datasheet
电子工程世界电子工程世界电子工程世界
Datasheet
型号

关键词

搜索
关键词

型号

搜索
Datasheet> 器件分类 > LTC3547BEDDB-1#TRPBF
PDF数据手册
文档预览

LTC3547BEDDB-1#TRPBF

产品描述Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5.5V 0.3A/0.3A Automotive 8-Pin DFN EP T/R
文件大小251KB，共16页
制造商ADI(亚德诺半导体)
官网地址https://www.analog.com
下载文档 详细参数 选型对比 全文预览

LTC3547BEDDB-1#TRPBF概述

Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5.5V 0.3A/0.3A Automotive 8-Pin DFN EP T/R

LTC3547BEDDB-1#TRPBF规格参数

参数名称属性值
欧盟限制某些有害物质的使用Compliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
类型
Type		Synchronous Step Down
输出类型
Output Type		Adjustable
Switching Frequency (kHz)2700
Switching RegulatorYes
Number of Outputs2
Output Voltage (V)0.6 to 5.5
Maximum Output Current (A)0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3
Minimum Input Voltage (V)2.5
Maximum Input Voltage (V)5.5
Operating Supply Voltage (V)2.5 to 5.5
Line Regulation0.5%/V
Load Regulation0.5%(Typ)
Efficiency (%)96
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
系列
Packaging		Tape and Reel
Pin Count8
Standard Package NameDFN
Supplier PackageDFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length3
Package Width2
PCB changed8
Lead ShapeNo Lead

文档预览

下载PDF文档
LTC3547B
Dual Monolithic
300mA Synchronous
Step-Down Regulator
FEATURES
■
■
■
■
■
■
■
■
■
■
DESCRIPTIO
■
■
■
■
High Efficiency (Up to 96%) Dual Step-Down
Outputs
300mA Output Current per Channel at V
IN
= 3V
2.25MHz Constant-Frequency Operation
2.5V to 5.5V Input Voltage Range
Low Dropout Operation: 100% Duty Cycle
No Schottky Diodes Required
Internally Compensated for All Ceramic Capacitors
Independent Internal Soft-Start for Each Channel
Available in Fixed Output Versions
Current Mode Operation for Excellent Line and Load
Transient Response
0.6V Reference Allows Low Output Voltages
Short-Circuit Protected
Ultralow Shutdown Current: I
Q
< 1μA
Low Profile (0.75mm) 8-Lead 3mm × 2mm
DFN Package
The LTC
®
3547B is a dual, 2.25MHz, constant-frequency,
synchronous step-down DC/DC converter in a tiny 3mm ×
2mm DFN package. 100% duty cycle provides low drop-
out operation, extending battery life in portable systems.
Low output voltages are supported with the 0.6V feed-
back reference voltage. Each regulator can supply 300mA
continuous output current.
The input voltage range is 2.5V to 5.5V, making it ideal
for Li-Ion polymer and USB powered applications. Supply
current is only 1μA in shutdown.
An internally set 2.25MHz switching frequency allows the
use of tiny surface mount inductors and capacitors. Inter-
nal soft-start reduces inrush current during start-up. All
outputs are internally compensated to work with ceramic
capacitors. The LTC3547B is available in a low profile
(0.75mm) 3mm × 2mm DFN package. The LTC3547B
is also available in a fixed output voltage configuration
selected via internal resistor dividers (see Table 2).
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Burst Mode is a registered trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Protected by U.S. Patents,
including 6580258, 5481178, 6304066, 6127815, 6498466, 6611131.
APPLICATIO S
■
■
■
■
■
Cellular Telephones
Digital Still Cameras
Wireless and DSL Modems
Portable Media Players
PDAs/Palmtop PCs
TYPICAL APPLICATIO
V
IN
2.5V TO 5.5V
Dual Monolithic Buck Regulator in 8-Lead 3mm × 2mm DFN
100
90
80
RUN2 V
IN
RUN1
V
OUT2
1.8V AT
300mA
4.7μH
10pF
LTC3547B
SW2
SW1
10pF
4.7μH
V
OUT1
2.5V AT
300mA
EFFICIENCY (%)
4.7μF
70
60
50
40
30
20
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
1
10
100
OUTPUT CURRENT (mA)
V
FB2
4.7μF
475k
237k
GND
V
FB1
150k
475k
4.7μF
3547b TA01
10
0
U
Efficiency vs Output Current
for V
OUT
= 2.5V
1
POWER LOSS (W)
0.1
0.01
0.001
1000
3547bfb
3547b TA01b
U
U
1

LTC3547BEDDB-1#TRPBF相似产品对比

LTC3547BEDDB-1#TRPBF LTC3547BEDDB#PBF LTC3547BEDDB#TR LTC3547BEDDB#TRMPBF LTC3547BEDDB#TRPBF LTC3547BEDDB-1#PBF LTC3547BEDDB-1#TRMPBF LTC3547BIDDB#PBF LTC3547BIDDB#TRMPBF LTC3547BIDDB#TRPBF
描述 Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5.5V 0.3A/0.3A Automotive 8-Pin DFN EP T/R Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5.5V 0.3A/0.3A Automotive 8-Pin DFN EP T/R Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5.5V 0.3A/0.3A Automotive 8-Pin DFN EP T/R Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5.5V 0.3A/0.3A Automotive 8-Pin DFN EP T/R Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5.5V 0.3A/0.3A Automotive 8-Pin DFN EP T/R Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5.5V 0.3A/0.3A Automotive 8-Pin DFN EP T/R Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5.5V 0.3A/0.3A Automotive 8-Pin DFN EP T/R Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5.5V 0.3A/0.3A Automotive 8-Pin DFN EP Reel Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5.5V 0.3A/0.3A Automotive 8-Pin DFN EP T/R Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5.5V 0.3A/0.3A Automotive 8-Pin DFN EP T/R
欧盟限制某些有害物质的使用 Compliant Compliant Not Compliant Compliant Compliant Compliant Compliant Compliant Compliant Compliant
ECCN (US) EAR99 - EAR99 EAR99 EAR99 - EAR99 EAR99 EAR99 EAR99
Part Status Active Unconfirmed Unconfirmed Active Active Unconfirmed Active Unconfirmed Active Active
类型
Type		 Synchronous Step Down Synchronous Step Down Synchronous Step Down Synchronous Step Down Synchronous Step Down Synchronous Step Down Synchronous Step Down Synchronous Step Down Synchronous Step Down Synchronous Step Down
输出类型
Output Type		 Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable
Switching Frequency (kHz) 2700 2700 2700 2700 2700 2700 2700 2700 2700 2700
Switching Regulator Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Number of Outputs 2 2 2 2 2 2 2 2 2 2
Output Voltage (V) 0.6 to 5.5 0.6 to 5.5 0.6 to 5.5 0.6 to 5.5 0.6 to 5.5 0.6 to 5.5 0.6 to 5.5 0.6 to 5.5 0.6 to 5.5 0.6 to 5.5
Maximum Output Current (A) 0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3 0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3 0.3|0.3|0.3|0.3|0.3|0.3|0.3 0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3 0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3 0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3 0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3 0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3 0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3 0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3|0.3
Minimum Input Voltage (V) 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
Maximum Input Voltage (V) 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5
Operating Supply Voltage (V) 2.5 to 5.5 2.5 to 5.5 2.5 to 5.5 2.5 to 5.5 2.5 to 5.5 2.5 to 5.5 2.5 to 5.5 2.5 to 5.5 2.5 to 5.5 2.5 to 5.5
Line Regulation 0.5%/V 0.5%/V 0.5%/V 0.5%/V 0.5%/V 0.5%/V 0.5%/V 0.5%/V 0.5%/V 0.5%/V
Load Regulation 0.5%(Typ) 0.5%(Typ) 0.5%(Typ) 0.5%(Typ) 0.5%(Typ) 0.5%(Typ) 0.5%(Typ) 0.5%(Typ) 0.5%(Typ) 0.5%(Typ)
Efficiency (%) 96 96 96 96 96 96 96 96 96 96
Minimum Operating Temperature (°C) -40 -40 -40 -40 -40 -40 -40 -40 -40 -40
Maximum Operating Temperature (°C) 85 85 85 85 85 85 85 125 125 125
Supplier Temperature Grade Extended Extended Extended Extended Extended Extended Extended Industrial Industrial Industrial
系列
Packaging		 Tape and Reel Tape and Reel Tape and Reel Tape and Reel Tape and Reel Tape and Reel Tape and Reel Reel Tape and Reel Tape and Reel
Pin Count 8 8 8 8 8 8 8 8 8 8
Standard Package Name DFN DFN DFN DFN DFN DFN DFN DFN DFN DFN
Supplier Package DFN EP DFN EP DFN EP DFN EP DFN EP DFN EP DFN EP DFN EP DFN EP DFN EP
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.75(Max) 0.75(Max) 0.75(Max) 0.75(Max) 0.75(Max) 0.75(Max) 0.75(Max) 0.75(Max) 0.75(Max) 0.75(Max)
Package Length 3 3 3 3 3 3 3 3 3 3
Package Width 2 2 2 2 2 2 2 2 2 2
PCB changed 8 8 8 8 8 8 8 8 8 8
Lead Shape No Lead No Lead No Lead No Lead No Lead No Lead No Lead No Lead No Lead No Lead

推荐资源

基于ARMv8架构的Cortex-A50系列处理器发布
ARM 官方就正式公布了新一代 64 位 Cortex-A50 系列处理器将于 2014 年问世的消息。这一系列中既有同等功耗下「性能为现有产品三倍」的 Cortex-A57，又有更为省电、全球最小的 64 位处理器 ......
wstt ARM技术
RF无线射频商业管理系统
　　随着我国加入WTO日期的日益临近，国内企业大多都面临着国际竞争的压力。尽管国内一部分大型企业在全国范围内建立了许多专卖店，形成了比较完善的营销网络体系，而且部分实施了ERP企业资源管 ......
JasonYoo 无线连接
STM8程序烧录
ST-LINK/V2一直在闪，但是最后提示出错，程序烧不进去。...
czx2014 stm32/stm8
wince 启动会自动加载哪些dll
它根据什么加载dll的？我的一个dll在release中生成了，但最后生成的NK.nb0中并没有会是什么原因呢？...
wangwenjia 嵌入式系统
G.729用哪个系列DSP做比较好
小弟还在读研 刚刚步入语音压缩 不知道用什么型号的DSP做G.729 求高手指教...
tenankesi555 DSP 与 ARM 处理器
设备EMC和RF测试遇到问题
问题描述如下： 一、硬件平台：高通APQ8053 二、设备说明： 1、金属机壳+主板+TP总成 2、天线：FPC+线缆，ipex连接器接到主板上，PFC贴到机壳下方的塑胶壳开窗 二、计划 1、涉及认证 ......
StonezZ 测试/测量
器件捷径:   S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SX SY SZ T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 TA TB TC TD TE TF TG TH TI TJ TK TL TM TN TO TP TQ TR TS TT TU TV TW TX TY TZ U0 U1 U2 U3 U4 U6 U7 U8 UA UB UC UD UE UF UG UH UI UJ UK UL UM UN UP UQ UR US UT UU UV UW UX UZ V0 V1 V2 V3 V4 V5 V6 V7 V8 V9 VA VB VC VD VE VF VG VH VI VJ VK VL VM VN VO VP VQ VR VS VT VU VV VW VX VY VZ W0 W1 W2 W3 W4 W5 W6 W7 W8 W9 WA WB WC WD WE WF WG WH WI WJ WK WL WM WN WO WP WR WS WT WU WV WW WY X0 X1 X2 X3 X4 X5 X7 X8 X9 XA XB XC XD XE XF XG XH XK XL XM XN XO XP XQ XR XS XT XU XV XW XX XY XZ Y0 Y1 Y2 Y4 Y5 Y6 Y9 YA YB YC YD YE YF YG YH YK YL YM YN YP YQ YR YS YT YX Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z8 ZA ZB ZC ZD ZE ZF ZG ZH ZJ ZL ZM ZN ZP ZR ZS ZT ZU ZV ZW ZX ZY

热门器件

  1. T352B105K035A
  2. MF2207208OHM0.5%3PPM
  3. 8LT7L25B29PC
  4. SSB6TG201504
  5. RSB6VP28130111
  6. PT00P-20-24PY(072)
  7. ABC17DRST
  8. CL21L130JCAD
  9. BZX55C16D-35T/R
  10. P6SMB47A-AU_R1_000A1
  11. SDFL3216S5R6KTF
  12. 201007F1500T4E

开源项目推荐更多

  1. LT6657BHMS8-2.5 负分流模式基准的典型应用电路
  2. DN05033/D - 具有初级侧反馈的 12V 离线电源设计说明
  3. IS31LT3117 直接驱动 4 个 LED 灯串的典型应用
  4. 使用 Richtek Technology Corporation 的 RT7264E 的参考设计
  5. LT8494HFE 1.5MHz、12V 输出 SEPIC 转换器的典型应用电路
  6. ADP2302-EVALZ，ADP2302 评估板，2 A/3 A，20 V，非同步降压稳压器
  7. STR-NCP171-EVK：支持 Strata 的 NCP171 - 具有 0.6V 至 3.3V 固定输出电压的 80mA 双电源模式 LDO
  8. Protues仿真实例（8051）-8051+Leaf
  9. LDK130PU08R 0.8V、300mA 低静态电流极低噪声 LDO 的典型应用可调版本电路
  10. LTC2392-16 演示板，带有 LQFP-48 中的 LT6350 优化驱动器、5V 16 位 500ksps Int Ref 并行/串行 SAR ADC

热门活动更多

  1. 【有奖直播】TI 工业自动化与机器人功能安全解决方案线上研讨会
  2. 是德科技重磅新品发布会｜新一代无线测试利器VXT：开启 RF 与模拟 IQ 全链路测试
  3. 有奖直播 | 瑞萨 RA8T2 EtherCAT 双轴伺服控制方案
  4. 你晒单我买单2026第1期报名中，DigiKey得捷带您畅享好物！
  5. 免费申请《一本书讲透汽车功能安全：标准详解与应用实践》，挑战《ISO26262标准》共读，赢好礼
  6. 装备焕新月：e络盟Multicomp Pro系列产品，小投入，大升级 ―― 装备焕新惊喜体验
  7. MPS 机器人模块设计大赛报名重磅开启，锻造硬实力，让想法照进现实！
  8. 有奖直播：ADI BMS 硬件和软件设计指南
  10. 免费申请：红外定位摄像头SEN0158

热门文章更多

技术资料推荐更多

随便看看

  1. 基于ARMv8架构的Cortex-A50系列处理器发布
  2. RF无线射频商业管理系统
  3. STM8程序烧录
  4. wince 启动会自动加载哪些dll
  5. G.729用哪个系列DSP做比较好
  6. 设备EMC和RF测试遇到问题
  7. MATLAB第七课-向量图
  8. 【CN0094】利用AD5722 DAC提供12位、双通道、单极性/双极性电压输出
  9. TI 电源设计小贴士 22
  10. 【UFUN学习】学习之旅前奏

 
EEWorld订阅号

 
EEWorld服务号

 
汽车开发圈

 
机器人开发圈

About Us 关于我们 客户服务 联系方式 器件索引 网站地图 最新更新 手机版

站点相关： 大学堂 TI培训 Datasheet 电子工程 索引文件: 1899  1159  70  1048  2255  39  24  2  22  46 

器件索引   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

北京市海淀区中关村大街18号B座15层1530室 电话:(010)82350740 邮编：100190

电子工程世界版权所有 京B2-20211791 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号 Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved