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> LTC1775
LTC1775 PDF预览

LTC1775

更新时间： 2024-11-18 22:55:51
品牌 Logo 应用领域
凌特 - Linear 稳压器开关
页数 文件大小 规格书
24页 292K
描述
High Power No RSENSE TM Current Mode Synchronous Step-Down Switching Regulator

阅读下载

中文翻译

获取价格

LTC1775 数据手册

 浏览型号LTC1775的Datasheet PDF文件第2页浏览型号LTC1775的Datasheet PDF文件第3页浏览型号LTC1775的Datasheet PDF文件第4页浏览型号LTC1775的Datasheet PDF文件第5页浏览型号LTC1775的Datasheet PDF文件第6页浏览型号LTC1775的Datasheet PDF文件第7页 
LTC1775  
High Power  
No R  
TM Current Mode  
SENSE  
Synchronous Step-Down  
Switching Regulator  
U
DESCRIPTIO  
FEATURES  
The LTC®1775 is a synchronous step-down switching  
regulator controller that drives external N-channel power  
MOSFETs using few external components. Current mode  
control with MOSFET VDS sensing eliminates the need for  
a sense resistor and improves efficiency. Largely similar  
to the LTC1625, the LTC1775 has twice the maximum  
sensevoltageforhighcurrentapplications. Thefrequency  
of a nominal 150kHz internal oscillator can be synchro-  
nized to an external clock over a 1.5:1 frequency range.  
Burst ModeTM operation at low load currents reduces  
switchinglossesandlowdropoutoperationextendsoper-  
ating time in battery-powered systems. A forced continu-  
ous mode control pin can assist secondary winding  
regulation by disabling Burst Mode operation when the  
main output is lightly loaded.  
■
Highest Efficiency Current Mode Controller  
■
No Sense Resistor Required  
■
300mV Maximum Current Sense Voltage  
■
Stable High Current Operation  
■
Dual N-Channel MOSFET Synchronous Drive  
■
Wide VIN Range: 4V to 36V  
■
Wide VOUT Range: 1.19V to VIN  
■
±1% 1.19V Reference  
■
Programmable Fixed Frequency with Injection Lock  
■
Very Low Drop Out Operation: 99% Duty Cycle  
■
Forced Continuous Mode Control Pin  
■
Optional Programmable Soft Start  
■
Pin Selectable Output Voltage  
■
Foldback Current Limit  
■
Output Overvoltage Protection  
■
Logic Controlled Micropower Shutdown: IQ < 30µA  
Fault protection is provided by foldback current limiting  
and an output overvoltage comparator. An external ca-  
pacitor attached to the RUN/SS pin provides soft start  
capability for supply sequencing. A wide supply range  
allowsoperationfrom4V(4.3VforLTC1775I)to36Vatthe  
input and 1.19V to VIN at the output.  
■
Available in 16-Lead Narrow SSOP and SO Packages  
U
APPLICATIO S  
■
Notebook Computers  
■
Automotive Electronics  
■
Battery Chargers  
Distributed Power Systems  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
No RSENSE and Burst Mode are trademarks of Linear Technology Corporation.  
■
U
TYPICAL APPLICATION  
Efficiency vs Load Current  
100  
LTC1775  
V
IN  
V
= 10V  
f = 150kHz  
FCB = INTV  
IN  
5V TO  
28V  
SYNC  
V
IN  
V
OUT  
= 5V  
C
IN  
+
C
0.1µF  
95  
90  
85  
80  
75  
70  
SS  
TK  
CC  
22µF  
30V  
×4  
M1  
RUN/SS  
TG  
SUD50N03-10  
L1  
6µH  
V
= 3.3V  
OUT  
V
3.3V  
10A  
OUT  
V
SW  
PROG  
C
0.33µF  
B
BOOST  
+
C
OUT  
D1  
MBRS340  
R
C
D
B
680µF  
10k  
CMDSH-3  
6.3V  
I
INTV  
CC  
TH  
C
C
2.2nF  
M2  
SGND  
BG  
SUD50N03-10  
+
C
VCC  
4.7µF  
V
PGND  
OSENSE  
1775 F01  
0.01  
0.1  
1
10  
LOAD CURRENT (A)  
Figure 1. High Efficiency Step-Down Converter  
1775 F01b  
1
1234567...24

中文翻译

下载PDF

与LTC1775相关器件

型号 品牌 获取价格 描述 数据表
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
LTC1775CS#TRPBF Linear

获取价格

 		LTC1775 - High Power No RSENSE Current Mode Synchronous Step-Down Switching Regulator; Pac
LTC1775I Linear

获取价格

 		High Power No RSENSE TM Current Mode Synchronous Step-Down Switching Regulator
LTC1775IGN Linear

获取价格

 		High Power No RSENSE TM Current Mode Synchronous Step-Down Switching Regulator
LTC1775IGN#PBF Linear

获取价格

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

与LTC1775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