LP8550

SNVS657E – SEPTEMBER 2010 – REVISED SEPTEMBER 2014

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Table of Contents

1

Features .................................................................. 1

8

Detailed Description ............................................ 11

8.1

Overview ................................................................. 11

2

Applications ........................................................... 1

8.2

Functional Block Diagram ....................................... 12

3

Description ............................................................. 1

8.3

Feature Description................................................. 12

4

Revision History..................................................... 2

8.4

Device Functional Modes........................................ 21

5

Device Default Values ........................................... 3

8.5

Programming .......................................................... 22

6

Pin Configuration and Functions ......................... 4

8.6

Register Maps ......................................................... 26

7

Specifications......................................................... 5

9

Application and Implementation ........................ 36

7.1

Absolute Maximum Ratings ...................................... 5

9.1

Application Information............................................ 36

7.2

Handling Ratings ...................................................... 5

9.2

Typical Applications ............................................... 36

7.3

Recommended Operating Conditions ....................... 5

10

Power Supply Recommendations ..................... 40

7.4

Thermal Information .................................................. 6

11

Layout................................................................... 40

7.5

Electrical Characteristics.......................................... 6

11.1

Layout Guidelines ................................................. 40

7.6

Boost Converter Electrical Characteristics ............. 6

11.2

Layout Examples................................................... 41

7.7

LED Driver Electrical Characteristics ....................... 7

12

Device and Documentation Support ................. 43

7.8

PWM Interface Characteristics ................................ 7

12.1

Trademarks ........................................................... 43

7.9

Undervoltage Protection .......................................... 8

12.2

Electrostatic Discharge Caution ............................ 43

7.10

Logic Interface Characteristics............................... 8

12.3

Glossary ................................................................ 43

7.11

I2C Serial Bus Timing Parameters (SDA, SCLK) .. 8

13

Mechanical, Packaging, and Orderable

7.12

Typical Characteristics ............................................ 9

Information ........................................................... 43

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision D (November 2013) to Revision E

Page

•

Changed formatting to match new TI datasheet guidelines; added Device Information and Handling Ratings tables,

Power Supply Recommendations, Layout, and Device and Documentation Support sections; moved some curves to

Application Curves section, reformatted Detailed Description and Application and Implementation sections, adding

additional content. ................................................................................................................................................................. 1

Changes from Revision C (May 2013) to Revision D

Page

•

Added note re EEPROM ...................................................................................................................................................... 25

•

Added note re: EEPROM ..................................................................................................................................................... 30

2

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