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LP3965ET-3.3/NOPB PDF预览

LP3965ET-3.3/NOPB

更新时间： 2024-11-16 02:58:43
品牌 Logo 应用领域
德州仪器 - TI 局域网信息通信管理输出元件调节器
页数 文件大小 规格书
34页 4898K
描述
1.5A Fast Ultra Low Dropout Linear Regulators

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LP3965ET-3.3/NOPB 数据手册

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LP3962, LP3965  
www.ti.com  
SNVS066H –MAY 2000–REVISED APRIL 2013  
LP3962/LP3965 1.5A Fast Ultra Low Dropout Linear Regulators  
Check for Samples: LP3962, LP3965  
1
FEATURES  
DESCRIPTION  
The LP3962/LP3965 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 fast to step changes in load  
which makes them suitable for low voltage  
microprocessor applications. The LP3962/LP3965 are  
developed on a CMOS process which allows low  
quiescent current operation independent of output  
load current. This CMOS process also allows the  
LP3962/LP3965 to operate under extremely low  
dropout conditions.  
2
•
•
•
•
•
•
Ultra Low Dropout Voltage  
Low Ground Pin Current  
Load Regulation of 0.04%  
15µA Quiescent Current in Shutdown Mode  
Specified Output Current of 1.5A DC  
Available in SOT-223,SFM/TO-263 and TO-220  
Packages  
•
•
•
Output Voltage Accuracy ± 1.5%  
Error Flag Indicates Output Status (LP3962)  
Sense Option Improves Better Load  
Regulation (LP3965)  
Dropout Voltage: Ultra low dropout voltage; typically  
38mV at 150mA load current and 380mV at 1.5A load  
current.  
•
Extremely Low Output Capacitor  
Requirements  
Ground Pin Current: Typically 5mA at 1.5A load  
current.  
•
•
Overtemperature/Overcurrent Protection  
−40°C to +125°C Junction Temperature Range  
Shutdown Mode: Typically 15µA quiescent current  
when the shutdown pin is pulled low.  
APPLICATIONS  
Error Flag: Error flag goes low when the output  
voltage drops 10% below nominal value (for LP3962).  
•
•
•
•
•
•
•
•
Microprocessor Power Supplies  
GTL, GTL+, BTL, and SSTL Bus Terminators  
Power Supplies for DSPs  
SCSI Terminator  
SENSE: Sense pin improves regulation at remote  
loads. (For LP3965)  
Precision Output Voltage: Multiple output voltage  
options are available ranging from 1.2V to 5.0V and  
adjustable (LP3965), with a specified accuracy of  
±1.5% at room temperature, and ±3.0% over all  
conditions (varying line, load, and temperature).  
Post Regulators  
High Efficiency Linear Regulators  
Battery Chargers  
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 section 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 © 2000–2013, Texas Instruments Incorporated  
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LP3965ET-3.3/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LP3965ET-3.3/LB04 TI

完全替代

 1.5A Fast Ultra Low Dropout Linear Regulators

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