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LP3872EMP-3.3 PDF预览

LP3872EMP-3.3

更新时间： 2024-11-23 12:19:23
品牌 Logo 应用领域
德州仪器 - TI 稳压器
页数 文件大小 规格书
25页 2750K
描述
LP3872/LP3875 1.5A Fast Ultra Low Dropout Linear Regulators

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LP3872EMP-3.3 数据手册

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LP3872, LP3875  
www.ti.com  
SNVS227F –FEBRUARY 2003–REVISED APRIL 2013  
LP3872/LP3875 1.5A Fast Ultra Low Dropout Linear Regulators  
Check for Samples: LP3872, LP3875  
1
FEATURES  
DESCRIPTION  
The LP3872/LP3875 series of fast ultra low-dropout  
linear regulators operate from a +2.5V to +7.0V input  
supply. Wide range of preset output voltage options  
are available. These ultra low dropout linear  
regulators respond very quickly to step changes in  
load, which makes them suitable for low voltage  
microprocessor applications. The LP3872/LP3875 are  
developed on a CMOS process which allows low  
quiescent current operation independent of output  
load current. This CMOS process also allows the  
LP3872/LP3875 to operate under extremely low  
dropout conditions.  
2
•
•
•
•
•
•
Ultra Low Dropout Voltage  
Low Ground Pin Current  
Load Regulation of 0.06%  
10nA Quiescent Current in Shutdown Mode  
Ensured Output Current of 1.5A DC  
Available in DDPAK/TO-263, TO-220 and  
SOT-223 Packages  
•
•
•
•
•
•
Output Voltage Accuracy ± 1.5%  
Error Flag Indicates Output Status  
Sense Option Improves Load Regulation  
Minimum Output Capacitor Requirements  
Overtemperature/Overcurrent Protection  
−40°C to +125°C Junction Temperature Range  
Dropout Voltage: Ultra low dropout voltage; typically  
38mV at 150mA load current and 380mV at 1.5A load  
current.  
Ground Pin Current: Typically 6mA at 1.5A load  
current.  
APPLICATIONS  
Shutdown Mode: Typically 10nA quiescent current  
when the shutdown pin is pulled low.  
•
•
•
•
•
•
•
•
Microprocessor Power Supplies  
GTL, GTL+, BTL, and SSTL Bus Terminators  
Power Supplies for DSPs  
SCSI Terminator  
Error Flag: Error flag goes low when the output  
voltage drops 10% below nominal value.  
SENSE: Sense pin improves regulation at remote  
loads.  
Post Regulators  
High Efficiency Linear Regulators  
Battery Chargers  
Precision Output Voltage: Multiple output voltage  
options are available ranging from 1.8V to 5.0V with a  
specified accuracy of ±1.5% at room temperature,  
and ±3.0% over all conditions (varying line, load, and  
temperature).  
Other Battery Powered Applications  
TYPICAL APPLICATION CIRCUITS  
*SD and ERROR pins must be pulled high through a 10kΩ pull-up resistor. Connect the ERROR pin to ground if this  
function is not used. See application hints for more information.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2003–2013, Texas Instruments Incorporated  
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LP3872EMP-3.3 替代型号

型号 品牌 替代类型 描述 数据表
LP3872EMP-3.3/NOPB TI

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