5秒后页面跳转
捷配首页

Datasheet > LM3668_08
LM3668_08 PDF预览

LM3668_08

更新时间： 2024-09-26 04:44:23
品牌 Logo 应用领域
美国国家半导体 - NSC 转换器电感器
页数 文件大小 规格书
18页 4233K
描述
1A, High Efficiency Dual Mode Single Inductor Buck-Boost DC/DC Converter

阅读下载

中文翻译

获取价格

LM3668_08 数据手册

 浏览型号LM3668_08的Datasheet PDF文件第2页浏览型号LM3668_08的Datasheet PDF文件第3页浏览型号LM3668_08的Datasheet PDF文件第4页浏览型号LM3668_08的Datasheet PDF文件第5页浏览型号LM3668_08的Datasheet PDF文件第6页浏览型号LM3668_08的Datasheet PDF文件第7页 
March 21, 2008  
LM3668  
1A, High Efficiency Dual Mode Single Inductor Buck-Boost  
DC/DC Converter  
General Description  
The LM3668 is a synchronous buck-boost DC-DC converter  
optimized for powering low voltage circuits from a Li-Ion bat-  
tery and input voltage rails between 2.5V and 5.5V. It has the  
capability to support up to 1A output current over the output  
voltage range. The LM3668 regulates the output voltage over  
the complete input voltage range by automatically switching  
between buck or boost modes depending on the input volt-  
age.  
Features  
45µA typical quiescent current  
■
■
For 2.8V/3.3V and 3.0/3.4V versions:  
- 1A maximum load current for VIN = 2.8V to 5.5V  
- 800mA maximum load current for VIN = 2.7V  
- 600mA maximum load current for VIN = 2.5V  
For 4.5/5V  
■
- 1A maximum load current for VIN = 3.9V to 5.5V  
- 800mA maximum load current for VIN = 3.4V to 3.8V  
- 700mA maximum load current for VIN = 3.0V to 3.3V  
- 600mA maximum load current for VIN = 2.7V to 2.9V  
The LM3668 has 2 N-channel MOSFETS and 2 P-channel  
MOSFETS arranged in a topology that provides continuous  
operation through the buck and boost operating modes.  
There is a MODE pin that allows the user to choose between  
an intelligent automatic PFM-PWM mode operation and  
forced PWM operation. During PWM mode, a fixed-frequency  
2.2MHz (typ.) is used. PWM mode drives load up to 1A. Hys-  
teretic PFM mode extends the battery life through reduction  
of the quiescent current to 45µA (typ.) at light loads during  
system standby. Internal synchronous rectification provides  
high efficiency. In shutdown mode (Enable pin pulled low) the  
device turns off and reduces battery consumption to 0.01µA  
(typ.).  
2.2MHz PWM fixed switching frequency (typ.)  
■
■
■
■
Automatic PFM-PWM Mode or Forced PWM Mode  
Wide Input Voltage Range: 2.5V to 5.5V  
Internal synchronous rectification for high efficiency  
Internal soft start: 600µs Maximum start-up time after VIN  
settled  
■
0.01µA typical shutdown current  
■
■
■
Current overload and Thermal shutdown protection  
Frequency Sync Pin: 1.6MHz to 2.7MHz  
The LM3668 is available in a 12-pin LLP package. A high  
switching frequency of 2.2MHz (typ.) allows the use of tiny  
surface-mount components including a 2.2µH inductor, a  
10µF input capacitor, and a 22µF output capacitor.  
Applications  
Handset Peripherals  
■
■
■
■
MP3 players  
Pre-Regulation for linear regulators  
PDAs  
Portable Hard Disk Drives  
■
WiMax Modems  
■
Typical Applications  
20191401  
Typical Application Circuit  
20191476  
Efficiency at 3.3V Output  
© 2008 National Semiconductor Corporation  
201914  
www.national.com  
1234567...18

中文翻译

下载PDF

与LM3668_08相关器件

型号 品牌 获取价格 描述 数据表
LM3668_0809 NSC

获取价格

 		1A, High Efficiency Dual Mode Single Inductor Buck-Boost DC/DC Converter
LM3668_15 TI

获取价格

 		1-A, High-Efficiency Dual-Mode Single-Inductor Buck-Boost DC-DC Converter
LM3668-Q1 TI

获取价格

 		1A, High-Efficiency Dual-Mode Single-Inductor Buck-Boost DC-DC Converter
LM3668-Q1_15 TI

获取价格

 		1A, High-Efficiency Dual-Mode Single-Inductor Buck-Boost DC-DC Converter
LM3668QDNTRQ1 TI

获取价格

 		1A, High-Efficiency Dual-Mode Single-Inductor Buck-Boost DC-DC Converter
LM3668SD-2833 NSC

获取价格

 		1A, High Efficiency Dual Mode Single Inductor Buck-Boost DC/DC Converter
LM3668SD-2833/NOPB TI

获取价格

 		1-A, High-Efficiency Dual-Mode Single-Inductor Buck-Boost DC-DC Converter
LM3668SD-3.3 NSC

获取价格

 		1A, High Efficiency Dual Mode Single Inductor Buck-Boost DC/DC Converter
LM3668SD-3034 NSC

获取价格

 		1A, High Efficiency Dual Mode Single Inductor Buck-Boost DC/DC Converter
LM3668SD-3034/NOPB TI

获取价格

 		1-A, High-Efficiency Dual-Mode Single-Inductor Buck-Boost DC-DC Converter

与LM3668_08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