TPS54228_16 Datasheet, PDF (2/29 Pages) Texas Instruments – 4.5-V to 18-V Input, 2-A Synchronous Step-Down Converter With Eco-Mode

TPS54228
SLVSAU1E – MAY 2011 – REVISED AUGUST 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 6
7 Detailed Description .............................................. 8
7.1 Overview ................................................................... 8
7.2 Functional Block Diagram ......................................... 8
7.3 Feature Description................................................... 8
7.4 Device Functional Modes........................................ 10
8 Application and Implementation ........................ 11
8.1 Application Information............................................ 11
8.2 Typical Application .................................................. 11
9 Power Supply Recommendations...................... 14
10 Layout................................................................... 15
10.1 Layout Guidelines ................................................. 15
10.2 Layout Examples................................................... 15
10.3 Thermal Considerations ........................................ 16
11 Device and Documentation Support ................. 17
11.1 Documentation Support ........................................ 17
11.2 Receiving Notification of Documentation Updates 17
11.3 Community Resources.......................................... 17
11.4 Trademarks ........................................................... 17
11.5 Electrostatic Discharge Caution ............................ 17
11.6 Glossary ................................................................ 17
12 Mechanical, Packaging, and Orderable
Information ........................................................... 17
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision D (January 2013) to Revision E
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section .................................................................................................. 1
• Deleted Ordering Information table, see POA at the end of the data sheet........................................................................... 3
Changes from Revision C (March 2012) to Revision D
Page
• Added the 10-pin DRC package to the data sheet ................................................................................................................ 1
• Added the DRC package to the Device Information section .................................................................................................. 3
• Added Figure 20 ................................................................................................................................................................... 16
Changes from Revision B (December 2011) to Revision C
Page
• Removed SWIFT™ from the data sheet title.......................................................................................................................... 1
Changes from Revision A (October 2011) to Revision B
Page
• Added the 8-pin D package to the data sheet ....................................................................................................................... 1
Changes from Original (May 2011) to Revision A
Page
• Added R_EN - EN pin resistance to GND to the LOGIC THRESHOLD section of the ELECTRICAL
CHARACTERISTICS table ..................................................................................................................................................... 5
2
Submit Documentation Feedback
Product Folder Links: TPS54228
Copyright © 2011–2016, Texas Instruments Incorporated