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LM2734-Q1 PDF预览

LM2734-Q1

更新时间： 2024-09-17 11:06:39
品牌 Logo 应用领域
德州仪器 - TI 开关控制器开关式稳压器开关式控制器电源电路转换器开关式稳压器或控制器
页数 文件大小 规格书
31页 1184K
描述
具有轻负载效率的 3V 至 20V 输入电压、1A、汽车类降压转换器

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中文翻译

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LM2734-Q1 数据手册

 浏览型号LM2734-Q1的Datasheet PDF文件第2页浏览型号LM2734-Q1的Datasheet PDF文件第3页浏览型号LM2734-Q1的Datasheet PDF文件第4页浏览型号LM2734-Q1的Datasheet PDF文件第5页浏览型号LM2734-Q1的Datasheet PDF文件第6页浏览型号LM2734-Q1的Datasheet PDF文件第7页 
LM2734  
www.ti.com  
SNVS288I –SEPTEMBER 2004–REVISED APRIIL 2013  
LM2734 Thin SOT 1A Load Step-Down DC-DC Regulator  
Check for Samples: LM2734  
1
FEATURES  
DESCRIPTION  
The LM2734 regulator is a monolithic, high frequency,  
PWM step-down DC/DC converter in a 6-pin Thin  
SOT package. It provides all the active functions to  
provide local DC/DC conversion with fast transient  
response and accurate regulation in the smallest  
possible PCB area.  
234  
•
Thin SOT-6 Package  
•
3.0V to 20V Input Voltage Range  
0.8V to 18V Output Voltage Range  
1A Output Current  
•
•
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550kHz (LM2734Y) and 1.6MHz (LM2734X)  
Switching Frequencies  
With a minimum of external components and online  
design support through WEBENCH®, the LM2734 is  
easy to use. The ability to drive 1A loads with an  
internal 300mΩ NMOS switch using state-of-the-art  
0.5µm BiCMOS technology results in the best power  
density available. The world class control circuitry  
allows for on-times as low as 13ns, thus supporting  
exceptionally high frequency conversion over the  
entire 3V to 20V input operating range down to the  
minimum output voltage of 0.8V. Switching frequency  
is internally set to 550kHz (LM2734Y) or 1.6MHz  
(LM2734X), allowing the use of extremely small  
surface mount inductors and chip capacitors. Even  
though the operating frequencies are very high,  
efficiencies up to 90% are easy to achieve. External  
shutdown is included, featuring an ultra-low stand-by  
current of 30nA. The LM2734 utilizes current-mode  
control and internal compensation to provide high-  
•
•
•
•
•
•
•
•
300mΩ NMOS Switch  
30nA Shutdown Current  
0.8V, 2% Internal Voltage Reference  
Internal Soft-Start  
Current-Mode, PWM Operation  
WEBENCH® Online Design Tool  
Thermal Shutdown  
LM2734XQ/LM2734YQ are AEC-Q100 Grade 1  
Qualified and are Manufactured on an  
Automotive Grade Flow  
APPLICATIONS  
•
•
•
•
•
•
•
•
Local Point of Load Regulation  
Core Power in HDDs  
Set-Top Boxes  
performance regulation over  
a wide range of  
operating conditions. Additional features include  
internal soft-start circuitry to reduce inrush current,  
pulse-by-pulse current limit, thermal shutdown, and  
output over-voltage protection.  
Battery Powered Devices  
USB Powered Devices  
DSL Modems  
Notebook Computers  
Automotive  
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.  
2
3
4
WEBENCH is a registered trademark of Texas Instruments, Inc..  
WEBENCH is a registered trademark of Texas Instruments.  
All other trademarks are the property of their respective owners.  
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 © 2004–2013, Texas Instruments Incorporated  
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LM2734-Q1 替代型号

型号 品牌 替代类型 描述 数据表
LM2734Z TI

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