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LM27342MYX/NOPB PDF预览

LM27342MYX/NOPB

更新时间： 2024-11-26 00:49:11
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德州仪器 - TI /
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描述
LM27341/LM27342/LM27341-Q1/LM27342-Q1 2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization

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LM27342MYX/NOPB 数据手册

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LM27341, LM27342, LM27341-Q1, LM27342-Q1  
www.ti.com  
SNVS497E –NOVEMBER 2008–REVISED APRIL 2013  
LM27341/LM27342/LM27341-Q1/LM27342-Q1 2 MHz 1.5A/2A Wide Input Range Step-Down  
DC-DC Regulator with Frequency Synchronization  
Check for Samples: LM27341, LM27342, LM27341-Q1, LM27342-Q1  
1
FEATURES  
DESCRIPTION  
The LM27341 and LM27342 regulators are  
monolithic, high frequency, PWM step-down DC-DC  
converters in 10-pin SON and 10-pin MSOP-  
PowerPad packages. They contain all the active  
functions to provide local DC-DC conversion with fast  
transient response and accurate regulation in the  
smallest possible PCB area.  
2
•
Space Saving 3 x 3 mm 10-Pin SON and  
MSOP-PowerPad Packages  
•
•
•
Wide Input Voltage Range: 3V to 20V  
Wide Output Voltage Range: 1V to 18V  
LM27341 Delivers 1.5A Maximum Output  
Current  
With  
a
minimum of external components the  
•
•
•
LM27342 Delivers 2A Maximum Output Current  
High Switching Frequency: 2 MHz  
LM27341 and LM27342 are easy to use. The ability  
to drive 1.5A or 2A loads respectively, with an internal  
150 mΩ NMOS switch results in the best power  
density available. The world-class control circuitry  
allows for on-times as low as 65 ns, thus supporting  
exceptionally high frequency conversion. Switching  
Frequency Synchronization: 1.00 MHz < fSW  
2.35 MHz  
<
•
150 mΩ NMOS Switch with Internal Bootstrap  
Supply  
frequency is internally set to  
2
MHz and  
•
•
•
•
•
70 nA Shutdown Current  
synchronizable from 1 to 2.35 MHz, which allows the  
use of extremely small surface mount inductors and  
chip capacitors. Even though the operating frequency  
is very high, efficiencies up to 90% are easy to  
achieve. External shutdown is included featuring an  
ultra-low shutdown current of 70 nA. The LM27341  
and LM27342 utilize peak current-mode control and  
internal compensation to provide high-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,  
Internal Voltage Reference Accuracy of 1%  
Peak Current-Mode, PWM Operation  
Thermal Shutdown  
LM27341-Q1 and LM27342-Q1 are AEC-Q100  
Grade 1 Qualified and are Manufactured on an  
Automotive Grade Flow  
APPLICATIONS  
•
•
•
•
•
•
•
Local 12V to Vcore Step-Down Converters  
Radio Power Supply  
Core Power in HDDs  
Set-Top Boxes  
thermal  
protection.  
shutdown,  
and  
output  
over-voltage  
Automotive  
USB Powered Devices  
DSL Modems  
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
All 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 © 2008–2013, Texas Instruments Incorporated  
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LM27342MYX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM27342MY/NOPB TI

完全替代

 LM27341/LM27342/LM27341-Q1/LM27342-Q1 2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regul
LM27341MYX/NOPB TI

类似代替

 1.5A - Wide Input Range Buck Regulator with Frequency Synchronization 10-MSOP-PowerPAD -40

与LM27342MYX/NOPB相关器件

型号 品牌 获取价格 描述 数据表
LM27342-Q1 TI

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 		LM27341/LM27342/LM27341-Q1/LM27342-Q1 2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regul
LM27342QMY NSC

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 		2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization
LM27342QMY/NOPB TI

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 		LM27341/LM27342/LM27341-Q1/LM27342-Q1 2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regul
LM27342QMYX NSC

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 		2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization
LM27342QMYX/NOPB TI

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 		LM27341/LM27342/LM27341-Q1/LM27342-Q1 2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regul
LM27342SD NSC

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 		2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization
LM27342SD/NOPB TI

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 		LM27341/LM27342/LM27341-Q1/LM27342-Q1 2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regul
LM27342SDX NSC

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 		2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization
LM27342SDX/NOPB TI

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 		LM27341/LM27342/LM27341-Q1/LM27342-Q1 2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regul
LM2734-Q1 TI

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 		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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