SDO

VDD

R-EXT

OE(ED2)

LE(ED1)

CLK

SDI

CONTROL

LOGIC

I/O REGULATOR

CONFIGURATION

LATCHES

OUTPUT DRIVER and

ERROR DETECTION

16-BIT SHIFT

REGISTER

8

16

8

16

16

16

OUT15

OUT14

OUT0

OUT1

16-BIT OUTPUT

LATCH

TLC5926, TLC5927

www.ti.com

SLVS677C – JULY 2008 – REVISED OCTOBER 2015

9 Detailed Description

9.1 Overview

The TLC592x is designed for LED displays and LED lighting applications with open-load, shorted-load, and

overtemperature detection, and constant-current control. The TLC592x contains a 16-bit shift register and data

latches, which convert serial input data into parallel output format. At the TLC592x output stage, 16 regulated-

current ports provide uniform and constant current for driving LEDs within a wide range of VF (Forward Voltage)

variations. Used in systems designed for LED display applications (e.g., LED panels), TLC592x provides great

flexibility and device performance. Users can adjust the output current from 5 mA to 120 mA through an external

at the output port. The high clock frequency, 30 MHz, also satisfies the system requirements of high-volume data

transmission.

9.2 Functional Block Diagram

9.3 Feature Description

9.3.1 Open-Circuit Detection Principle

status can be read as an error status code in the Special mode. For open-circuit error detection, a channel must

be on.

Copyright © 2008–2015, Texas Instruments Incorporated

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Product Folder Links: TLC5926 TLC5927