TLC5951-DIE Datasheet, PDF (1/5 Pages) Texas Instruments – 24-CHANNEL, 12-BIT PWM LED DRIVER WITH 7-BIT DOT CORRECTION AND 3-GROUP, 8-BIT GLOBAL BRIGHTNESS CONTROL

TLC5951-DIE
www.ti.com
SBVS210 – OCTOBER 2012
24-CHANNEL, 12-BIT PWM LED DRIVER WITH 7-BIT DOT CORRECTION
AND 3-GROUP, 8-BIT GLOBAL BRIGHTNESS CONTROL
FEATURES
1
• 24-Channel Constant-Current Sink Output
• Current Capability
• Selectable Grayscale (GS) Control With PWM:
12-Bit (4096 Step), 10-Bit (1024 Step), 8-Bit
(256 Step)
• Three Independent Grayscale Clocks for Three
Color Groups
• Dot Correction (DC): 7-Bit (128 Step)
• Global Brightness Control (BC) for Each Color
Group: 8-Bit (256 Step)
• Auto Display Repeat Function
• Independent Data Port for GS, BC and DC Data
• Communication Path Between Each Data Port
• LED Power-Supply Voltage
• V_CC = 3.0 V to 5.5 V
• Constant-Current Accuracy:
– Channel-to-Channel
– Device-to-Device
• CMOS Logic Level I/O
• Data Transfer Rate
• Grayscale Control Clock
• Continuous Base LED Open Detection (LOD)
• Continuous Base LED Short Detection (LSD)
• Thermal Shutdown (TSD) With Auto Restart
• Grouped Delay to Prevent Inrush Current
APPLICATIONS
• Full-Color LED Displays
• LED Signboards
DESCRIPTION
The TLC5951 is a 24-channel, constant-current sink driver. Each channel has an individually-adjustable, 4096-
step, pulse width modulation (PWM) grayscale (GS) brightness control and 128 step constant-current dot
correction (DC). The dot correction adjusts brightness deviation between channels and other LED drivers. The
output channels are grouped into three groups of eight channels. Each channel group has a 256-step global
brightness control (BC) function and an individual grayscale clock input.
GS, DC, and BC data are accessible via a serial interface port. DC and BC can be programmed via a dedicated
serial interface port.
The TLC5951 has three error detection circuits for LED open detection (LOD), LED short detection (LSD), and
thermal error flag (TEF). LOD detects a broken or disconnected LED while LSD detects a shorted LED. TEF
indicates an over-temperature condition.
PRODUCT
TLC5951
PACKAGE
DESIGNATOR
TD
ORDERING INFORMATION⁽¹⁾
PACKAGE
ORDERABLE PART NUMBER
Bare die in waffle pack⁽²⁾
TLC5951TDA2
TLC5951TDA3
PACKAGE QUANTITY
10
96
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Processing is per the Texas Instruments commercial production baseline and is in compliance with the Texas Instruments Quality
Control System in effect at the time of manufacture. Electrical screening consists of DC parametric and functional testing at room
temperature only. Unless otherwise specified by Texas Instruments AC performance and performance over temperature is not
warranted. Visual Inspection is performed in accordance with MIL-STD-883 Test Method 2010 Condition B at 75X minimum.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated