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LX6431ACDMT PDF预览

LX6431ACDMT

更新时间： 2024-11-10 23:48:55
品牌 Logo 应用领域
美高森美 - MICROSEMI 稳压器
页数 文件大小 规格书
11页 156K
描述
Positive Adjustable Voltage Regulator

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LX6431ACDMT 数据手册

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LX6431/ LX6431A/ LX6431B  
P
RECISION  
P
ROGRAMMABLE  
R
EFERENCES  
T H E I N F I N I T E P O W E R O F I N N O V A T I O N  
P R O D U C T I O N D A T A S H E E T  
D E S C R I P T I O N  
K E Y F E A T U R E S  
■ Unconditionally Stable For All Cathode To  
The LX6431 series precision adjustable  
three terminal shunt voltage regulators are  
pin-to-pin compatible with the industry  
standard TL431, but with significant  
improvements. The LX6431 design has  
eliminated regions of instability common  
to older generation shunt regulator  
products like the TL431. Designs are  
made simpler by eliminating the task of  
insuring capacitive loads, and output  
voltage and cathode currents don't  
combine for unstable operation. The  
capacitor value is chosen simply to give  
the best load transient response without  
the possibility of instability. A lower  
reference input current allows the use of  
higher value reference divider resistors,  
reducing the current drain from batteries  
in portable equipment as well as reducing  
the voltage programming errors due to  
the impedance of the divider network  
(See Product Highlight figure below). In  
addition, the LX6431B has an improved  
initial accuracy of 0.4%, and the output  
voltage is programmable by using two  
external resistors from 2.5V to 36V.  
These devices offer low output  
impedance for improved load regulation.  
The typical output impedance of these  
devices is 100mΩ. The reduced  
reference input bias current and minimum  
operating currents make these devices  
suitable for portable and micropower  
applications.  
Anode Capacitance Values  
■ Reduced Reference Input Current Allowing  
The Use Of Higher Value Divider Resistors  
(0.5µA Max.)  
■ Initial Voltage Reference Accuracy Of 0.4%  
(LX6431B)  
■ Sink Current Capability 0.6mA to 100mA  
■ Typical Output Dynamic Impedance Less  
Than 100mΩ  
■ Adjustable Output Voltage From 2.5V to  
36V  
NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.  
P R O D U C T H I G H L I G H T  
O U TP U T VO LTA G E ERRO R D U E TO IREF  
TYP IC A L PRO G RA M M A BLE VO LTA G E  
R EFEREN C E CIRC U IT  
20  
18  
16  
14  
12  
10  
8
V
VKA  
IN  
R1  
R2  
LX6431  
6
4
2
GND  
0
2.5  
3.75  
5
6.25  
7.5  
8.75  
10  
11.25  
12.5  
13.75  
15  
(VKA) Output Voltage - (V)  
P A C K A G E O R D E R I N F O R M A T I O N  
Plastic SOIC  
8-pin  
Plastic TO-92  
Initial  
T (°C)  
DM  
LP  
A
Tolerance  
3-pin  
LX6431CLP  
2%  
1%  
LX6431CDM  
LX6431ACDM  
LX6431BCDM  
LX6431IDM  
0 to 70  
LX6431ACLP  
LX6431BCLP  
LX6431ILP  
0.4%  
2%  
-40 to 85  
1%  
0.4%  
LX6431AIDM  
LX6431BIDM  
LX6431AILP  
LX6431BILP  
Note: All surface-mount packages are available in Tape & Reel.  
Append the letter "T" to part number. (i.e. LX5212CDPT)  
TO-92 (LP) package also available in ammo-pack.  
L I N F I N I T Y M I C R O E L E C T R O N I C S I N C .  
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570  
Copyright © 1999  
Rev. 1.4 6/ 99  
1
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