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LM2674M-3.3 PDF预览

LM2674M-3.3

更新时间： 2024-09-29 12:04:39
品牌 Logo 应用领域
德州仪器 - TI 转换器稳压器
页数 文件大小 规格书
32页 1570K
描述
LM2674 SIMPLE SWITCHER® Power Converter High Efficiency 500 mA Step-Down Voltage Regulator

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LM2674M-3.3 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：SOP, SOP8,.25针数：8
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：5.09Samacsys Description：Stepdown switching regulator,LM2674M-3.3
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：VOLTAGE-MODE
最大输入电压：40 V最小输入电压：6.5 V
标称输入电压：12 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：1.25 A
标称输出电压：3.3 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：NOT SPECIFIED
宽度：3.9 mmBase Number Matches：1

LM2674M-3.3 数据手册

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LM2674  
www.ti.com  
SNVS007F –SEPTEMBER 1998–REVISED APRIL 2013  
®
LM2674 SIMPLE SWITCHER Power Converter High Efficiency  
500 mA Step-Down Voltage Regulator  
Check for Samples: LM2674  
1
FEATURES  
DESCRIPTION  
The LM2674 series of regulators are monolithic  
234  
•
Efficiency up to 96%  
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 500 mA load current with excellent line and  
load regulation. These devices are available in fixed  
output voltages of 3.3V, 5.0V, 12V, and an adjustable  
output version.  
•
Available in SOIC-8, 8-Pin PDIP and WSON  
Packages  
•
Computer Design Software LM267X Made  
Simple (Version 6.0)  
•
•
•
•
Simple and Easy to Design With  
Requires Only 5 External Components  
Uses Readily Available Standard Inductors  
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) and a fixed  
frequency oscillator.  
3.3V, 5.0V, 12V, and Adjustable Output  
Versions  
•
•
Adjustable Version Output Voltage Range:  
1.21V to 37V  
The LM2674 series operates at a switching frequency  
of 260 kHz, thus allowing smaller sized filter  
components than what would be needed with lower  
frequency switching regulators. Because of its very  
high efficiency (>90%), the copper traces on the  
printed circuit board are the only heat sinking needed.  
±1.5% Max Output Voltage Tolerance Over  
Line and Load Conditions  
•
•
•
•
•
Guaranteed 500mA Output Load Current  
0.25Ω DMOS Output Switch  
Wide Input Voltage Range: 8V to 40V  
260 kHz Fixed Frequency Internal Oscillator  
A family of standard inductors for use with the  
LM2674 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.  
TTL Shutdown Capability, Low Power Standby  
Mode  
•
Thermal Shutdown and Current Limit  
Protection  
TYPICAL APPLICATIONS  
•
Simple High Efficiency (>90%) Step-Down  
(Buck) Regulator  
•
•
Efficient Pre-Regulator for Linear Regulators  
Positive-to-Negative Converter  
Typical Application  
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.  
SIMPLE SWITCHER is a registered trademark of Texas Instruments.  
Windows is a registered trademark of Microsoft Corporation.  
All other trademarks are the property of their respective owners.  
2
3
4
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 © 1998–2013, Texas Instruments Incorporated  
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LM2674M-3.3 替代型号

型号 品牌 替代类型 描述 数据表
LM2675M-3.3 TI

完全替代

 LM2675 SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage
LM2674M-3.3/NOPB TI

完全替代

 LM2674 SIMPLE SWITCHER® Power Converter High
LM2674MX-5.0/NOPB TI

类似代替

 LM2674 SIMPLE SWITCHER® Power Converter High

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