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LM27341SD PDF预览

LM27341SD

更新时间： 2024-11-06 05:42:03
品牌 Logo 应用领域
美国国家半导体 - NSC 调节器
页数 文件大小 规格书
30页 715K
描述
2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization

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中文翻译

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LM27341SD 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：HVSON, SOLCC10,.12,20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.33其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 1V TO 18V
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：20 V
最小输入电压：3 V标称输入电压：12 V
JESD-30 代码：S-PDSO-N10长度：3 mm
湿度敏感等级：1功能数量：1
端子数量：10最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：3.7 A
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装等效代码：SOLCC10,.12,20封装形状：SQUARE
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：225
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：BUCK最大切换频率：2300 kHz
温度等级：AUTOMOTIVE端子形式：NO LEAD
端子节距：0.5 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3 mm

LM27341SD 数据手册

 浏览型号LM27341SD的Datasheet PDF文件第2页浏览型号LM27341SD的Datasheet PDF文件第3页浏览型号LM27341SD的Datasheet PDF文件第4页浏览型号LM27341SD的Datasheet PDF文件第5页浏览型号LM27341SD的Datasheet PDF文件第6页浏览型号LM27341SD的Datasheet PDF文件第7页 
December 16, 2008  
LM27341/LM27342  
2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC  
Regulator with Frequency Synchronization  
General Description  
Features  
The LM27341 and LM27342 regulators are monolithic, high  
frequency, PWM step-down DC-DC converters in 10-pin LLP  
and 10-pin eMSOP packages. They contain all the active  
functions to provide local DC-DC conversion with fast tran-  
sient response and accurate regulation in the smallest possi-  
ble PCB area.  
Space saving 3 X 3 mm LLP-10 & eMSOP-10 package  
■
Wide input voltage range  
Wide output voltage range  
3 to 20 V  
1 to 18 V  
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LM27341 delivers 1.5A maximum output current  
LM27342 delivers 2A maximum output current  
High switching frequency  
Frequency synchronization 1.00 MHz < fSW < 2.35 MHz  
150 mΩ NMOS switch with internal bootstrap supply  
70 nA shutdown current  
Internal voltage reference accuracy of 1%  
Peak Current-Mode, PWM operation  
Thermal shutdown  
2 MHz  
With a minimum of external components the 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 cir-  
cuitry allows for on-times as low as 65 ns, thus supporting  
exceptionally high frequency conversion. Switching frequen-  
cy is internally set to 2 MHz and synchronizable from 1 to 2.35  
MHz, which allows the use of extremely small surface mount  
inductors and chip capacitors. Even though the operating fre-  
quency 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 LM27341and LM27342 utilize  
peak current-mode control and internal compensation to pro-  
vide high-performance regulation over a wide range of oper-  
ating conditions. Additional features include internal soft-start  
circuitry to reduce inrush current, pulse-by-pulse current limit,  
thermal shutdown, and output over-voltage protection.  
Applications  
Local 12V to Vcore Step-Down Converters  
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Radio Power Supply  
Core Power in HDDs  
Set-Top Boxes  
Automotive  
USB Powered Devices  
DSL Modems  
Typical Application Circuit  
30005674  
30005676  
Efficiency vs Load Current  
VOUT = 5V, fsw = 2 MHz  
© 2008 National Semiconductor Corporation  
300056  
www.national.com  
1234567...30

中文翻译

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与LM27341SD相关器件

型号 品牌 获取价格 描述 数据表
LM27341SD/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
LM27341SDX NSC

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 		2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization
LM27341SDX/NOPB TI

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 		1.5A - Wide Input Range Buck Regulator with Frequency Synchronization 10-WSON -40 to 125
LM27342 TI

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 		LM27341/LM27342/LM27341-Q1/LM27342-Q1 2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regul
LM27342MY NSC

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 		2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization
LM27342MY/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
LM27342MYX NSC

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 		2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization
LM27342MYX/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
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

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