5秒后页面跳转
捷配首页

Datasheet > 电源电路 > 开关式稳压器或控制器> LTC1773EMS-PBF
LTC1773EMS-PBF PDF预览

LTC1773EMS-PBF

更新时间： 2024-11-23 05:43:39
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
20页 285K
描述
Synchronous Step-Down DC/DC Controller

阅读下载

中文翻译

获取价格

LTC1773EMS-PBF 数据手册

 浏览型号LTC1773EMS-PBF的Datasheet PDF文件第2页浏览型号LTC1773EMS-PBF的Datasheet PDF文件第3页浏览型号LTC1773EMS-PBF的Datasheet PDF文件第4页浏览型号LTC1773EMS-PBF的Datasheet PDF文件第5页浏览型号LTC1773EMS-PBF的Datasheet PDF文件第6页浏览型号LTC1773EMS-PBF的Datasheet PDF文件第7页 
LTC1773  
Synchronous Step-Down  
DC/DC Controller  
U
FEATURES  
DESCRIPTIO  
The LTC®1773 is a current mode synchronous buck regu-  
lator controller that drives external complementary power  
MOSFETs using a fixed frequency architecture. The oper-  
ating supply range is from 2.65V to 8.5V, making it  
suitable for 1- or 2-cell lithium-ion battery powered appli-  
cations. BurstMode® operationprovideshighefficiencyat  
low load currents. 100% duty cycle provides low dropout  
operation which extends operating time in battery-oper-  
ated systems.  
■
High Efficiency: Up to 95%  
■
Constant Frequency 550kHz Operation  
■
VIN from 2.65V to 8.5V  
■
VOUT from 0.8V to VIN  
OPTI-LOOP® Compensation Minimizes COUT  
■
■
Synchronizable up to 750kHz  
■
Selectable Burst Mode Operation  
■
Low Quiescent Current: 80µA  
■
Low Dropout Operation: 100% Duty Cycle  
■
Secondary Winding Regulation  
Soft-Start  
The operating frequency is internally set at 550kHz, allow-  
ing the use of small surface mount inductors. For switch-  
ing-noisesensitiveapplications, itcanbesynchronizedup  
to 750kHz. Peak current limit is user programmable with  
an external high side sense resistor. A SYNC/FCB control  
pin guarantees regulation of secondary windings regard-  
less of load on the main output by forcing continuous  
operation. Burst Mode operation is inhibited during syn-  
chronization or when the SYNC/FCB pin is pulled low to  
reducenoiseandRFinterference. Soft-startisprovidedby  
an external capacitor.  
■
■
Current Mode Operation for Excellent Line and  
Load Transient Response  
■
Low Shutdown IQ = 10µA  
■
±1.5% Reference Accuracy  
■
Precision 2.5V Undervoltage Lockout  
■
Available in 10-LUead MSOP  
APPLICATIO S  
■
Cellular Telephones  
■
RF PA Supplies  
Synchronous rectification increases efficiency and elimi-  
nates the need for a Schottky diode, saving components  
and board space. The LTC1773 comes in a 10-lead MSOP  
package.  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
OPTI-LOOP and Burst Mode are registered trademarks of Linear Technology Corporation.  
Protected by U.S. Patents, including 5481178, 6580258, 6304066, 6127815.  
■
Portable Instruments  
■
Wireless MODEMS  
■
Distributed Power Systems  
■
Notebook and Palm Top Computers, PDAs  
■
Single and Dual Cell Lithium-Ion Powered Devices  
U
TYPICAL APPLICATIO  
V
IN  
2.65V TO 8.5V  
High Efficiency  
100  
+
V
= 3.3V  
IN  
95  
90  
85  
80  
75  
70  
65  
60  
55  
V
R
C
SYNC/FCB  
IN  
SENSE  
IN  
68µF  
0.025Ω  
V
IN  
= 5V  
RUN/SS SENSE–  
0.1µF  
L1  
3µH  
V
= 8V  
IN  
I
TH  
TG  
V
OUT  
2.5V  
LTC1773  
GND  
47pF  
30k  
SW  
BG  
220pF  
V
FB  
+
Si9801DY  
169k  
C
OUT  
180µF  
L = SUMIDA CDRH6D28-3R0  
80.6k  
1
10  
100  
1000 5000  
1773 F01  
OUTPUT CURRENT (mA)  
1773 F1b  
Figure 1. Step-Down Converter  
1773fb  
1
1234567...20

中文翻译

下载PDF

与LTC1773EMS-PBF相关器件

型号 品牌 获取价格 描述 数据表
LTC1773EMS-TR Linear

获取价格

 		Synchronous Step-Down DC/DC Controller
LTC1773EMS-TRPBF Linear

获取价格

 		Synchronous Step-Down DC/DC Controller
LTC1775 Linear

获取价格

 		High Power No RSENSE TM Current Mode Synchronous Step-Down Switching Regulator
LTC1775 ADI

获取价格

 		高功率 No RSENSE? 电流模式同步降压型开关稳压器
LTC1775C Linear

获取价格

 		High Power No RSENSE TM Current Mode Synchronous Step-Down Switching Regulator
LTC1775CGN Linear

获取价格

 		High Power No RSENSE TM Current Mode Synchronous Step-Down Switching Regulator
LTC1775CGN#TRPBF Linear

获取价格

 		LTC1775 - High Power No RSENSE Current Mode Synchronous Step-Down Switching Regulator; Pac
LTC1775CS Linear

获取价格

 		High Power No RSENSE TM Current Mode Synchronous Step-Down Switching Regulator
LTC1775CS#PBF Linear

获取价格

 		LTC1775 - High Power No RSENSE Current Mode Synchronous Step-Down Switching Regulator; Pac
LTC1775CS#TR Linear

获取价格

 		暂无描述

与LTC1773EMS-PBF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