5秒后页面跳转
捷配首页

Datasheet > LTC3521
LTC3521 PDF预览

LTC3521

更新时间： 2024-10-01 11:55:03
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
20页 1575K
描述
Wide VIN, 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters

阅读下载

中文翻译

获取价格

LTC3521 数据手册

 浏览型号LTC3521的Datasheet PDF文件第2页浏览型号LTC3521的Datasheet PDF文件第3页浏览型号LTC3521的Datasheet PDF文件第4页浏览型号LTC3521的Datasheet PDF文件第5页浏览型号LTC3521的Datasheet PDF文件第6页浏览型号LTC3521的Datasheet PDF文件第7页 
LTC3521  
Wide V , 1A Buck-Boost  
IN  
DC/DC and Dual 600mA  
Buck DC/DC Converters  
FeaTures  
DescripTion  
TheLTC®3521combinesa1Abuck-boostDC/DCconverter  
anddual600mAsynchronousbuckDC/DCconverters.The  
1.1MHz switching frequency minimizes the solution foot-  
printwhilemaintaininghighefficiency.Allthreeconverters  
feature soft-start and internal compensation to minimize  
the solution footprint and simplify the design process.  
n
Three High Efficiency DC/DC Converters:  
Buck-Boost (V : 1.8V to 5.25V, I : 1A)  
OUT  
OUT  
Dual Buck (V : 0.6V to V , I : 600mA)  
OUT  
IN OUT  
n
n
n
1.8V to 5.5V Input Voltage Range  
Pin-Selectable Burst Mode® Operation  
30µA Total Quiescent Current in Burst Mode  
Operation  
The buck converters are current mode controlled and  
utilize an internal synchronous rectifier to improve ef-  
ficiency. The buck converters support 100% duty cycle  
operation to extend battery life. If the PWM pin is held  
low, the buck converters automatically transition from  
Burst Mode operation to PWM mode at high loads. With  
the PWM pin held high, the buck converters remain in low  
noise, 1.1MHz PWM mode.  
n
n
n
n
n
Independent Power Good Indicator Outputs  
Integrated Soft-Start  
Thermal and Overcurrent Protection  
<2µA Current in Shutdown  
Small 4mm × 4mm QFN and Thermally Enhanced  
TSSOP Packages  
applicaTions  
Thebuck-boostconverterfeaturescontinuousconduction  
operation to maximize efficiency and minimize noise. At  
light loads, the buck-boost converter can be operated in  
Burst Mode operation to improve efficiency and reduce  
no-load standby current.  
n
Bar Code Readers  
n
Medical Instruments  
n
Handy Terminals  
n
PDAs, Handheld PCs  
n
GPS Receivers  
The LTC3521 provides a <2μA shutdown mode, over-  
temperature shutdown and current limit protection  
on all converters. The LTC3521 is available in a 24-pin  
0.75mm × 4mm × 4mm QFN package, and a 20-pin  
thermally enhanced TSSOP package.  
L, LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks  
and PowerPath is a trademark of Linear Technology Corporation. All other trademarks are the  
property of their respective owners. Protected by U. S. Patents, including 6404251, 6166527.  
Typical applicaTion  
Efficiency vs VIN  
V
IN  
100  
98  
+
2.4V TO 4.2V  
4.7µF  
Li-Ion  
4.7µH  
4.7µH  
4.7µH  
V
I
= 3.3V  
PV  
SW1A  
PV  
V
OUT1  
= 500mA  
IN1  
IN2  
SW2  
OUT2  
96  
94  
92  
90  
88  
86  
84  
82  
80  
78  
76  
74  
72  
70  
1.8V  
OUT  
600mA  
137k  
10µF  
10µF  
SW1B  
V
OUT1  
3.3V  
FB2  
V
I
= 1.2V  
V
OUT1  
V
I
= 1.8V  
OUT3  
= 200mA  
OUT2  
= 200mA  
800mA  
(1A, V > 3.0V)  
68.1k  
OUT  
OUT  
22µF  
1.0M  
LTC3521  
IN  
FB1  
V
OUT3  
SW3  
FB3  
1.2V  
SHDN1  
SHDN2  
SHDN3  
PWM  
221k  
ON  
600mA  
OFF  
100k  
100k  
PGOOD1  
PGOOD2  
PGOOD3  
PWM  
BURST  
PGND1 GND PGND2  
2.4  
3.4  
4.4  
5.4  
3521 TA01a  
V
(V)  
3521 TA01b  
IN  
3521f  
ꢀ
1234567...20

中文翻译

下载PDF

与LTC3521相关器件

型号 品牌 获取价格 描述 数据表
LTC3521EFE#PBF Linear

获取价格

 		LTC3521 - 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters; Package: TSSOP; Pins:
LTC3521EFE-PBF Linear

获取价格

 		Wide VIN, 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters
LTC3521EFE-TRPBF Linear

获取价格

 		Wide VIN, 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters
LTC3521EUF#PBF Linear

获取价格

 		LTC3521 - 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters; Package: QFN; Pins: 24
LTC3521EUF#TRPBF Linear

获取价格

 		LTC3521 - 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters; Package: QFN; Pins: 24
LTC3521EUF-PBF Linear

获取价格

 		Wide VIN, 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters
LTC3521EUF-TRPBF Linear

获取价格

 		Wide VIN, 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters
LTC3521IFE#PBF Linear

获取价格

 		LTC3521 - 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters; Package: TSSOP; Pins:
LTC3521IUF#PBF Linear

获取价格

 		LTC3521 - 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters; Package: QFN; Pins: 24
LTC3521IUF#TRPBF Linear

获取价格

 		LTC3521 - 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters; Package: QFN; Pins: 24

与LTC3521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