LT1121(RevA) データシートの表示（PDF） - Linear Technology
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LT1121 Datasheet PDF : 12 Pages
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LT1121/LT1121-3.3/LT1121-5
TYPICAL PERFOR A CE CHARACTERISTICS
LT1121-3.3
Ground Pin Current
800
TJ = 25°C
700
600
RLOAD = 130Ω
ILOAD = 25mA*
500
400
RLOAD = 330Ω
ILOAD = 10mA*
300
*FOR VOUT = 3.3V
200
RLOAD = 3.3k
100
ILOAD = 1mA*
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
1121 G10
LT1121-3.3
Ground Pin Current
10
9 TJ = 25°C
8
RLOAD = 22Ω
7
ILOAD = 150mA*
6
5
RLOAD = 33Ω
ILOAD = 100mA*
4
3
RLOAD = 66Ω
2
ILOAD = 50mA*
1
*FOR VOUT = 3.3V
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
1121 G09
Ground Pin Current
14
VIN = 3.3V (LT1121-3.3)
12 VIN = 5V (LT1121-5)
VIN = 3.75V (LT1121)
10
DEVICE IS OPERATING
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
LT1121-5
Ground Pin Current
800
TJ = 25°C
700
600
RLOAD = 200Ω
ILOAD = 25mA*
500
400
RLOAD = 500Ω
ILOAD = 10mA*
300
*FOR VOUT = 5V
200
RLOAD = 5k
100
ILOAD = 1mA*
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
1121 G06
LT1121-5
Ground Pin Current
10
9 TJ = 25°C
8
7
RLOAD = 33Ω
ILOAD = 150mA*
6
5
RLOAD = 50Ω
ILOAD = 100mA*
4
3
RLOAD = 100Ω
2
ILOAD = 50mA*
1
*FOR VOUT = 5V
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
1121 G05
Shutdown Pin Threshold
(On-to-Off)
2.0
1.8 ILOAD = 1mA
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
LT1121
Ground Pin Current
800
TJ = 25°C
700 VOUT = VADJ
600
RLOAD = 150Ω
ILOAD = 25mA*
500
400
RLOAD = 380Ω
ILOAD = 10mA*
300
*FOR VOUT = 3.75V
200
RLOAD = 3.8k
100
ILOAD = 1mA*
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
1121 G08
LT1121
Ground Pin Current
10
9 TJ = 25°C
VOUT = VADJ
8
7
6
RLOAD = 25Ω
ILOAD = 150mA*
5
RLOAD = 38Ω
4
ILOAD = 100mA*
3
2
RLOAD = 75Ω
ILOAD = 50mA*
1
*FOR VOUT = 3.75V
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
1121 G07
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
5
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