TLC5926-Q1_16 Datasheet, PDF (13/36 Pages) Texas Instruments – TLC592x-Q1 16-Channel Constant-Current LED Sink Drivers

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9 Detailed Description
TLC5926-Q1, TLC5927-Q1
SLVS973A – SEPTEMBER 2009 – REVISED JULY 2015
9.1 Overview
The TLC592x-Q1 is designed for LED displays and LED lighting applications with open-load, shorted-load, and
overtemperature detection, and constant-current control. The TLC592x-Q1 contains a 16-bit shift register and
data latches, which convert serial input data into parallel output format. At the TLC592x-Q1 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 (that is, LED panels),
TLC592x-Q1 provides great flexibility and device performance. Users can adjust the output current from 5 mA to
120 mA through an external resistor, R-EXT, which gives flexibility in controlling the light intensity of LEDs.
TLC592x-Q1 is designed for up to 17 V 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
OUT0 OUT1 OUT14 OUT15
R-EXT
I/O REGULATOR
VDD
OE(ED2)
LE(ED1)
CONTROL
LOGIC
16
OUTPUT DRIVER and
ERROR DETECTION
16
16
16-BIT OUTPUT
LATCH
CONFIGURATION
LATCHES
CLK
16
16
SDI
16-BIT SHIFT
REGISTER
SDO
16
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Product Folder Links: TLC5926-Q1 TLC5927-Q1