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參數(shù)資料
| 型號： | L4957 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | UP TO 4A ULDO LINEAR REGULATOR |
| 中文描述： | 高達4A ULDO線性穩(wěn)壓器 |
| 文件頁數(shù)： | 3/7頁 |
| 文件大?。?/td> | 63K |
| 代理商： | L4957 |
L4957 - ELECTRICAL CHARACTERISTICS
(T
j
= 25
°
C, V
IN
= 5V, unless otherwisespecified).
= Specificationsreferred to T
J
from 0
°
Cto +125
°
C.
Symbol
V
IN
Parameter
Test Condition
Min.
3
Typ.
Max.
6.5
Unit
V
Operating Supply Voltage
(1)
Output Voltage (1)
V
O
ForL4957V1.5/D1.5
0.1A < I
O
< 4A; 3V< V
IN
< 6.5V
3V < V
IN
< 6.5V; 0.1A< I
O
< 4A
ForL4957V2.5/D2.5
0.1A < I
O
< 4A; 3V< V
IN
< 6.5V
3V < V
IN
< 6.5V; 0.1A< I
O
< 4A
0.1A < IO < 4A
1.47
1.455
1.5
1.5
1.53
1.545
V
V
2.45
2.425
2.5
2.5
2
200
2.55
2.575
10
300
V
V
V
O
R
DSON
Load regulation (1)
Drain-Source ON
Resistance
Current Limiting
Short Circuit Current
Quiescent Current
Ripple Rejection
mV
m
I
O
90% V
O
V
O
= 0V
0.1A < I
O
< 4A 3V < V
IN
< 6.5V
f = 120Hz, I
O
= 4A
V
IN
= 5V
V
IN
= 2V
PP
5.1
6.3
1.8
7.5
A
A
I
Q
0.5
60
2
mA
dB
75
(1) GND connected to ground.
THERMAL DATA
Symbol
R
th j-case
R
th j-amb
Parameter
TO220
2.5
50
D2PAK
3
60
Unit
°
C/W
°
C/W
°
C
°
C
Thermal Resistance Junction-case
Thermal Resistance Junction-ambient
Thermal Shutdown
Thermal Hysteresis
Max.
Max.
Typ.
Typ.
150
20
PIN FUNCTIONS
Pin N
°
Name
1
2
3
Function
IN
Unregulated input voltage; this pin must be bypassed with a capacitor larger than 10
μ
F.
To connect to Ground to get 1.5V or 2.5V output.
Regulated output voltage. A minimum bypass capacitor of 22
μ
F is required to insure stability.
GND
OUT
-40
-20
0
20
40
60
80
100 120 140 160
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Tj [
°
C]
O
3V < Vin < 6.5V
Iout = 10mA
Figure 1:
Line Regulationvs. Junction
Temperature
0
1
2
3
4
5
-5
-4
-3
-2
-1
0
1
2
3
4
5
Iout [A]
O
Vin = 5V
Tj = 25
°
C
(Pulsed technique has been used)
Vout = 1.5V
Figure2:
LoadRegulation
L4957
3/7
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| L4962A | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L4957A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Up to 5A ULDO linear regulator |
| L4957A_06 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Up to 5A ULDO linear regulator |
| L4957AD1.5 | 功能描述:低壓差穩(wěn)壓器 - LDO 1.5V 5.0A Linear RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| L4957AD1.5TR | 功能描述:低壓差穩(wěn)壓器 - LDO 1.5V 5.0A Linear RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| L4957AD1.8 | 功能描述:低壓差穩(wěn)壓器 - LDO 1.8V 5.0A Linear RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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