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參數(shù)資料
| 型號： | L4955 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 5A ULDO Linear Regulators Family(5A極低壓差線性穩(wěn)壓器) |
| 中文描述： | 5A條ULDO線性穩(wěn)壓器系列（5A條極低壓差線性穩(wěn)壓器） |
| 文件頁數(shù)： | 12/15頁 |
| 文件大?。?/td> | 162K |
| 代理商： | L4955 |
L4955V12
0
2.5
5
7.5
10
12.5
0
1
2
3
4
5
6
7
8
(Vin - Vout) [V]
O utput Curre nt [A]
DC Operating Area
Current Limitation
Tc = 25
°
C
Pdm ax = 40 W
R dson
limit
T c = 70
°
C
P dmax = 22 W
Pow er Dis sipa tion Limit
Vout = 12V
Tj = 1 25
°
C
Figure 35:
DCoperatingarea.
-40
0
40
80
120
160
11.75
11.875
12
12.125
12.25
Tj [
°
C]
Vout [V]
Vin = 15V
Iout = 10mA
Figure36:
OutputVoltageStability vs. Junction
Temperature.
0
1
2
3
4
5
-20
-15
-10
-5
0
5
10
15
20
Iout [A]
O
Vin = 15V
Tj = 25
°
C
(Pulsed tecnique has been used)
Figure 37:
Load Regulation
-40
-20
0
20
40
60
80
100
120
140
160
0
2
4
6
8
10
12
14
16
18
20
Tj [
°
C]
O
13.5V < Vin < 22V
Iout = 10mA
Figure38:
Line regulationvs. JunctionTempera-
ture.
-40
-2 0
0
20
4 0
6 0
8 0
10 0
1 20
14 0
1 60
0
0 .25
0.5
0 .75
1
1 .25
1.5
1 .75
2
2 .25
2.5
2 .75
3
T j [
°
C ]
Iq [m A]
V in = 1 5 V
Iout = 10m A
to 5A
Figure 39:
QuiescentCurrent vs. Temperature.
*Pulsed tecnique has been used
-40 -20
0
20
40
60
80
100 120 140 160
0
1
2
3
4
5
6
7
8
9
10
Tj [
°
C]
Output Current [A]
(Vin-Vout) > 2V
pin 2 = GND
Figure40:
MaximumOutputCurrentvs.Junction
Temperaturewithinternalcurrentlimiting
L4955
12/15
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