5秒后页面跳转
捷配首页

Datasheet > LM3679TL-1.8
LM3679TL-1.8 PDF预览

LM3679TL-1.8

更新时间： 2024-11-15 03:15:39
品牌 Logo 应用领域
美国国家半导体 - NSC 转换器
页数 文件大小 规格书
16页 3778K
描述
3MHz, 350mA Miniature Step-Down DC-DC Converter for Ultra Low Profile Applications (Height < 0.55mm)

阅读下载

中文翻译

获取价格

LM3679TL-1.8 数据手册

 浏览型号LM3679TL-1.8的Datasheet PDF文件第2页浏览型号LM3679TL-1.8的Datasheet PDF文件第3页浏览型号LM3679TL-1.8的Datasheet PDF文件第4页浏览型号LM3679TL-1.8的Datasheet PDF文件第5页浏览型号LM3679TL-1.8的Datasheet PDF文件第6页浏览型号LM3679TL-1.8的Datasheet PDF文件第7页 
February 5, 2008  
LM3679  
3MHz, 350mA Miniature Step-Down DC-DC Converter for  
Ultra Low Profile Applications (Height < 0.55mm)  
General Description  
Features  
The LM3679 step-down DC-DC converter is optimized for  
powering ultra-low voltage circuits from a single Li-Ion cell  
battery and input voltage rails from 2.5V to 5.5V. It provides  
up to 350mA load current, over the entire input voltage range.  
The LM3679 output voltage can be configured to 1.2V, 1.5V,  
or 1.8V.  
16 µA typical quiescent current  
■
■
■
■
■
■
■
■
350 mA maximum load capability  
3 MHz PWM fixed switching frequency (typ)  
Automatic PFM/PWM mode switching  
Available in 5-bump micro SMD package and UR package  
Internal synchronous rectification for high efficiency  
The device offers superior features and performance for mo-  
bile phones and similar portable applications with complex  
power management systems. Automatic intelligent switching  
between PWM low-noise and PFM low-current mode offers  
improved system control. During PWM mode operation, the  
device operates at a fixed-frequency of 3 MHz (typ). PWM  
mode drives loads from ~ 80mA to 350mA max. Hysteretic  
PFM mode extends the battery life by reducing the quiescent  
current to 16 µA (typ) during light load and standby operation.  
Internal synchronous rectification provides high efficiency. In  
shutdown mode (Enable pin pulled low), the device turns off  
and reduces battery consumption to 0.01 µA (typ).  
Internal soft start  
0.01 µA typical shutdown current  
Operates from a single Li-Ion cell battery  
■
■
■
Current overload and Thermal shutdown protection  
Three external components required for typical  
applications  
Low profile solution (0.55mm max height, includes four  
external components)  
■
Applications  
The LM3679 is available in a lead-free (No PB) 5-bump micro  
SMD package, 0.6mm height, and in an ultra thin 0.3mm  
height UR package. Using the UR package along with specific  
external components, allows for a low profile solution size with  
a max height of 0.55mm. A switching frequency of 3 MHz (typ)  
allows use of tiny surface-mount components. Only three ex-  
ternal surface-mount components, an inductor and two ce-  
ramic capacitors, are required. .  
Mobile phones  
■
■
■
■
■
■
■
PDAs  
MP3 players  
W-LAN  
Portable Instruments  
Digital still cameras  
Portable Hard disk drives  
Efficiency vs. Output Current  
(VOUT = 1.8V)  
Typical Application Circuit  
30016301  
FIGURE 1. Typical Low Profile Application Circuit  
(0.55mm max height using LM3679UR)  
30016387  
© 2008 National Semiconductor Corporation  
300163  
www.national.com  
1234567...16

中文翻译

下载PDF

与LM3679TL-1.8相关器件

型号 品牌 获取价格 描述 数据表
LM3679TL-1.8/NOPB ROCHESTER

获取价格

 		1.075A SWITCHING REGULATOR, 3500kHz SWITCHING FREQ-MAX, PBGA5, 0.60 MM HEIGHT, 0.50 MM PIT
LM3679TL-1.8/NOPB NSC

获取价格

 		IC 1.075 A SWITCHING REGULATOR, 3500 kHz SWITCHING FREQ-MAX, PBGA5, 0.60 MM HEIGHT, 0.50 M
LM3679TL-1.8/NOPB TI

获取价格

 		3MHz, 350mA Miniature Step-Down DC-DC Converter for Ultra Low Profile Applications 5-DSBGA
LM3679TLX-1.8 NSC

获取价格

 		3MHz, 350mA Miniature Step-Down DC-DC Converter for Ultra Low Profile Applications (Height
LM3679TLX-1.8/NOPB NSC

获取价格

 		IC 1.075 A SWITCHING REGULATOR, 3500 kHz SWITCHING FREQ-MAX, PBGA5, 0.60 MM HEIGHT, 0.50 M
LM3679UR-1.2 NSC

获取价格

 		3MHz, 350mA Miniature Step-Down DC-DC Converter for Ultra Low Profile Applications (Height
LM3679UR-1.2/NOPB NSC

获取价格

 		IC 1.075 A SWITCHING REGULATOR, 3500 kHz SWITCHING FREQ-MAX, PBGA5, 0.60 MM HEIGHT, 0.50 M
LM3679UR-1.2/NOPB TI

获取价格

 		3MHz, 350mA Miniature Step-Down DC-DC Converter for Ultra Low Profile Applications (Height
LM3679UR-1.5 NSC

获取价格

 		3MHz, 350mA Miniature Step-Down DC-DC Converter for Ultra Low Profile Applications (Height
LM3679UR-1.8 NSC

获取价格

 		3MHz, 350mA Miniature Step-Down DC-DC Converter for Ultra Low Profile Applications (Height

与LM3679TL-1.8相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证