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參數(shù)資料
| 型號(hào)： | L4957D25 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | UP TO 4A ULDO LINEAR REGULATOR |
| 中文描述： | 高達(dá)4A ULDO線性穩(wěn)壓器 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 63K |
| 代理商： | L4957D25 |
*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
Figure3:
MaximumOutputCurrentvs.Junction
Temperature
Vin>2.8V
Tj=125C
Tc=25
°
C
P dmax=40 W
R dson
limit
D C Operating Area
P ower Dissipation Lim it
Current
Lim itation
Tc=70
°
C
P dmax=22 W
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
7
8
(Vin - Vout) [V]
O utput Current [A]
Figure4:
DCOperatingArea
0
10
20
30
40
50
60
70
80
90
10 0
F requ e1 k
R ip p le R ejection [dB ]
1 0
10 0
10 k
100k
V ripp le=3 Vp -p V ripp le= 0 .5V p-p
C in =2 2u F
C o ut= 22 uF
Vo u t=1 .5V
Vinm in= 3V
Io ut= 5 A
Figure5:
RippleRejection vs. Frequency
1.8
6.3
IOUT(A)
V
OUT
(V)
D98IN846A
80% V
OUT
Figure6:
OutputVoltagevs. Output Current.
(V
OUT
= 1.5V)
0
0.2 0.4
0.6 0.8
1
1.2 1.4 1.6 1.8
V = Vin - Vo
2
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Io [A]
m axim um Ron limits
Tj = 100
°
C
Tj = 125
°
C
Tj = 25
°
C
Figure 7:
MaximumOutput Current vs. Drop-Out
Voltage
L4957
4/7
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L4957 | UP TO 4A ULDO LINEAR REGULATOR |
| L4957V25 | UP TO 4A ULDO LINEAR REGULATOR |
| L4957V2.5 | UP TO 4A ULDO LINEAR REGULATOR |
| L4957V1.5 | UP TO 4A ULDO LINEAR REGULATOR |
| L4957V15 | UP TO 4A ULDO LINEAR REGULATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L4957D25TR | 制造商:STMicroelectronics 功能描述: |
| L4957V1.5 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:UP TO 4A ULDO LINEAR REGULATOR |
| L4957V15 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:UP TO 4A ULDO LINEAR REGULATOR |
| L4957V2.5 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:UP TO 4A ULDO LINEAR REGULATOR |
| L4957V25 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:UP TO 4A ULDO LINEAR REGULATOR |
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