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L4957A PDF预览

L4957A

更新时间: 2024-11-13 22:47:23
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 稳压器
页数 文件大小 规格书
7页 66K
描述
UP TO 5A ULDO LINEAR REGULATOR

L4957A 数据手册

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L4957A  
UP TO 5A ULDO LINEAR REGULATOR  
PRODUCT PREVIEW  
1.5V, 1.8V, 2.5V AND 3.3V FIXED OUTPUT  
VOLTAGE  
MULTIPOWER BCD TECHNOLOGY  
3V TO 14V INPUT VOLTAGE RANGE  
200mRdson TYPICAL @ Tj = 125°C  
0.6V max. DROP-OUT AT 2A  
EXCELLENT LOAD REGULATION  
0.6mAQUIESCENTCURRENT AT ANYLOAD  
SHORT CIRCUIT PROTECTION  
THERMAL SHUTDOWN  
3
1
Versawatt TO-220  
D2PAK  
ORDERING NUMBERS:  
APPLICATIONS  
L4957AV1.5  
L4957AV1.8  
L4957AV2.5  
L4957AV3.3  
L4957AD1.5  
L4957AD1.8  
L4957AD2.5  
L4957AD3.3  
MOTHER BOARDS  
PROCESSOR I/O & SUPPLIES  
LOW VOLTAGE MEMORY & CHIP SET SUP-  
PLIES  
GRAPHIC & SOUND CARDS  
LOW VOLTAGE LOGIC SUPPLIES  
POST REGULATOR FOR SMPS  
plies required by processor, for example they are  
the cost effective and efficient solution for conver-  
sion from 3.3V (rail bus) to 2.5V @ 2.5A or to  
1.5V with high current rating.  
Fast response transient minimise the output ca-  
pacitor value. A minimum of 22µF assures the  
stability in all load conditions.  
DESCRIPTION  
The L4957A devices are Ultra Low Drop Output  
linear regulators with an internal N-channel MOS  
of 200mparticulary suitable for low voltage/low  
dropout applications.  
The on-chip trimming technique offers a tighter  
voltage reference tolerance (with ± 2% including  
line and load variation) beside to ensure a con-  
trolled short circuit current. Thermal shutdown  
provides protection against overload conditions  
that creates excessive junction temperature.  
Operating with a input voltage from 3V to 14V  
they are capable to deliver up to 5A.  
The devices are ideal for use as one of the sup-  
TYPICAL APPLICATION  
VOUT  
3V to 14V  
C1  
IN  
OUT  
1
3
L4957A  
C2  
2
GND  
D00IN1107A  
1/7  
May 2000  
This is preliminary information on a new product now in development. Details are subject to change without notice.  

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