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TPS54620
ZHCS308F –MAY 2009 –REVISED MAY 2017
www.ti.com.cn
版权 © 2009–2017, Texas Instruments Incorporated
目目录录
1 特特性性.......................................................................... 1
2 应应用用.......................................................................... 1
3 说说明明.......................................................................... 1
4 修修订订历历史史记记录录 ........................................................... 2
5 Pin Configurations and Functions....................... 4
6 Specifications......................................................... 5
6.1 Absolute Maximum Ratings ..................................... 5
6.2 ESD Ratings.............................................................. 5
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information.................................................. 6
6.5 Electrical Characteristics........................................... 6
6.6 Typical Characteristics.............................................. 8
7 Detailed Description............................................ 11
7.1 Overview ................................................................. 11
7.2 Functional Block Diagram ....................................... 12
7.3 Feature Description................................................. 12
7.4 Device Functional Modes........................................ 19
8 Application and Implementation ........................ 24
8.1 Application Information............................................ 24
8.2 Typical Application ................................................. 24
9 Power Supply Recommendations...................... 34
10 Layout................................................................... 34
10.1 Layout Guidelines ................................................. 34
10.2 Layout Example .................................................... 35
10.3 Estimated Circuit Area .......................................... 36
10.4 Thermal Consideration.......................................... 36
11 器器件件和和文文档档支支持持 ..................................................... 37
11.1 器件支持................................................................ 37
11.2 接收文档更新通知 ................................................. 37
11.3 社区资源................................................................ 37
11.4 商标 ....................................................................... 37
11.5 静电放电警告......................................................... 37
11.6 Glossary................................................................ 37
12 机机械械、、封封装装和和可可订订购购信信息息....................................... 37
4 修修订订历历史史记记录录
注：之前版本的页码可能与当前版本有所不同。
Changes from Revision E (June 2016) to Revision F Page
• 将数据表文本更新至最新的文档和转换标准 ........................................................................................................................... 1
• 删除了针对 SwitcherPro™ 软件工具的全部参考，因为它不再适用于本部分 ......................................................................... 1
• Moved storage temperature ratings to the Absolute Maximum Ratings table........................................................................ 5
• Changed Handling Ratings table to ESD Ratings.................................................................................................................. 5
• Changed RHY package to RHL in the Thermal Information table ......................................................................................... 6
• Changed RGY values in the Thermal Information table......................................................................................................... 6
• Updated packages in the last bullet point of Layout Guidelines........................................................................................... 34
• Added information to the last list item in Layout Guidelines................................................................................................. 34
Changes from Revision D (October 2014) to Revision E Page
• Added recommended layout guide lines for sensitive components and the output sensing trace to the Layout
Guidelines section. ............................................................................................................................................................... 34
• 已添加
接收文档更新通知
和社区资源部分。 ........................................................................................................................ 37
Changes from Revision C (April 2011) to Revision D Page
• 增添了器件信息表、处理定额值表、建议运行条件表和热性能信息表.................................................................................... 1
• Changed the Absolute Maximum Ratings for BOOT-PH, MAX value From: 7 V To: 7.7 V .................................................. 5
• Changed Equation 28 From: C7(nF) To: C5(nF).................................................................................................................. 27
Changes from Revision B (October 2010) to Revision C Page
• Changed From separate RHL and RGY packages To a combined RHL and RGY package ................................................ 4
