主页 电源管理 AC/DC 和 DC/DC 转换器（集成 FET）
主页
电源管理
AC/DC 和 DC/DC 转换器（集成 FET）

LM2677

正在供货

具有同步的 SIMPLE SWITCHER 高效 5A 降压电压稳压器

立即订购
数据表

可提供此米6体育平台手机版_好二三四的更新版本

open-in-new 比较替代米6体育平台手机版_好二三四
该米6体育平台手机版_好二三四会持续为现有客户提供。新设计应考虑替代米6体育平台手机版_好二三四。
功能与比较器件相同，但引脚排列有所不同
LMR51450 正在供货 36V、5A 同步降压转换器 Next-generation synchronous buck converter in ultra-small WSON package.
TLVM13660 正在供货 采用 5mm x 5.5mm 增强型 HotRod™ QFN 封装的 36V 输入、1V 至 6V 输出、6A 降压电源模块 Save board space, simplify design and speed time to market with an integrated-inductor power module.

LM2677

正在供货
数据表 立即订购

米6体育平台手机版_好二三四详情

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 5 Vin (min) (V) 8 Vin (max) (V) 40 Switching frequency (min) (kHz) 260 Switching frequency (max) (kHz) 260 Features Frequency synchronization, Over Current Protection Control mode Voltage mode Vout (min) (V) 1.23 Vout (max) (V) 37 Iq (typ) (µA) 4200 Duty cycle (max) (%) 91
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 5 Vin (min) (V) 8 Vin (max) (V) 40 Switching frequency (min) (kHz) 260 Switching frequency (max) (kHz) 260 Features Frequency synchronization, Over Current Protection Control mode Voltage mode Vout (min) (V) 1.23 Vout (max) (V) 37 Iq (typ) (µA) 4200 Duty cycle (max) (%) 91
TO-220 (NDZ) 7 82.6008 mm² 10.16 x 8.13 TO-263 (KTW) 7 153.924 mm² 10.1 x 15.24 VSON (NHM) 14 30 mm² 6 x 5
  • Efficiency up to 92%
  • Simple and Easy to Design Using Off-the-Shelf
    External Components
  • 100-mΩ DMOS Output Switch
  • 3.3-V, 5-V, and 12-V Fixed Output and Adjustable
    (1.2 V to 37 V) Versions
  • 50-µA Standby Current When Switched OFF
  • ±2% Maximum Output Tolerance Over Full Line
    and Load Conditions
  • Wide Input Voltage Range: 8 V to 40 V
  • External Sync Clock Capability (280 kHz to
    400 kHz)
  • 260-kHz Fixed Frequency Internal Oscillator
  • –40°C to 125°C Operating Junction Temperature
    Range
  • Efficiency up to 92%
  • Simple and Easy to Design Using Off-the-Shelf
    External Components
  • 100-mΩ DMOS Output Switch
  • 3.3-V, 5-V, and 12-V Fixed Output and Adjustable
    (1.2 V to 37 V) Versions
  • 50-µA Standby Current When Switched OFF
  • ±2% Maximum Output Tolerance Over Full Line
    and Load Conditions
  • Wide Input Voltage Range: 8 V to 40 V
  • External Sync Clock Capability (280 kHz to
    400 kHz)
  • 260-kHz Fixed Frequency Internal Oscillator
  • –40°C to 125°C Operating Junction Temperature
    Range

The LM2677 series of regulators are monolithic integrated circuits which provide all of the active functions for a step-down (buck) switching regulator capable of driving up to 5-A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low on-resistance DMOS power switch. The series consists of fixed output voltages of 3.3-V, 5-V, and 12-V and an adjustable output version.

The SIMPLE SWITCHER® concept provides for a complete design using a minimum number of external components. The switching clock frequency can be provided by an internal fixed frequency oscillator (260 kHz) or from an externally provided clock in the range of 280 kHz to 400 kHz, which allows the use of physically smaller-sized components. A family of standard inductors for use with the LM2677 are available from several manufacturers to greatly simplify the design process. The external Sync clock provides direct and precise control of the output ripple frequency for consistent filtering or frequency spectrum positioning.

The LM2677 series also has built-in thermal shutdown, current-limiting, and an ON/OFF control input that can power down the regulator to a low 50-µA quiescent-current standby condition. The output voltage is ensured to a ±2% tolerance.

The LM2677 series of regulators are monolithic integrated circuits which provide all of the active functions for a step-down (buck) switching regulator capable of driving up to 5-A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low on-resistance DMOS power switch. The series consists of fixed output voltages of 3.3-V, 5-V, and 12-V and an adjustable output version.

The SIMPLE SWITCHER® concept provides for a complete design using a minimum number of external components. The switching clock frequency can be provided by an internal fixed frequency oscillator (260 kHz) or from an externally provided clock in the range of 280 kHz to 400 kHz, which allows the use of physically smaller-sized components. A family of standard inductors for use with the LM2677 are available from several manufacturers to greatly simplify the design process. The external Sync clock provides direct and precise control of the output ripple frequency for consistent filtering or frequency spectrum positioning.

The LM2677 series also has built-in thermal shutdown, current-limiting, and an ON/OFF control input that can power down the regulator to a low 50-µA quiescent-current standby condition. The output voltage is ensured to a ±2% tolerance.
filter 查找其他 AC/DC 和 DC/DC 转换器（集成 FET）
下载 观看带字幕的视频 视频

技术文档

star =有关此米6体育平台手机版_好二三四的 TI 精选热门文档
未找到结果。请清除搜索并重试。
查看全部 22
类型 标题 下载最新的英语版本 日期
* 数据表 LM2677 SIMPLE SWITCHER® High Efficiency 5-A Step-Down Voltage Regulator with Sync 数据表 (Rev. J) PDF | HTML 2016年 6月 29日
应用手册 半导体和 IC 封装热指标 (Rev. D) PDF | HTML 英语版 (Rev.D) PDF | HTML 2024年 4月 24日
技术文章 How to increase system reliability and simplify design using DC/DC converters PDF | HTML 2016年 6月 13日
技术文章 The importance of accurate switching frequency and current limit when selecting bu PDF | HTML 2016年 4月 19日
技术文章 Advantages of leaded packages in robust industrial designs PDF | HTML 2016年 3月 8日
应用手册 Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 2014年 9月 12日
应用手册 AN-1187 Leadless Leadframe Package (LLP) (Rev. R) 2013年 5月 7日
EVM 用户指南 AN-1135 LM267X 3A, 5A Evaluation Boards (Rev. D) 2013年 4月 24日
应用手册 AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013年 4月 24日
应用手册 AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 2013年 4月 23日
应用手册 AN-1197 Selecting Inductors for Buck Converters (Rev. B) 2013年 4月 23日
应用手册 AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013年 4月 23日
应用手册 AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 2013年 4月 23日
应用手册 AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 2013年 4月 23日
应用手册 AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 2013年 4月 23日
应用手册 AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013年 4月 23日
应用手册 AN-1Positive-to-Negative Buck-Boost Converter Using LM267x SIMPLE SWITCHER (Rev. E) 2013年 4月 23日
应用手册 AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013年 4月 23日
应用手册 Simple Techniques Minimize Cross-Coupling in Distributed Power Systems 2007年 3月 21日
应用手册 Input and Output Capacitor Selection 2005年 9月 19日
更多文献资料 SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005年 7月 12日
应用手册 AN-643 EMI/RFI Board Design (Rev. B) 2004年 5月 3日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

封装 引脚 CAD 符号、封装和 3D 模型
TO-220 (NDZ) 7 Ultra Librarian
TO-263 (KTW) 7 Ultra Librarian
VSON (NHM) 14 Ultra Librarian
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

视频