参数资料
型号: LT3071IUFD#PBF
厂商: Linear Technology
文件页数: 9/28页
文件大小: 0K
描述: IC REG LDO ADJ 5A 28QFN
标准包装: 73
稳压器拓扑结构: 正,可调式
输出电压: 0.8 V ~ 1.8 V
输入电压: 0.95 V ~ 3 V
电压 - 压降(标准): 0.085V @ 5A
稳压器数量: 1
电流 - 输出: 5A
电流 - 限制(最小): 5.1A
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 28-WFQFN 裸露焊盘
供应商设备封装: 28-QFN(4x5)
包装: 管件
LT3071
TYPICAL PERFORMANCE CHARACTERISTICS
Bias Voltage Line Regulation
Bias Voltage Line Regulation
Input Voltage Line Regulation
800
V BIAS = 2.2V TO 3.6V
700 V IN = 1.1V
V OUT = 0.8V
600 I OUT = 10mA
500
400
300
200
100
400
V BIAS = 3.25V TO 3.6V
300 V IN = 2.1V
V OUT = 1.8V
200 I OUT = 10mA
100
0
–100
–200
–300
300
250
200
150
100
50
V BIAS = 3.3V
V IN = 1.05V TO 2.7V
V OUT = 0.8V
I OUT = 10mA
0
–75 –50 –25 0
25 50 75 100 125 150 175
–400
–75 –50 –25 0
25 50 75 100 125 150 175
0
–75 –50 –25 0
25 50 75 100 125 150 175
TEMPERATURE (°C)
Input Voltage Line Regulation
3071 G33
TEMPERATURE (°C)
Output Voltage Start-Up Time
vs C REF/BYP
3071 G34
TEMPERATURE (°C)
3071 G35
Nap Mode Recovery Time vs I OUT
300
250
200
150
100
50
V BIAS = 3.3V
V IN = 2.05V TO 2.7V
V OUT = 1.8V
I OUT = 10mA
20
18
16
14
12
10
8
6
4
2
V BIAS = 2.5V TO 3.3V
I OUT = 10mA
C OUT = 10μF + 4.7μF + 2.2μF
T J = 25°C
SEE APPLICATIONS
INFORMATION FOR
START-UP DETAILS
400
350
300
250
200
150
100
50
V BIAS = 3.3V
V IN = V OUT(NOM) + 300mV
EN = LOW TO HIGH
I OUT = 5A (SET BY A RESISTOR LOAD)
T J = 25°C
V OUT = 1.8V,
C OUT = 117μF
V OUT = 1.2V,
C OUT = 117μF
V OUT = 0.8V,
C OUT = 117μF
0
–75 –50 –25 0
25 50 75 100 125 150 175
0
0
0.1
0.2
0.3
0.4
0.5
0
0
1
2
3
4
5
TEMPERATURE (°C)
Output Noise Spectral Density
3071 G36
REF/BYP CAPACITANCE (μF)
RMS Output Noise
vs Output Current
3071 G37
OUTPUT CURRENT (A)
3071 G38
Output Noise (10Hz to 100kHz)
1.0
0.1
V BIAS = 2.5V
V OUT = 1V
I OUT = 5A
C OUT = 16.9μF
C REF/BYP = 0.01μF
80
70
60
50
40
V IN = V OUT(NOMINAL) + 300mV
V BIAS = 3.3V
C OUT = 16.9μF
V OUT
100μV/DIV
0.01
30
20
0.001
10
100
1k 10k
100k
10
0
0.01
V OUT = 1.8V
V OUT = 1.2V
V OUT = 0.8V
0.1
1
10
V OUT = 1V
I OUT = 5A
C OUT = 16.9μF
1ms/DIV
3071 G41
FREQUENCY (Hz)
3071 G39
OUTPUT CURRENT (A)
3071 G40
3071fb
For more information www.linear.com/3071
9
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