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TPS5420-EP_09

更新时间： 2024-11-20 11:49:59
品牌 Logo 应用领域
德州仪器 - TI 转换器输入元件
页数 文件大小 规格书
22页 613K
描述
2-A WIDE-INPUT-RANGE STEP-DOWN SWIFT™ CONVERTER

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TPS5420-EP_09 数据手册

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TPS5420-EP  
www.ti.com  
SLVS717–DECEMBER 2006  
2-A WIDE-INPUT-RANGE STEP-DOWN SWIFT™ CONVERTER  
FEATURES  
•
•
•
•
Fixed 500-kHz Switching Frequency for Small  
Filter Size  
•
Controlled Baseline  
Improved Line Regulation and Transient  
Response by Input Voltage Feed Forward  
–
One Assembly/Test Site, One Fabrication  
Site  
System Protected by Overcurrent Limiting and  
Thermal Shutdown  
•
Enhanced Diminishing Manufacturing Sources  
(DMS) Support  
-55°C to 125°C Operating Junction  
Temperature Range  
•
•
•
•
Enhanced Product-Change Notification  
(1)  
Qualification Pedigree  
•
•
Available in Small 8-Pin SOIC Package  
Wide Input Voltage Range: 5.5 V to 35 V  
For SWIFT™ Documentation, Application  
Reports, and Design Software, See the TI  
Website at www.ti.com/swift  
Up to 2-A Continuous (3-A Peak) Output  
Current  
•
•
•
High Efficiency up to 95% Enabled by 110-mΩ  
Integrated MOSFET Switch  
APPLICATIONS  
•
Wide Output Voltage Range: Adjustable Down  
to 1.22 V with 1.5% Initial Accuracy  
Consumer: Set-Top Boxes, DVDs, LCD  
Displays  
Industrial and Car Audio Power Supplies  
Battery Chargers, High-Power LED Supplies  
12-V/24-V Distributed Power Systems  
Internal Compensation Minimizes External  
Parts Count  
•
•
•
(1) Component qualification in accordance with JEDEC and  
industry standards to ensure reliable operation over an  
extended temperature range. This includes, but is not limited  
to, Highly Accelerated Stress Test (HAST) or biased 85/85,  
temperature cycle, autoclave or unbiased HAST,  
electromigration, bond intermetallic life, and mold compound  
life. Such qualification testing should not be viewed as  
justifying use of this component beyond specified  
performance and environmental limits.  
DESCRIPTION/ORDERING INFORMATION  
As a member of the SWIFT™ family of dc/dc regulators, the TPS5420 is a high-output-current PWM converter  
that integrates a low-resistance high-side N-channel MOSFET. Included on the substrate with the listed features  
is a high-performance voltage error amplifier that provides tight voltage regulation accuracy under transient  
conditions, an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V, an internally  
set slow-start circuit to limit inrush currents, and a voltage feed-forward circuit to improve the transient response.  
Using the ENA pin, shutdown supply current is reduced to 18 µA, typically. Other features include an active high  
enable, overcurrent protection, and thermal shutdown. To reduce design complexity and external component  
count, the TPS5420 feedback loop is internally compensated.  
The TPS5420 device is available in an easy to use 8-pin SOIC package. TI provides evaluation modules and the  
SWIFT Designer Software tool to aid in quickly achieving high-performance power-supply designs to meet  
aggressive equipment development cycles.  
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.  
SWIFT is a trademark of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2006, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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