LT1129IS8-PBF 查看數據表（PDF） - Linear Technology
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LT1129IS8-PBF Datasheet PDF : 16 Pages
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LT1129/LT1129-3.3/LT1129-5
TYPICAL PERFORMANCE CHARACTERISTICS
LT1129-3.3
Ground Pin Current
60
TJ = 25°C
VOUT = VSENSE
50
40
RLOAD = 4.7Ω
ILOAD = 700mA*
30
RLOAD = 6.6Ω
ILOAD = 500mA*
20
RLOAD = 11Ω
10
ILOAD = 300mA*
*FOR VOUT = 3.3V
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
112935 G13
Ground Pin Current
70
VIN = 3.3V (LT1129-3.3)
60 VIN = 5V (LT1129-5)
VIN = 3.75V (LT1129)
50
DEVICE IS OPERATING
IN DROPOUT
TJ = 125°C
40
TJ = 25°C
30
20
TJ = –50°C
10
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
OUTPUT CURRENT (A)
112935 G16
LT1129-5
Ground Pin Current
60
TJ = 25°C
VOUT = VSENSE
50
40
RLOAD = 7.1Ω
ILOAD = 700mA*
30
RLOAD = 10Ω
ILOAD = 500mA*
20
RLOAD = 16.6Ω
10
ILOAD = 300mA*
*FOR VOUT = 5V
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
112935 G14
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
112935 G17
LT1129
Ground Pin Current
60
TJ = 25°C
VOUT = VADJ
50
RLOAD = 5.3Ω
40
ILOAD = 700mA*
30
RLOAD = 7.5Ω
ILOAD = 500mA*
20
RLOAD = 12.6Ω
10
ILOAD = 300mA*
*FOR VOUT = 3.75V
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
112935 G15
Shutdown Pin Threshold
(Off-to-On)
2.0
1.8
1.6
ILOAD = 700mA
1.4
1.2
ILOAD = 1mA
1.0
0.8
0.6
0.4
0.2
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
112935 G18
Shutdown Pin Current
10
9 VSHDN = 0V
8
7
6
5
4
3
2
1
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
112935 G19
Shutdown Pin Input Current
25
20
15
10
5
0
01 2 3 4 5 6 7 8 9
SHUTDOWN PIN VOLTAGE (V)
112935 G20
Adjust Pin Bias Current
400
VADJ = VOUT = 3.75V
350
300
250
200
150
100
50
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
112935 G21
112935ff
7
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