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LP5891 Datasheet(PDF) 23 Page - Texas Instruments

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Part # LP5891
Description  LP5891 48 Current Sources, 64 Scans, Common Cathode LED Matrix Driver
PDF  74 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LP5891 Datasheet(HTML) 23 Page - Texas Instruments

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Figure 7-14 shows the steps to read LED Short information. Wait at least one sub-period time between Step2
and Step3 command.
Figure 7-14. Steps to Read LED Short Information
7.3.5.4.3 LSD Caterpillar Removal
Figure 7-15 shows the LSD caterpillar issue caused by short LED. Suppose the LED0-1 is a short LED. When it
scans to the line1 and the OUT1 is turned off, the OUT1 voltage is the same with scan line0 voltage because of
the short path of the LED0-1. At this time, there is a current path from the line0 to the GND through the LED1-1
and SW1-1, which causes LED1-1 light unwanted.
www.ti.com
LP5891
SLDS269A – MARCH 2022 – REVISED MAY 2022
Copyright © 2022 Texas Instruments Incorporated
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