6
5
4
3
2
1
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1121 G15
Reverse Output Current
30
VIN = 0V
VOUT = 5V (LT1121-5)
25 VOUT = 3.3V (LT1121-3.3)
VOUT = 3.8V (LT1121)
20
15
10
5
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1121 G13
Shutdown Pin Input Current
25
20
15
10
5
0
01 2 3 4 5 6 7 8 9
SHUTDOWN PIN VOLTAGE (V)
1121 G28
Current Limit
400
VOUT = 0V
350
300
250
200
150
100
50
0
0 1 2 34 5 6 7
INPUT VOLTAGE (V)
1121 G20
Shutdown Pin Threshold
(Off-to-On)
2.0
1.8
1.6
ILOAD = 150mA
1.4
1.2
1.0
ILOAD = 1mA
0.8
0.6
0.4
0.2
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1121 G17
LT1121
Adjust Pin Bias Current
400
350
300
250
200
150
100
50
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1121 G25
Current Limit
400
VIN = 7V
350 VOUT = 0V
300
250
200
150
100
50
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1121 G19
1121fe
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