LP5520_16 Datasheet, PDF (2/46 Pages) Texas Instruments – RGB Backlight LED Driver

LP5520
SNVS440B – MAY 2007 – REVISED MARCH 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Function ........................... 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 RGB Driver Electrical Characteristics (ROUT, GOUT,
BOUT Outputs) .......................................................... 5
6.7 Logic Interface Characteristics.................................. 6
6.8 Magnetic Boost DC-DC Converter Electrical
Characteristics ........................................................... 6
6.9 I²C Timing Parameters ............................................. 7
6.10 SPI Timing Requirements ....................................... 7
6.11 Typical Characteristics ............................................ 8
7 Detailed Description .............................................. 9
7.1 Overview ................................................................... 9
7.2 Functional Block Diagram ......................................... 9
7.3 Feature Description................................................... 9
7.4 Device Functional Modes........................................ 18
7.5 Programming........................................................... 22
7.6 Register Maps ......................................................... 28
8 Application and Implementation ........................ 33
8.1 Application Information............................................ 33
8.2 Typical Applications ............................................... 33
9 Power Supply Recommendations...................... 37
10 Layout................................................................... 37
10.1 Layout Guidelines ................................................. 37
10.2 Layout Example .................................................... 38
11 Device and Documentation Support ................. 39
11.1 Device Support...................................................... 39
11.2 Documentation Support ........................................ 39
11.3 Community Resources.......................................... 39
11.4 Trademarks ........................................................... 39
11.5 Electrostatic Discharge Caution ............................ 39
11.6 Glossary ................................................................ 39
12 Mechanical, Packaging, and Orderable
Information ........................................................... 40
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (May 2013) to Revision B
Page
• Changed "R, G and B" to "Red, Green, and Blue"................................................................................................................. 1
• Deleted "Non-Linear Temperature Compensation" and "Ambient Light Compensation" from Applications ......................... 1
• Added Device Information and Pin Configuration and Functions sections, ESD Ratings and Thermal Information
tables, Feature Description, Device Functional Modes, Application and Implementation, Power Supply
Recommendations, Layout, Device and Documentation Support, and Mechanical, Packaging, and Orderable
Information sections................................................................................................................................................................ 1
• Changed "MAIN, SUB" to " ROUT, GOUT, BOUT"................................................................................................................ 4
• Changed "come" to "are loaded" .......................................................................................................................................... 12
• Changed ", and also the variable" to ". The variable parameter" ......................................................................................... 18
• Changed "makes possible" to "allows" ................................................................................................................................. 19
• Changed "read" to "loaded" .................................................................................................................................................. 19
• Changed "The stand-alone mode must be inhibited in automatic and manual modes by writing the control bit
<brc_off> high and by keeping BRC input low." to new text .............................................................................................. 19
Changes from Original (April 2013) to Revision A
Page
• Changed layout of National Data Sheet to TI format ........................................................................................................... 32
2
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