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LT1129 参数 Datasheet PDF下载

LT1129图片预览
型号: LT1129
PDF下载: 下载PDF文件 查看货源
内容描述: 微功率低压差稳压器,带有关断 [Micropower Low Dropout Regulators with Shutdown]
分类和应用: 稳压器
文件页数/大小: 16 页 / 175 K
品牌: LINEAR [ LINEAR INTEGRATED SYSTEMS ]
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LT1129/LT1129-3.3/LT1129-5
TYPICAL PERFOR A CE CHARACTERISTICS
LT1129-3.3
Ground Pin Current
2.0
1.8
T
J
= 25°C
V
OUT
=
V
SENSE
R
LOAD
= 33Ω
I
LOAD
= 100mA*
2.0
1.8
T
J
= 25°C
V
OUT
= V
SENSE
R
LOAD
= 50Ω
I
LOAD
= 100mA*
GROUND PIN CURRENT (mA)
GROUND PIN CURRENT (mA)
GROUND PIN CURRENT (mA)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
R
LOAD
= 66Ω
I
LOAD
= 50mA*
R
LOAD
= 330Ω
I
LOAD
= 10mA*
*For V
OUT
= 3.3V
1
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
10
LT1129-3.3
Ground Pin Current
60
50
40
30
R
LOAD
= 6.6Ω
I
LOAD
= 500mA*
20
10
0
R
LOAD
= 11Ω
I
LOAD
= 300mA*
*For V
OUT
= 3.3V
0
1
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
10
T
J
= 25°C
V
OUT
= V
SENSE
GROUND PIN CURRENT (mA)
GROUND PIN CURRENT (mA)
GROUND PIN CURRENT (mA)
R
LOAD
= 4.7Ω
I
LOAD
= 700mA*
Ground Pin Current
70
60
GROUND PIN CURRENT (mA)
SHUTDOWN THRESHOLD (V)
SHUTDOWN THRESHOLD (V)
50
40
V
IN
= 3.3V (LT1129-3.3)
V
IN
= 5V (LT1129-5)
V
IN
= 3.75V (LT1129)
DEVICE IS OPERATING
IN DROPOUT
T
J
= 125°C
T
J
= 25°C
30
20
T
J
= –50°C
10
0
0
0.1
0.2 0.3 0.4
0.5
OUTPUT CURRENT (A)
0.6
0.7
6
U W
1129 G18
1129 G21
LT1129-5
Ground Pin Current
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
8
9
10
LT1129
Ground Pin Current
T
J
= 25°C
V
OUT
=
V
ADJ
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
1
2
*For V
OUT
= 5V
R
LOAD
= 38Ω
I
LOAD
= 100mA*
R
LOAD
= 100Ω
I
LOAD
= 50mA*
R
LOAD
= 75Ω
I
LOAD
= 50mA*
R
LOAD
= 500Ω
I
LOAD
= 10mA*
R
LOAD
= 375Ω
I
LOAD
= 10mA*
*For V
OUT
= 3.75V
0
1
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
10
3 4 5 6 7
INPUT VOLTAGE (V)
0
1129 G19
1129 G20
LT1129-5
Ground Pin Current
60
50
40
30
20
10
0
R
LOAD
= 16.6Ω
I
LOAD
= 300mA*
*For V
OUT
= 5V
0
1
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
10
T
J
= 25°C
V
OUT
= V
SENSE
60
50
40
30
20
10
0
LT1129
Ground Pin Current
T
J
= 25°C
V
OUT
= V
ADJ
R
LOAD
= 5.3Ω
I
LOAD
= 700mA*
R
LOAD
= 7.1Ω
I
LOAD
= 700mA*
R
LOAD
= 10Ω
I
LOAD
= 500mA*
R
LOAD
= 7.5Ω
I
LOAD
= 500mA*
R
LOAD
= 12.6Ω
I
LOAD
= 300mA*
*For V
OUT
= 3.75V
0
1
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
10
1129 G22
1129 G23
Shutdown Pin Threshold
(On-to-Off)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–50
–25
50
25
0
75
TEMPERATURE (°C)
100
125
I
LOAD
= 1mA
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
Shutdown Pin Threshold
(Off-to-On)
I
LOAD
= 700mA
I
LOAD
= 1mA
0
–50
–25
50
25
0
75
TEMPERATURE (°C)
100
125
1129 G15
1129 G27
1129 G26
112935fc