参数资料
型号: LT1129MPST-3.3#TRPBF
厂商: Linear Technology
文件页数: 7/16页
文件大小: 0K
描述: IC REG LDO 3.3V .7A SOT223
产品培训模块: More Information on LDOs
标准包装: 2,000
稳压器拓扑结构: 正,固定式
输出电压: 3.3V
输入电压: 4.15 V ~ 30 V
电压 - 压降(标准): 0.45V @ 700mA
稳压器数量: 1
电流 - 输出: 700mA
工作温度: -55°C ~ 125°C
安装类型: 表面贴装
封装/外壳: TO-261-4,TO-261AA
供应商设备封装: SOT-223
包装: 带卷 (TR)
LT1129/LT1129-3.3/LT1129-5
TYPICAL PERFORMANCE CHARACTERISTICS
60
LT1129-3.3
Ground Pin Current
60
LT1129-5
Ground Pin Current
60
LT1129
Ground Pin Current
50
40
30
20
10
T J = 25°C
V OUT = V SENSE
R LOAD = 4.7Ω
I LOAD = 700mA*
R LOAD = 6.6Ω
I LOAD = 500mA*
R LOAD = 11Ω
I LOAD = 300mA*
50
40
30
20
10
T J = 25°C
V OUT = V SENSE
R LOAD = 7.1Ω
I LOAD = 700mA*
R LOAD = 10Ω
I LOAD = 500mA*
R LOAD = 16.6Ω
I LOAD = 300mA*
50
40
30
20
10
T J = 25°C
V OUT = V ADJ
R LOAD = 5.3Ω
I LOAD = 700mA*
R LOAD = 7.5Ω
I LOAD = 500mA*
R LOAD = 12.6Ω
I LOAD = 300mA*
0
0
1
2
* FOR  V OUT = 3.3V
3 4 5 6
7
8
9
10
0
0
1
2
3
*FOR V OUT = 5V
4 5 6
7
8
9
10
0
0
1
2
*FOR V OUT = 3.75V
3 4 5 6 7
8
9
10
70
INPUT VOLTAGE (V)
Ground Pin Current
112935 G13
2.0
INPUT VOLTAGE (V)
Shutdown Pin Threshold
(On-to-Off)
112935 G14
2.0
INPUT VOLTAGE (V)
Shutdown Pin Threshold
(Off-to-On)
112935 G15
60
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
1.8
1.6
1.4
1.2
I LOAD = 1mA
1.8
1.6
1.4
1.2
I LOAD = 700mA
I LOAD = 1mA
30
20
T J = 25°C
1.0
0.8
0.6
1.0
0.8
0.6
10
T J = –50°C
0.4
0.2
0.4
0.2
0
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0
–50
–25
0
25
50
75
100
125
0
–50
–25
0
25
50
75
100
125
10
OUTPUT CURRENT (A)
Shutdown Pin Current
112935 G16
25
TEMPERATURE (°C)
Shutdown Pin Input Current
112935 G17
400
TEMPERATURE (°C)
Adjust Pin Bias Current
112935 G18
9
8
V SHDN = 0V
20
350
300
V ADJ = V OUT = 3.75V
7
6
5
4
3
2
1
15
10
5
250
200
150
100
50
0
–50
–25
0
25
50
75
100
125
0
0
1
2
3
4
5
6
7
8
9
0
–50
–25
0
25
50
75
100
125
TEMPERATURE (°C)
112935 G19
SHUTDOWN PIN VOLTAGE (V)
112935 G20
TEMPERATURE (°C)
112935 G21
112935ff
7
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