LP5890 datasheet(2/72 Pages) TI

2 / 72 page

Table of Contents

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

2 Applications..................................................................... 1

3 Description.......................................................................1

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

5 Description (continued).................................................. 2

6 Pin Configuration and Functions...................................3

7 Specifications.................................................................. 5

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

7.2 ESD Ratings............................................................... 5

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

7.4 Thermal Information....................................................5

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

7.6 Timing Requirements..................................................9

7.7 Switching Characteristics............................................9

7.8 Typical Characteristics.............................................. 10

8 Detailed Description......................................................12

8.1 Overview................................................................... 12

8.2 Functional Block Diagram......................................... 13

8.3 Feature Description...................................................13

8.4 Device Functional Modes..........................................24

8.5 Continuous Clock Series Interface............................25

8.6 PWM Grayscale Control........................................... 30

8.7 Register Maps...........................................................33

9 Application and Implementation.................................. 47

9.1 Application Information............................................. 47

9.2 Typical Application.................................................... 47

10 Power Supply Recommendations..............................55

11 Layout........................................................................... 56

11.1 Layout Guidelines................................................... 56

11.2 Layout Example...................................................... 56

12 Device and Documentation Support..........................60

12.1 Receiving Notification of Documentation Updates..60

12.2 Support Resources................................................. 60

12.3 Trademarks.............................................................60

12.4 Electrostatic Discharge Caution..............................60

12.5 Glossary..................................................................60

13 Mechanical, Packaging, and Orderable

Information.................................................................... 61

4 Revision History

DATE

REVISION

NOTES

July 2021

Initial release.

5 Description (continued)

The LP5890 implements a high speed transmission interface to support high device count daisy-chained and

high refresh rate while minimizing electrical-magnetic interference (EMI). The device supports up to 50-MHz

SCLK and up to 160-MHz GCLK (internal). Meanwhile, the device integrates enhanced circuits and intelligent

algorithms to solve the various display challenges in multiple LED matrix applications: Upper and downside

ghosting, Non-uniformity in low grayscale, Coupling, and Caterpillar caused by open or short LEDs, which make

the LP5890 a perfect choice in such applications.

The LP5890 also implements LED open/weak short/short detections and removals during operations and can

also report this information to the accompanying digital processor.

LP5890

SLVSGD5 – JULY 2021

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