Datasheet Texas Instruments TPS54478RTET — 数据表

制造商Texas Instruments
系列TPS54478
零件号TPS54478RTET
Datasheet Texas Instruments TPS54478RTET

具有打ic电流限制的2.95V至6V输入,4A同步降压SWIFT™转换器16-WQFN -40至150

数据表

TPS54478 2.95-V to 6-V Input, 4-A Output, 2-MHz, Synchronous Step-Down Switcher With Integrated FETs (SWIFTв„ў) datasheet
PDF, 2.0 Mb, 修订版: A, 档案已发布: Nov 15, 2016
从文件中提取

价格

状态

Lifecycle StatusActive (Recommended for new designs)
Manufacture's Sample AvailabilityYes

打包

Pin16
Package TypeRTE
Industry STD TermWQFN
JEDEC CodeS-PQFP-N
Package QTY250
CarrierSMALL T&R
Device Marking54478
Width (mm)3
Length (mm)3
Thickness (mm).75
Pitch (mm).5
Max Height (mm).8
Mechanical Data下载

参数化

Control ModeCurrent Mode
Duty Cycle(Max)98 %
Iout(Max)4 A
Iq(Typ)0.035 mA
Operating Temperature Range-40 to 150 C
Package GroupWQFN
RatingCatalog
Regulated Outputs1
Special FeaturesEnable,Frequency Synchronization,Power Good,Pre-Bias Start-Up,Synchronous Rectification,Tracking,UVLO Adjustable
Switching Frequency(Max)2000 kHz
Switching Frequency(Min)200 kHz
TypeConverter
Vin(Max)6 V
Vin(Min)2.95 V
Vout(Max)4.5 V
Vout(Min)0.6 V

生态计划

RoHSCompliant

设计套件和评估模块

  • Evaluation Modules & Boards: TPS54478EVM-037
    Evaluation Module for TPS54478 Synchronous Step-Down Converter with Pre-bias Start-Up
    Lifecycle Status: Active (Recommended for new designs)

应用须知

  • Minimizing Output Ripple During Startup
    PDF, 675 Kb, 档案已发布: Jun 22, 2017
    A buck DC/DC switching converter has a minimum on-time at which it can operate. This limits theminimum output voltage a converter can regulate to while keeping a fixed frequency. The limitation of theminimum on-time is often only considered for the steady-state output voltage; however, when the outputvoltage ramps up, in most cases the output voltage ramps up from 0 V. When the converter tri
  • Calculating Efficiency
    PDF, 175 Kb, 档案已发布: Feb 19, 2010
    This application report provides a step-by-step procedure for calculating buck converter efficiency and power dissipation at operating points not provided by the data sheet.
  • Understanding Thermal Dissipation and Design of a Heatsink
    PDF, 59 Kb, 档案已发布: May 4, 2011
    Power dissipation performance must be well understood prior to integrating devices on a printed-circuit board (PCB) to ensure that any given device is operated within its defined temperature limits. When a device is running, it consumes electrical energy that is transformed into heat. Most of the heat is typically generated by switching devices like MOSFETs, ICs, etc. This application report discu
  • Semiconductor and IC Package Thermal Metrics (Rev. C)
    PDF, 201 Kb, 修订版: C, 档案已发布: Apr 19, 2016

模型线

系列: TPS54478 (2)

制造商分类

  • Semiconductors > Power Management > Non-isolated DC/DC Switching Regulator > Step-Down (Buck) > Buck Converter (Integrated Switch)