TPS92640_15 Datasheet, PDF (2/37 Pages) Texas Instruments – Synchronous Buck Controllers for Precision Dimming LED Drivers

TPS92640, TPS92641
SNVS902A – OCTOBER 2012 – REVISED OCTOBER 2015
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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 .......................................... 6
6.6 Typical Characteristics .............................................. 8
7 Detailed Description ............................................ 10
7.1 Overview ................................................................. 10
7.2 Functional Block Diagram ....................................... 10
7.3 Feature Description................................................. 11
7.4 Device Functional Modes........................................ 18
8 Application and Implementation ........................ 19
8.1 Application Information............................................ 19
8.2 Typical Applications ............................................... 22
9 Power Supply Recommendations...................... 27
10 Layout................................................................... 28
10.1 Layout Guidelines ................................................. 28
10.2 Layout Example .................................................... 28
10.3 EMI and Noise Considerations ............................. 29
11 Device and Documentation Support ................. 30
11.1 Related Links ........................................................ 30
11.2 Community Resources.......................................... 30
11.3 Trademarks ........................................................... 30
11.4 Electrostatic Discharge Caution ............................ 30
11.5 Glossary ................................................................ 30
12 Mechanical, Packaging, and Orderable
Information ........................................................... 30
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (October 2012) to Revision A
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
2
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