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LM2672M-12 PDF预览

LM2672M-12

更新时间： 2024-09-28 22:21:59
品牌 Logo 应用领域
美国国家半导体 - NSC 转换器稳压器
页数 文件大小 规格书
25页 890K
描述
SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator with Features

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中文翻译

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LM2672M-12 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：0.150 INCH, PLASTIC, SO-8Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：7.64模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：40 V最小输入电压：6.5 V
标称输入电压：24 VJESD-30 代码：R-PDSO-G8
JESD-609代码：e0长度：4.9 mm
湿度敏感等级：1功能数量：1
端子数量：8最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：2.2 A
标称输出电压：12 V封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP8,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：235认证状态：Not Qualified
座面最大高度：1.75 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：275 kHz技术：DMOS
温度等级：AUTOMOTIVE端子面层：Tin/Lead (Sn/Pb)
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
宽度：3.9 mmBase Number Matches：1

LM2672M-12 数据手册

 浏览型号LM2672M-12的Datasheet PDF文件第2页浏览型号LM2672M-12的Datasheet PDF文件第3页浏览型号LM2672M-12的Datasheet PDF文件第4页浏览型号LM2672M-12的Datasheet PDF文件第5页浏览型号LM2672M-12的Datasheet PDF文件第6页浏览型号LM2672M-12的Datasheet PDF文件第7页 
February 2005  
LM2672  
SIMPLE SWITCHER® Power Converter High Efficiency  
1A Step-Down Voltage Regulator with Features  
To simplify the LM2672 buck regulator design procedure,  
there exists computer design software, LM267X Made  
Simple version 1.0.  
General Description  
The LM2672 series of regulators are monolithic integrated  
circuits built with a LMDMOS process. These regulators  
provide all the active functions for a step-down (buck)  
switching regulator, capable of driving a 1A load current with  
excellent line and load regulation. These devices are avail-  
able in fixed output voltages of 3.3V, 5.0V, 12V, and an  
adjustable output version.  
Features  
n Efficiency up to 96%  
n Available in SO-8 and 8-pin DIP packages  
n Computer Design Software LM267X Made Simple  
version 1.0  
Requiring a minimum number of external components, these  
regulators are simple to use and include patented internal  
frequency compensation (Patent Nos. 5,382,918 and  
5,514,947), fixed frequency oscillator, external shutdown,  
soft-start, and frequency synchronization.  
n Simple and easy to design with  
n Requires only 5 external components  
n Uses readily available standard inductors  
n 3.3V, 5.0V, 12V, and adjustable output versions  
n Adjustable version output voltage range: 1.21V to 37V  
The LM2672 series operates at a switching frequency of  
260 kHz, thus allowing smaller sized filter components than  
what would be needed with lower frequency switching regu-  
lators. Because of its very high efficiency ( 90%), the cop-  
per traces on the printed circuit board are the only heat  
sinking needed.  
n
1.5% max output voltage tolerance over line and load  
conditions  
>
n Guaranteed 1A output load current  
n 0.25Ω DMOS Output Switch  
n Wide input voltage range: 8V to 40V  
n 260 kHz fixed frequency internal oscillator  
n TTL shutdown capability, low power standby mode  
n Soft-start and frequency synchronization  
n Thermal shutdown and current limit protection  
A family of standard inductors for use with the LM2672 are  
available from several different manufacturers. This feature  
greatly simplifies the design of switch-mode power supplies  
using these advanced ICs. Also included in the datasheet  
are selector guides for diodes and capacitors designed to  
work in switch-mode power supplies.  
Typical Applications  
Other features include a guaranteed 1.5% tolerance on  
output voltage within specified input voltages and output  
load conditions, and 10% on the oscillator frequency. Ex-  
ternal shutdown is included, featuring typically 50 µA  
stand-by current. The output switch includes current limiting,  
as well as thermal shutdown for full protection under fault  
conditions.  
>
n Simple High Efficiency ( 90%) Step-Down (Buck)  
Regulator  
n Efficient Pre-Regulator for Linear Regulators  
Typical Application (Fixed Output Voltage  
Versions)  
01293401  
SIMPLE SWITCHER® is a registered trademark of National Semiconductor Corporation.  
Windows® is a registered trademark of Microsoft Corporation.  
© 2005 National Semiconductor Corporation  
DS012934  
www.national.com  
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 		SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator with Featur
LM2672M-3.3/NOPB TI

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 		SIMPLE SWITCHER® 6.5V to 40V, 1A Low Component Count Step-Down Regulator 8-SOIC -4
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 		SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator with Featur
LM2672M-5.0 TI

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 		Power Converter High Efficiency 1A Step-Down Voltage Regulator with Features
LM2672M-5.0/NOPB NSC

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 		IC 2.2 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, PDSO8, 0.150 INCH, PLASTIC, SO-8
LM2672M-5.0/NOPB ROCHESTER

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 		2.2A SWITCHING REGULATOR, 275kHz SWITCHING FREQ-MAX, PDSO8, 0.150 INCH, PLASTIC, SO-8
LM2672M-5.0/NOPB TI

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 		LM2672 SIMPLE SWITCHER® Power Converter High

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