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 > LT3641IFE#PBF
PDF数据手册
文档预览

LT3641IFE#PBF

产品描述Conv DC-DC 4V to 42V Synchronous Step Down Dual-Out 1.265V to 40.97V 1.3A/1.3A Automotive 28-Pin TSSOP EP Tube
文件大小454KB，共28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

LT3641IFE#PBF概述

Conv DC-DC 4V to 42V Synchronous Step Down Dual-Out 1.265V to 40.97V 1.3A/1.3A Automotive 28-Pin TSSOP EP Tube

LT3641IFE#PBF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)350 to 2500
Switching RegulatorYes
Number of Outputs2
Output Voltage (V)1.265 to 40.97
Maximum Output Current (A)1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3
Minimum Input Voltage (V)4
Maximum Input Voltage (V)42
Operating Supply Voltage (V)4 to 42
Typical Quiescent Current (uA)275
Line Regulation0.001%/V(Typ)
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)125
Supplier Temperature GradeIndustrial
系列
Packaging		Tube
Pin Count28
Standard Package NameSOP
Supplier PackageTSSOP EP
MountingSurface Mount
Package Height1.05(Max)
Package Length9.8(Max)
Package Width4.5(Max)
PCB changed28
Lead ShapeGull-wing

文档预览

下载PDF文档
FEATURES
n
LT3641
Dual Monolithic Buck
Regulator with Power-On
Reset and Watchdog Timer
DESCRIPTION
The LT
®
3641 is a dual channel, current mode monolithic buck
switching regulator with a power-on reset and a watchdog
timer. Both regulators are synchronized to a single oscillator
with an adjustable frequency (350kHz to 2.5MHz). At light
loads, both regulators operate in low ripple Burst Mode
®
to maintain high efficiency and low output ripple.
The high voltage channel is a nonsynchronous buck with
an internal 2.4A top switch that operates from an input
of 4V to 42V and input transient protection to 55V. The
low voltage channel operates from an input of 2.5V to
5.5V. Internal synchronous power switches provide high
efficiency without the need of external Schottky diode.
Both channels have cycle-by-cycle current limit, providing
protection against shorted outputs.
The power-on reset and watchdog timeout periods are
both adjustable using external capacitors. The window
mode watchdog timer flags when the μP pulses group
too close together or too far apart.
The LT3641 is available in a 28-pin 4mm
×
5mm QFN
package and 28-pin TSSOP package. Both packages have
an exposed pad for low thermal resistance.
n
n
n
n
n
n
n
n
n
n
n
High Voltage Buck Regulator:
4V to 42V Operating Range
1.3A Output Current
Input Transient Protection to 55V
Low Voltage Synchronous Buck Regulator:
2.5V to 5.5V Input Voltage Range
1.1A Output Current
Synchronizable, Adjustable 350kHz to 2.5MHz
Switching Frequency
Programmable Power-On Reset Timer
Programmable Window Mode Watchdog Timer
Typical Quiescent Current: 290μA
Short-Circuit Robust
Programmable Soft-Start
Low Shutdown Current: I
Q
< 1μA
Thermal Shutdown
Available in Thermally Enhanced 28-Lead
(4mm
×
5mm) QFN and 28-Lead TSSOP Packages
APPLICATIONS
n
n
Industrial Power Supplies
Automotive Electronic Control Units
L,
LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
TYPICAL APPLICATION
2MHz 5V/0.8A and 3.3V/0.5A Step Down Regulators
0.22μF
V
IN
7V TO 42V*
10μF
EN/UVLO V
IN
SW
SYNC
WDE
PGOOD2
V
OUT1
100k
100k
RST1
RST2
WDO
WDI
CWDT
CPOR
1.5nF
LT3641
V
IN2
EN2
SW2
226k
RT GND SS2
FB2
SS1
1nF
1nF
3641 TA01a
4.7μH
BST SW1
DA
FB1
301k
HV Channel Efficiency,
2MHz, V
OUT1
= 5V
V
OUT1
5V/0.8A
22μF
85
EFFICIENCY (%)
EFFICIENCY (%)
90
V
IN
= 12V
95
LV Channel Efficiency,
2MHz, V
OUT2
= 3.3V
90
V
IN2
= 5V
100k
85
80
μP
2.2μH
V
OUT2
3.3V/0.5A
22μF
80
75
75
49.9k
1.5nF
32.4k
70
0
0.2
0.4 0.6 0.8 1.0
V
OUT1
CURRENT (A)
1.2
1.4
70
0
0.2
0.4
0.6
0.8
V
OUT2
CURRENT (A)
1.0
1.2
3641 TA01b
3641 TA01c
* FOR INPUT VOLTAGES ABOVE 42V RESTRICTIONS APPLY
3641fa
1

LT3641IFE#PBF相似产品对比

LT3641IFE#PBF LT3641EFE#PBF LT3641EFE#TRPBF LT3641EUFD#PBF LT3641EUFD#TRPBF LT3641HFE#PBF LT3641HFE#TRPBF LT3641IFE#TRPBF LT3641IUFD#PBF LT3641IUFD#TRPBF
描述 Conv DC-DC 4V to 42V Synchronous Step Down Dual-Out 1.265V to 40.97V 1.3A/1.3A Automotive 28-Pin TSSOP EP Tube Conv DC-DC 4V to 42V Synchronous Step Down Dual-Out 1.265V to 40.97V 1.3A/1.3A Automotive 28-Pin TSSOP EP Tube Conv DC-DC 4V to 42V Synchronous Step Down Dual-Out 1.265V to 40.97V 1.3A/1.3A Automotive 28-Pin TSSOP EP T/R Conv DC-DC 4V to 42V Synchronous Step Down Dual-Out 1.265V to 40.97V 1.3A/1.3A Automotive 28-Pin QFN EP Tube Conv DC-DC 4V to 42V Synchronous Step Down Dual-Out 1.265V to 40.97V 1.3A/1.3A Automotive 28-Pin QFN EP T/R Conv DC-DC 4V to 42V Synchronous Step Down Dual-Out 1.265V to 40.97V 1.3A/1.3A Automotive 28-Pin TSSOP EP Tube Conv DC-DC 4V to 42V Synchronous Step Down Dual-Out 1.265V to 40.97V 1.3A/1.3A Automotive 28-Pin TSSOP EP T/R Conv DC-DC 4V to 42V Synchronous Step Down Dual-Out 1.265V to 40.97V 1.3A/1.3A Automotive 28-Pin TSSOP EP T/R Conv DC-DC 4V to 42V Synchronous Step Down Dual-Out 1.265V to 40.97V 1.3A/1.3A Automotive 28-Pin QFN EP Tube Conv DC-DC 4V to 42V Synchronous Step Down Dual-Out 1.265V to 40.97V 1.3A/1.3A Automotive 28-Pin QFN EP T/R
欧盟限制某些有害物质的使用 Compliant Compliant Compliant Compliant Compliant Compliant Compliant Compliant Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Part Status Active Active Active Active Active Active Active Active 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) 350 to 2500 350 to 2500 350 to 2500 350 to 2500 350 to 2500 350 to 2500 350 to 2500 350 to 2500 350 to 2500 350 to 2500
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) 1.265 to 40.97 1.265 to 40.97 1.265 to 40.97 1.265 to 40.97 1.265 to 40.97 1.265 to 40.97 1.265 to 40.97 1.265 to 40.97 1.265 to 40.97 1.265 to 40.97
Maximum Output Current (A) 1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3 1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3 1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3 1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3 1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3 1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3 1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3 1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3 1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3 1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3|1.3
Minimum Input Voltage (V) 4 4 4 4 4 4 4 4 4 4
Maximum Input Voltage (V) 42 42 42 42 42 42 42 42 42 42
Operating Supply Voltage (V) 4 to 42 4 to 42 4 to 42 4 to 42 4 to 42 4 to 42 4 to 42 4 to 42 4 to 42 4 to 42
Typical Quiescent Current (uA) 275 275 275 275 275 275 275 275 275 275
Line Regulation 0.001%/V(Typ) 0.001%/V(Typ) 0.001%/V(Typ) 0.001%/V(Typ) 0.001%/V(Typ) 0.001%/V(Typ) 0.001%/V(Typ) 0.001%/V(Typ) 0.001%/V(Typ) 0.001%/V(Typ)
Minimum Operating Temperature (°C) -40 -40 -40 -40 -40 -40 -40 -40 -40 -40
Maximum Operating Temperature (°C) 125 125 125 125 125 150 150 125 125 125
Supplier Temperature Grade Industrial Extended Extended Extended Extended Automotive Automotive Industrial Industrial Industrial
系列
Packaging		 Tube Tube Tape and Reel Tube Tape and Reel Tube Tape and Reel Tape and Reel Tube Tape and Reel
Pin Count 28 28 28 28 28 28 28 28 28 28
Standard Package Name SOP SOP SOP QFN QFN SOP SOP SOP QFN QFN
Supplier Package TSSOP EP TSSOP EP TSSOP EP QFN EP QFN EP TSSOP EP TSSOP EP TSSOP EP QFN EP QFN EP
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 1.05(Max) 1.05(Max) 1.05(Max) 0.75(Max) 0.75(Max) 1.05(Max) 1.05(Max) 1.05(Max) 0.75(Max) 0.75(Max)
Package Length 9.8(Max) 9.8(Max) 9.8(Max) 5 5 9.8(Max) 9.8(Max) 9.8(Max) 5 5
Package Width 4.5(Max) 4.5(Max) 4.5(Max) 4 4 4.5(Max) 4.5(Max) 4.5(Max) 4 4
PCB changed 28 28 28 28 28 28 28 28 28 28
Lead Shape Gull-wing Gull-wing Gull-wing No Lead No Lead Gull-wing Gull-wing Gull-wing No Lead No Lead
HTS 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 - 8542.39.00.01

推荐资源

谁能发BSP给我
我想要2440的BSP，WINCE5 ，最好能是WINCE6 发到我邮箱rudang741@163.com 标明论坛ID，我好加分。谢谢。 发一个10分，如果多人，每人10分，发到我结贴为止。谢谢。...
hardstudy 嵌入式系统
ARM串口通讯丢包问题，急！！！
各位，我最近调试一个东东，LPC2114用串口Uart0与电脑通讯。上位机程序是VC++6.0编的。工作顺序如下：首先电脑定时发送8字节读数指令，2114收到后返回8字节数据。问题是无论2114内的串口 ......
ws840914 ARM技术
PCB板材有铅无铅工艺的差别
时接待用户的时候多多少少都会遇到一些问题,最多的用户咨询就是关于制版速度快.质量是否能保证.其实一家工厂生产线足够成熟的时候速度是不会影响质量的.影响质量的因素主要是原材料的选 ......
捷配pcb打样工厂 PCB设计
半桥电路的工作原理及注意问题（转）
在PWM和电子镇流器当中，半桥电路发挥着重要的作用。半桥电路由两个功率开关器件组成，它们以图腾柱的形式连接在一起，并进行输出，提供方波信号。本篇文章将为大家介绍半桥电路的工作原 ......
qwqwqw2088 模拟与混合信号
【挑战Energia-ID00A】Energia解密
新年快快到了放个大招吧，我们来解密Energia。 【概述】结合TI独有的MSP430 ValueLine系列的LauchPad，全面介绍Energia开发工具的使用和开发。 总目录 1 TI-LauchPad和Energia 2 TI-MSP43 ......
北方 TI技术论坛
MPU6050设置X,Y，Z轴的阈值中断唤醒STM32F103
刚刚接触MPU6050，使用STM32F103C8T6驱动MPU6050，需要判断做收拾动作，但是还要省电，所以，我想到的是利用MPU6050的中断来唤醒STM32的待机模式，问题来了，刚刚玩MPU6050不了解很多东西，STM3 ......
xmb6954757 stm32/stm8
器件捷径:   00 01 02 03 04 05 06 07 08 09 0A 0C 0F 0J 0L 0M 0R 0S 0T 0Z 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 1H 1K 1M 1N 1P 1S 1T 1V 1X 1Z 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 2G 2K 2M 2N 2P 2Q 2R 2S 2T 2W 2Z 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 3G 3H 3J 3K 3L 3M 3N 3P 3R 3S 3T 3V 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4M 4N 4P 4S 4T 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5E 5G 5H 5K 5M 5N 5P 5S 5T 5V 60 61 62 63 64 65 66 67 68 69 6A 6C 6E 6F 6M 6N 6P 6R 6S 6T 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7M 7N 7P 7Q 7V 7W 7X 80 81 82 83 84 85 86 87 88 89 8A 8D 8E 8L 8N 8P 8S 8T 8W 8Y 8Z 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9F 9G 9H 9L 9S 9T 9W

热门器件

  1. 284TBBK103B26AT
  2. HW-22-10-G-D-200-230
  3. 630PPSA183J28T
  4. 660-023N17S6-01
  5. MART100KP120AE3/TR
  6. HCHP1020L2672FGT
  7. HVC5020K3523BTTR
  8. MJHS-06L2-21D-018-1A23
  9. AME8501CEFTCD28
  10. BZX784C51
  11. GLZ47
  12. 1.5SMCJ64-AU_R1_000A1

开源项目推荐更多

  1. 使用 NXP Semiconductors 的 PCF8881 的参考设计
  2. VND7050AJ评估板
  3. LTC3615MPFE 双路 3A 同步降压型 DC/DC 转换器的典型应用，具有外部补偿功能
  4. 使用 Analog Devices 的 LTC6262HMS8 的参考设计
  5. L78L33AC正压稳压器Edit boost电路的典型应用
  6. TCR5SB29U、200mA、2.9V输出电压CMOS低压降稳压器的典型应用
  7. LTC2862AIS8-2 ±60V 20Mbps 电平转换器/隔离器的典型应用
  8. LTC4075EDD 演示板，双输入锂离子充电器，适配器输入 = 4.5V - 6V，USB 输入 4.35V - 5.5V，锂离子 + = 800mA，（500mA USB）
  9. AM2F-0509SZ 9V 2 瓦 DC-DC 转换器的典型应用
  10. RTL8822BS模块外围应用参考电路及驱动资料

热门活动更多

  1. 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
  2. 有奖直播 | 瑞萨 RA8T2 EtherCAT 双轴伺服控制方案
  3. 你晒单我买单2026第1期报名中，DigiKey得捷带您畅享好物！
  4. 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
  5. 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
  6. 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！
  7. 有奖直播：ADI BMS 硬件和软件设计指南
  9. 免费申请：红外定位摄像头SEN0158
  10. 有奖直播：借助PXI与NI LabVIEW+ 套件加速电子产品自动化测试

热门文章更多

技术资料推荐更多

  1. 汽车音响原理及改装实用技术
  2. 高端电流检测--差动放大器和电流检测放大器比较
  3. TD-LTE网络覆盖性能分析
  4. 安防监控用热成像仪
  5. labview软件的大型应用程序与多人开发指南
  6. XAPP105 - CPLD VHDL介绍
  7. LED航标灯无线数据采集与传输系统
  8. 模块电源并联使用时均流问题资料
  9. 低轨卫星与GPS导航卫星联合定轨研究
  10. proe5.0野火版下载(中文版免费下载)

随便看看

  1. 谁能发BSP给我
  2. ARM串口通讯丢包问题，急！！！
  3. PCB板材有铅无铅工艺的差别
  4. 半桥电路的工作原理及注意问题（转）
  5. 【挑战Energia-ID00A】Energia解密
  6. MPU6050设置X,Y，Z轴的阈值中断唤醒STM32F103
  7. 串口接收数据问题
  8. WinCE6.0 和 Wince5.0 差别很大，请介绍一下WinCE6.0 (包括: 目录结构....)
  9. EVC中怎样使弹出的对话框不能移动？
  10. 【我的blueNRG】1 初步体验

 
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: 467  168  1154  476  286  10  4  24  6  42 

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