5秒后页面跳转
捷配首页

Datasheet > LM20145
LM20145 PDF预览

LM20145

更新时间： 2024-11-12 02:58:23
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
29页 1267K
描述
5A PowerWise Adjustable Frequency Synchronous Buck Regulator

阅读下载

中文翻译

获取价格

LM20145 数据手册

 浏览型号LM20145的Datasheet PDF文件第2页浏览型号LM20145的Datasheet PDF文件第3页浏览型号LM20145的Datasheet PDF文件第4页浏览型号LM20145的Datasheet PDF文件第5页浏览型号LM20145的Datasheet PDF文件第6页浏览型号LM20145的Datasheet PDF文件第7页 
LM20145  
www.ti.com  
SNVS530E –OCTOBER 2007–REVISED MARCH 2013  
LM20145/LM20145Q 5A, PowerWise® Adjustable Frequency Synchronous Buck Regulator  
Check for Samples: LM20145  
1
FEATURES  
DESCRIPTION  
The LM20145 is a full featured adjustable frequency  
synchronous buck regulator capable of delivering up  
to 5A of continuous output current. The current mode  
control loop can be compensated to be stable with  
virtually any type of output capacitor. For most cases,  
compensating the device only requires two external  
components, providing maximum flexibility and ease  
of use. The device is optimized to work over the input  
voltage range of 2.95V to 5.5V making it suited for a  
wide variety of low voltage systems.  
2
•
Available in AEC-Q100 Temperature Grade 1  
Input Voltage Range 2.95V to 5.5V  
•
•
Accurate Current Limit Minimizes Inductor  
Size  
•
•
97% Peak Efficiency  
Adjustable Switching Frequency (250 kHz to  
750 kHz)  
•
•
•
•
•
•
•
•
32 mΩ Integrated FET Switches  
Starts up into Pre-Biased Loads  
Output Voltage Tracking  
The device features internal over voltage protection  
(OVP) and over current protection (OCP) circuits for  
increased system reliability. A precision enable pin  
and integrated UVLO allows the turn-on of the device  
to be tightly controlled and sequenced. Start-up  
inrush currents are limited by both an internally fixed  
and externally adjustable Soft-Start circuit. Fault  
detection and supply sequencing is possible with the  
integrated power good circuit.  
Peak Current Mode Control  
Adjustable Output Voltage down to 0.8V  
Adjustable Soft-Start with External Capacitor  
Precision Enable Pin with Hysteresis  
Integrated OVP, UVLO, Power Good and  
Thermal Shutdown  
The LM20145 is designed to work well in multi-rail  
power supply architectures. The output voltage of the  
device can be configured to track a higher voltage rail  
using the SS/TRK pin. If the output of the LM20145 is  
pre-biased at startup it will not sink current to pull the  
output low until the internal soft-start ramp exceeds  
the voltage at the feedback pin.  
•
HTSSOP 16-Pin Exposed Pad Package  
APPLICATIONS  
•
•
•
Simple to Design, High Efficiency Point of  
Load Regulation from a 5V or 3.3V Bus  
High Performance DSPs, FPGAs, ASICs and  
Microprocessors  
The frequency of this device can be adjusted from  
250 kHz to 750 kHz by connecting an external  
resistor from the RT pin to ground.  
Broadband, Networking and Optical  
Communications Infrastructure  
The LM20145 is offered in a 16-pin HTSSOP  
package with an exposed pad that can be soldered to  
the PCB, eliminating the need for bulky heatsinks.  
Typical Application Circuit  
L
LM20145  
V
OUT  
SW  
V
IN  
PVIN  
R
R
FB1  
EN  
C
IN  
R
F
FB  
C
OUT  
AVIN  
RT  
FB2  
PGOOD  
C
F
R
T
VCC  
COMP  
C
VCC  
SS/TRK  
R
C1  
PGND AGND  
C
SS  
C
C1  
(optional)  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2007–2013, Texas Instruments Incorporated  
1234567...29

中文翻译

下载PDF

LM20145 替代型号

型号 品牌 替代类型 描述 数据表
LM20144 TI

功能相似

 4A PowerWise Adjustable Frequency Synchronous Buck Regulator
LM20124 TI

功能相似

 4A, 1MHz PowerWise® Synchronous Buck Regulat
LM20134 TI

功能相似

 LM20134/LM20134Q 4A, PowerWise Synchronous Buck Regulator with Input

与LM20145相关器件

型号 品牌 获取价格 描述 数据表
LM20145_08 NSC

获取价格

 		5A, PowerWise㈢ Adjustable Frequency Synchrono
LM20145_15 TI

获取价格

 		5A PowerWise Adjustable Frequency Synchronous Buck Regulator
LM20145MH NSC

获取价格

 		5A, PowerWise㈢ Adjustable Frequency Synchrono
LM20145MH/NOPB TI

获取价格

 		5A PowerWise Adjustable Frequency Synchronous Buck Regulator
LM20145MHE NSC

获取价格

 		5A, PowerWise㈢ Adjustable Frequency Synchrono
LM20145MHE/NOPB TI

获取价格

 		5A PowerWise Adjustable Frequency Synchronous Buck Regulator
LM20145MHX NSC

获取价格

 		5A, PowerWise㈢ Adjustable Frequency Synchrono
LM20145MHX/NOPB NSC

获取价格

 		IC 8.1 A SWITCHING REGULATOR, 825 kHz SWITCHING FREQ-MAX, PDSO16, TSSOP-16, Switching Regu
LM20145MHX/NOPB TI

获取价格

 		5A PowerWise Adjustable Frequency Synchronous Buck Regulator
LM20145-Q1 TI

获取价格

 		5A PowerWise Adjustable Frequency Synchronous Buck Regulator

与LM20145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