Driver. TLC5951 Datasheet

TLC5951 Datasheet PDF


Part

TLC5951

Description

24-Channel 12-Bit PWM LED Driver

Manufacture

etcTI

Page 30 Pages
Datasheet
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TLC5951 Datasheet
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TLC5951
SBVS127E – MARCH 2009 – REVISED JULY 2017
TLC5951 24-Channel, 12-Bit PWM LED Driver With 7-Bit Dot Correction
and 3-Group, 8-Bit Global Brightness Control
1 Features
1 24-Channel Constant-Current Sink Output
• Current Capability: 40 mA
• 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 and BC and DC
Data
• Communication Path Between Each Data Port
• LED Power-Supply Voltage up to 15 V
• VCC = 3 V to 5.5 V
• Constant-Current Accuracy:
– Channel-to-Channel = ±1.5%
– Device-to-Device = ±3%
• CMOS Logic Level I/O
• Data Transfer Rate: 30 MHz
• 33-MHz 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
• Operating Ambient Temperature: –40°C to 85°C
• Packages: HTSSOP-38, QFN-40
2 Applications
• Full-Color LED Displays
• LED Signboards
3 Description
The TLC5951 device 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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
HTSSOP (38)
12.50 mm × 6.20 mm
TLC5951
VQFN (40)
6.00 × 6.00 mm
WQFN (40)
6.00 × 6.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Circuit (Multiple Daisy-Chained TLC5951 Devices)
VLED
... ...
...
Controller
GSSIN
DCSIN
GSSCK
GSLAT
DCSCK
XBLNK
GSCKR
GSCKG
GCCKB
RIREF
... ...
OUTR0/G0/B0 . . . OUTR7/G7/B7
GSSIN
DCSIN
GSSOUT
DCSOUT
GSSCK
GSLAT
DCSCK
XBLNK
VCC
GSCKR
GSCKG
GSCKB
TLC5951
IC1
VCC
GND
IREF
RIREF
...
OUTR0/G0/B0 . . . OUTR7/G7/B7
GSSIN
GSSOUT
DCSIN
DCSOUT
GSSCK
GSLAT
DCSCK
XBLNK
VCC
GSCKR
GSCKG
GSCKB
TLC5951
ICn
VCC
GND
IREF
FLAGS
READ
7
1
Copyright © 2017, Texas Instruments Incorporated
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

TLC5951 Datasheet
TLC5951
SBVS127E – MARCH 2009 – REVISED JULY 2017
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (Continued) ........................................ 4
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 6
7.1 Absolute Maximum Ratings .................................... 6
7.2 ESD Ratings.............................................................. 6
7.3 Recommended Operating Conditions...................... 7
7.4 Thermal Information .................................................. 7
7.5 Electrical Characteristics.......................................... 8
7.6 Switching Characteristics....................................... 10
7.7 Typical Characteristics ............................................ 15
8 Parameter Measurement Information ................ 20
8.1 Pin Equivalent Input and Output Schematic
Diagrams.................................................................. 20
8.2 Test Circuits ............................................................ 20
9 Detailed Description ............................................ 21
9.1 Overview ................................................................. 21
9.2 Functional Block Diagram ....................................... 22
9.3 Feature Description................................................. 23
9.4 Device Functional Modes........................................ 23
10 Device and Documentation Support ................. 38
10.1 Receiving Notification of Documentation Updates 38
10.2 Community Resources.......................................... 38
10.3 Trademarks ........................................................... 38
10.4 Electrostatic Discharge Caution ............................ 38
10.5 Glossary ................................................................ 38
11 Mechanical, Packaging, and Orderable
Information ........................................................... 38
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision D (December 2013) to Revision E
Page
• Added WQFN package to the Device Information table......................................................................................................... 1
• Changed Typical Application Circuit diagram......................................................................................................................... 1
• Changed ordering of the OUTxy pin numbers in the Pin Functions table to match the pinout diagram ............................... 5
• Deleted ESD rating specifications from the Absolute Maximum Ratings table ..................................................................... 6
• Added ESD Ratings table to the data sheet........................................................................................................................... 6
• Added Thermal Information table to the data sheet ............................................................................................................... 7
• Deleted Dissipation Ratings table from the data sheet .......................................................................................................... 7
Changes from Revision C (August 2013) to Revision D
Page
• Added ΔIOLC5 and ΔIOLC6 parameters to Electrical Characteristics table ................................................................................ 9
• Added footnote 6 to footnote 9 in Electrical Characteristics table.......................................................................................... 9
Changes from Revision B (December 2009) to Revision C
Page
• Changed AC Characteristics, tWH0 and tWL0 parameter associated pin names ..................................................................... 7
• Updated Figure 3.................................................................................................................................................................. 12
• Updated Figure 4.................................................................................................................................................................. 13
• Updated Figure 7.................................................................................................................................................................. 15
• Updated Figure 33................................................................................................................................................................ 18
• Updated Figure 48................................................................................................................................................................ 35
• Changed description of Continuous Base LOD, LSD, and TEF section .............................................................................. 37
Changes from Revision A (April 2009) to Revision B
Page
• Changed product status from mixed to production data ........................................................................................................ 1
• Deleted footnote 1 from RHA pinout ...................................................................................................................................... 4
• Changed test conditions of tD8 in Switching Characteristics table........................................................................................ 10
2 Submit Documentation Feedback
Product Folder Links: TLC5951
Copyright © 2009–2017, Texas Instruments Incorporated


Features Datasheet pdf Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity TLC5951 SBVS127E – MARCH 2009 – REVISED JULY 2017 TLC5951 24-Chann el, 12-Bit PWM LED Driver With 7-Bit Do t Correction and 3-Group, 8-Bit Global Brightness Control 1 Features •1 24- Channel Constant-Current Sink Output Current Capability: 40 mA • Selecta ble Grayscale (GS) Control With PWM: 12 -Bit (4096 Step), 10-Bit (1024 Step), 8 -Bit (256 Step) • Three Independent G rayscale Clocks for Three Color Groups • Dot Correction (DC): 7-Bit (128 Ste p) • Global Brightness Control (BC) f or Each Color Group: 8-Bit (256 Step) Auto Display Repeat Function • Ind ependent Data Port for GS and BC and DC Data • Communication Path Between Ea ch Data Port • LED Power-Supply Volta ge up to 15 V • VCC = 3 V to 5.5 V Constant-Current Accuracy: – Channe l-to-Channel = ±1.5% – Device-to-Dev ice = ±3% • CMOS Logic Level I/O • Data Transfer Rate: 30 MHz • 33-MHz Grayscale Control Clock • Continuous Base LED-Open Detection (LO.
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