LP5891 datasheet(2/69 Pages) TI

2 / 69 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......................................... 12

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

8.4 Device Functional Modes..........................................25

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

8.6 PWM Grayscale Control........................................... 31

8.7 Register Maps...........................................................34

9 Application and Implementation.................................. 49

9.1 Application Information............................................. 49

9.2 Typical Application.................................................... 49

9.3 Power Supply Recommendations.............................55

9.4 Layout....................................................................... 55

10 Device and Documentation Support..........................60

10.1 Documentation Support ......................................... 60

10.2 Receiving Notification of Documentation Updates..60

10.3 Support Resources................................................. 60

10.4 Trademarks.............................................................60

10.5 Electrostatic Discharge Caution..............................60

10.6 Glossary..................................................................60

11 Mechanical, Packaging, and Orderable

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

4 Revision History

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

Changes from Revision * (August 2022) to Revision A (December 2022)

Page

• Changed device status from Advance Information to Production Data.............................................................. 1

5 Description (continued)

The LP5891-Q1 is a highly integrated common cathode matrix LED display driver with 48 constant current

sources and 16 scanning FETs. Besides driving 16 × 16 and 32 × 32 RGB LED pixels as LP5890, three

LP5891-Q1 devices are capable of driving 48 × 48 RGB LED pixels and stacking four LP5891-Q1 devices

can drive 64 × 64 RGB LED pixels. To achieve low power consumption, the device supports separated power

supplies for the red, green, and blue LEDs by its common cathode structure. Furthermore, the operation power

of the LP5891-Q1 is significantly reduced by ultra-low operation voltage range (Vcc down to 2.5 V) and ultra-low

operation current (Icc down to 3.6 mA).

The LP5891-Q1 implements a high speed rising-edge 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 (external) and up to 160-MHz GCLK (internal). Meanwhile, the device integrates enhanced

circuits and intelligent algorithms to solve the various display challenges in Narrow Pixel Pitch (NPP) LED

display applications and mini and micro-LED products: dim at the first scan line, upper and downside ghosting,

non-uniformity in low grayscale, coupling, caterpillar caused by open or short LEDs, which make the LP5891-Q1

a perfect choice in such applications.

The LP5891-Q1 also implements LED open/weak short/short detections and removals during operations and

can also report those information out to the accompanying digital processor.

LP5891-Q1

SNVSC61A – AUGUST 2022 – REVISED DECEMBER 2022

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