TPS54528_17 Datasheet, PDF (2/26 Pages) Texas Instruments – 4.5-V To 18-V Input, 5-A Synchronous Step-Down Converter With Eco-Mode

TPS54528
SLVSAY4C – JULY 2011 – REVISED MARCH 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Simplified Schematic............................................. 1
5 Revision History..................................................... 2
6 Terminal Configuration and Functions................ 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 Handling Ratings....................................................... 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information ................................................. 5
7.5 Electrical Characteristics........................................... 5
7.6 Timing Requirements - On-Time Timer Control........ 6
7.7 Typical Characteristics .............................................. 6
8 Detailed Description .............................................. 9
8.1 Overview ................................................................... 9
8.2 Functional Block Diagram ......................................... 9
8.3 Feature Description................................................... 9
8.4 Device Functional Modes........................................ 10
9 Applications and Implementation ...................... 12
9.1 Application Information............................................ 12
9.2 Typical Application ................................................. 12
10 Power Supply Recommendations ..................... 15
11 Layout................................................................... 15
11.1 Layout Guidelines ................................................. 15
11.2 Layout Example .................................................... 16
11.3 Thermal Information .............................................. 17
12 Device and Documentation Support ................. 18
12.1 Documentation Support ........................................ 18
12.2 Trademarks ........................................................... 18
12.3 Electrostatic Discharge Caution ............................ 18
12.4 Glossary ................................................................ 18
13 Mechanical, Packaging, and Orderable
Information ........................................................... 18
5 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (May 2012) to Revision C
Page
• Formatted data sheet to meet new template requirements ................................................................................................... 1
• Added Table of Contents, and moved Revision History to page 2. ...................................................................................... 3
• Moved ABS Max, Handling Ratings, ROC, Thermal Info, and Electrical Characteristics tables to the new
"Specifications" section. ......................................................................................................................................................... 4
• Added Maximum Power Dissipation graph............................................................................................................................. 8
• Added "Power Supply Recommendations" section ............................................................................................................. 15
• Added "Device and Documentation Support" section ......................................................................................................... 18
Changes from Revision A (January 2012) to Revision B
Page
• Changed t_OFF(MIN) From: 310 ns To: 330 ns............................................................................................................................ 6
Changes from Original (July 2011) to Revision A
Page
• Added CONDITIONS statement at the Typical Characteristics section heading ................................................................... 6
• Changed 2-µA to 6µA in Soft Start and Pre-Biased Soft Start subsection and denominator in equation 2....................... 9
2
Copyright © 2011–2014, Texas Instruments Incorporated
Product Folder Links: TPS54528