参数资料
型号: LT3083EDF#TRPBF
厂商: Linear Technology
文件页数: 7/28页
文件大小: 0K
描述: IC REG LDO ADJ 3A 12-DFN
标准包装: 2,500
稳压器拓扑结构: 正,可调式
输出电压: 可调至 23V
输入电压: 1.2 V ~ 23 V
电压 - 压降(标准): 1.25V @ 3A
稳压器数量: 1
电流 - 输出: 3A
电流 - 限制(最小): 3A
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 12-WFDFN 裸露焊盘
供应商设备封装: 12-DFN-EP(4x4)
包装: 带卷 (TR)
LT3083
TYPICAL PERFORMANCE CHARACTERISTICS
T A = 25°C, unless otherwise noted.
Load Transient Response
Load Transient Response
150
V IN = 2V
100 V CONTROL = 3V
V OUT = 1V
50 C SET = 0.1μF
0
–50
–100
1.0
0.5
C OUT = 22μF CERAMIC
C OUT = 10μF CERAMIC
?I LOAD = 100mA TO 1A
250
150
50
–50
–150
4
2
0
V IN = 2V
V CONTROL = 3V
V OUT = 1V
C SET = 0.1μF
C OUT = 22μF CERAMIC
?I LOAD = 500mA TO 3A
0
0
20 40 60 80 100 120 140 160 180 200
TIME (μs)
0
20 40 60 80 100 120 140 160 180 200
TIME (μs)
3083 G17
3083 G18
Line Transient Response
Turn-On Response
Turn-On Response
7
6
5
4
3
10
V OUT = 1V
I LOAD = 10mA
C OUT = 10μF CERAMIC
C SET = 0.1μF
6
5
4
3
2
1
0
4
3
2
1
0
1.0
0
–10
–20
0
20 40 60 80 100 120 140 160 180 200
TIME (μs)
1.0
0.5
0
–0.5
0
5
R SET = 20k
C SET = 0
R LOAD = 0.33?
C OUT = 10μF CERAMIC
10 15 20 25 30 35 40 45 50
TIME (μs)
0.5
0
–0.5
0
2
4
6
R SET = 20k
C SET = 0.1μF
R LOAD = 1?
C OUT = 10μF CERAMIC
8 10 12 14 16 18 20
TIME (ms)
3083 G19
3083 G20
3083 G21
80
70
60
50
V CONTROL Pin Current
70
60
50
40
V CONTROL Pin Current
V CONTROL – V OUT = 2V
V IN – V OUT = 1V
T J = –50°C
600
500
400
Residual Output Voltage with
Less Than Minimum Load
V IN = 20V
V IN = 10V
V IN = 5V
40
30
20
10
I LOAD = 3A
I LOAD = 1.5A
DEVICE IN
CURRENT LIMIT
30
20
10
T J = 25°C
T J = 125°C
300
200
100
ADD 1N4148 FOR
R TEST < 1k
SET PIN = 0V
V IN V OUT
R TEST
0
0
2 4 6 8 10 12 14 16
IN-TO-OUT DIFFERENTIAL (V IN – V OUT ) (V)
18
0
0
0.5
1 1.5 2
LOAD CURRENT (A)
2.5
3
0
0
500
1000
R SET (?)
1500
2000
3083 G22
3083 G23
3083 G24
3083fa
7
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