LM3697_15 Datasheet, PDF (2/43 Pages) Texas Instruments – High-Efficiency Three-String White LED Driver

LM3697
SNOSCS2C – NOVEMBER 2013 – 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 .................................................. 4
6.5 Electrical Characteristics .......................................... 5
6.6 Timing Requirements ................................................ 6
6.7 Typical Characteristics .............................................. 7
7 Detailed Description .............................................. 8
7.1 Overview ................................................................... 8
7.2 Functional Block Diagram ......................................... 8
7.3 Feature Descriptions ................................................. 9
7.4 Device Functional Modes........................................ 12
7.5 Register Maps ......................................................... 16
8 Application and Implementation ........................ 20
8.1 Application Information............................................ 20
8.2 Typical Applications ................................................ 20
8.3 Initialization Set Up ................................................. 30
9 Power Supply Recommendations...................... 31
10 Layout................................................................... 32
10.1 Layout Guidelines ................................................. 32
10.2 Layout Example .................................................... 35
11 Device and Documentation Support ................. 36
11.1 Device Support...................................................... 36
11.2 Related Documentation ....................................... 36
11.3 Community Resources.......................................... 36
11.4 Trademarks ........................................................... 36
11.5 Electrostatic Discharge Caution ............................ 36
11.6 Glossary ................................................................ 36
12 Mechanical, Packaging, and Orderable
Information ........................................................... 36
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (April 2014) to Revision C
Page
• Changed format of Device Information; add footnote and "MAX" ......................................................................................... 1
• Changed Handling Ratings table to ESD Ratings table format; move storage temp to Abs Max table................................. 4
• Added additional Thermal Information ................................................................................................................................... 4
• Added subsection High-Speed Mode .................................................................................................................................. 15
Changes from Revision A (December 2013) to Revision B
Page
• Changed to new TI datasheet standards; added Handling Ratings table; added 2 ambient temperature specs to
I_HVLED and one to I_{MATCH_HV} ..................................................................................................................................................... 1
• Changed title from Pin Configurations to Terminal Functions and all references from "pins" to "terminals" ......................... 3
• Changed change "terminal" back to "pin" per latest documentation standard; add "Type" column to Pin Functions
table ....................................................................................................................................................................................... 3
• Changed Timing information from Elec Char table Timing Requirements ............................................................................. 6
• Changed Functional Description section to Detailed Description section ............................................................................. 8
• Changed Applications Information section to Application and Implementation ................................................................... 21
• Changed Typical Characteristics from own section into subsection of Specifications ........................................................ 23
• Added new Power Supply Recommendations section ........................................................................................................ 31
• Changed Layout section to include separate Layout Example ........................................................................................... 32
• Added new Device and Documentation Support section and Mechanical, Packaging and Orderable paragraph ............. 36
Changes from Original (November 2013) to Revision A
Page
• Added graph ......................................................................................................................................................................... 10
• Added Auto-Frequency Threshold Settings table................................................................................................................. 10
• Added graphic....................................................................................................................................................................... 11
• Added captions to graphs .................................................................................................................................................... 30
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