Datasheet Texas Instruments TPS54478RTER — 数据表
| 制造商 | Texas Instruments |
| 系列 | TPS54478 |
| 零件号 | TPS54478RTER |
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
状态
| Lifecycle Status | Active (Recommended for new designs) |
| Manufacture's Sample Availability | Yes |
打包
| Pin | 16 |
| Package Type | RTE |
| Industry STD Term | WQFN |
| JEDEC Code | S-PQFP-N |
| Package QTY | 3000 |
| Carrier | LARGE T&R |
| Device Marking | 54478 |
| Width (mm) | 3 |
| Length (mm) | 3 |
| Thickness (mm) | .75 |
| Pitch (mm) | .5 |
| Max Height (mm) | .8 |
| Mechanical Data | 下载 |
参数化
| Control Mode | Current Mode |
| Duty Cycle(Max) | 98 % |
| Iout(Max) | 4 A |
| Iq(Typ) | 0.035 mA |
| Operating Temperature Range | -40 to 150 C |
| Package Group | WQFN |
| Rating | Catalog |
| Regulated Outputs | 1 |
| Special Features | Enable,Frequency Synchronization,Power Good,Pre-Bias Start-Up,Synchronous Rectification,Tracking,UVLO Adjustable |
| Switching Frequency(Max) | 2000 kHz |
| Switching Frequency(Min) | 200 kHz |
| Type | Converter |
| Vin(Max) | 6 V |
| Vin(Min) | 2.95 V |
| Vout(Max) | 4.5 V |
| Vout(Min) | 0.6 V |
生态计划
| RoHS | Compliant |
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 StartupPDF, 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 EfficiencyPDF, 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 HeatsinkPDF, 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)
- TPS54478RTER TPS54478RTET
制造商分类
- Semiconductors > Power Management > Non-isolated DC/DC Switching Regulator > Step-Down (Buck) > Buck Converter (Integrated Switch)