Driver. TLC5971 Datasheet

TLC5971 Datasheet PDF


Part

TLC5971

Description

12-Channel 16-Bit Enhanced Spectrum PWM RGB LED Driver

Manufacture

etcTI

Page 30 Pages
Datasheet
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TLC5971 Datasheet
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TLC5971
SBVS146D – AUGUST 2010 – REVISED DECEMBER 2015
TLC5971 12-Channel, 16-Bit, Enhanced Spectrum, PWM, RGB, LED Driver With 3.3-V
Linear Regulator
1 Features
1 12 Constant-Current Sink Output Channels
• Current Capability: 60 mA Per Channel
• Grayscale (GS) Control With Enhanced Spectrum
PWM:
16-Bit (65536 Steps)
• Global Brightness Control (BC):
7-Bit (128 Steps) for Each Color Group
• Power-Supply Voltage Range:
– Internal Linear Regulator: 6 V to 17 V
– Direct Power Supply: 3 V to 5.5 V
• LED Supply Voltage: Up to 17 V
• Constant-Current Accuracy:
– Channel-to-Channel = ±1% (Typical)
– Device-to-Device = ±1% (Typical)
• Data Transfer Rate: 20 MHz
• Linear Voltage Regulator: 3.3 V
• Auto Display Repeat Function
• Display Timing Reset Function
• Internal and External Selectable GS Clock
• Thermal Shutdown (TSD) With Auto Restart
• Unlimited Device Cascading
• Operating Temperature Range: –40°C to +85°C
2 Applications
RGB LED Cluster Lamp Displays
3 Description
The TLC5971 device is a 12-channel, constant-
current sink driver. Each output channel has
individually adjustable currents with 65536 PWM
grayscale (GS) steps. Also, each color group can be
controlled by 128 constant-current sink steps with the
global brightness control (BC) function. GS control
and BC are accessible through a two-wire signal
interface. The maximum current value for each
channel is set by a single external resistor. All
constant-current outputs are turned off when the IC is
in an overtemperature condition.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TLC5971
HTSSOP (20)
VQFN (24)
6.50 mm × 4.40 mm
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Circuit Example (Internal Linear Regulator Using VCC = 6 V to 17 V)
Power
Supply
(6 V to 17 V)
VCC
GND
1 mF
Device
GND
VCC
VREG
OUTR0
Optional
1 mF
Device
GND
VCC
VREG
OUTR0
Optional
IREF
OUTG0
IREF
OUTG0
DATA
(1)
Controller CLK
GND
SDTI
SCKI
OUTG3
OUTB3
SDTO
SCKO
SDTI
SCKI
(1) The output voltage range is from 0 V to 3.3 V.
NOTE: The number of LEDs in series changes, depending on the VCC voltage.
OUTG3
OUTB3
SDTO
SCKO
1
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.

TLC5971 Datasheet
TLC5971
SBVS146D – AUGUST 2010 – REVISED DECEMBER 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 5
6.6 Switching Characteristics .......................................... 7
6.7 Dissipation Ratings ................................................... 8
6.8 Typical Characteristics ............................................ 11
7 Parametric Measurement Information ............... 13
7.1 Test Circuits ............................................................ 13
7.2 Pin Equivalent Input and Output Schematics ......... 13
8 Detailed Description ............................................ 14
8.1 Overview ................................................................. 14
8.2 Functional Block Diagram ....................................... 14
8.3 Feature Description................................................. 15
8.4 Device Functional Modes........................................ 18
8.5 Programming........................................................... 19
9 Application and Implementation ........................ 26
9.1 Application Information............................................ 26
9.2 Typical Application .................................................. 26
9.3 System Examples ................................................... 31
10 Power Supply Recommendations ..................... 32
11 Layout................................................................... 32
11.1 Layout Guidelines ................................................. 32
11.2 Layout Example .................................................... 32
12 Device and Documentation Support ................. 33
12.1 Community Resources.......................................... 33
12.2 Trademarks ........................................................... 33
12.3 Electrostatic Discharge Caution ............................ 33
12.4 Glossary ................................................................ 33
13 Mechanical, Packaging, and Orderable
Information ........................................................... 33
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (September 2012) to Revision D
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
Changes from Revision B (June 2012) to Revision C
Page
• Changed typical application circuit (internal linear regulator), added footnote 1.................................................................... 1
• Changed typical application circuit (direct power), added footnote 1................................................................................... 31
• Added typical application circuit example (direct power supplying VCC = 3 V to 5.5 V, VLED = 15 V), added footnote 1 ..... 31
Changes from Revision A (December 2010) to Revision B
Page
• Changed IOLKG parameter test conditions in Electrical Characteristics table.......................................................................... 5
• Updated Figure 23................................................................................................................................................................ 15
• Changed bit 217 description in Table 5................................................................................................................................ 24
Changes from Original (August 2010) to Revision A
Page
• Changed Global Brightness Control bullet in Features .......................................................................................................... 1
• Changed typical application circuit (internal linear regulator)................................................................................................. 1
• Moved Thermal Shutdown and Noise Reduction sections................................................................................................... 18
• Updated bit names for BCR, BCG, and BCB in Table 5 ...................................................................................................... 24
• Changed typical application circuit (direct power) ................................................................................................................ 31
2 Submit Documentation Feedback
Product Folder Links: TLC5971
Copyright © 2010–2015, Texas Instruments Incorporated


Features Datasheet pdf Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TLC5971 SBVS146D – AUGUST 2010 – REVISED DECEMBER 2015 TLC5971 12-Channel, 16-Bit, Enhanced Spectrum, PWM, RGB, LED Driver With 3.3-V Linear Regulator 1 Features •1 12 Constant- Current Sink Output Channels • Curren t Capability: 60 mA Per Channel • Gra yscale (GS) Control With Enhanced Spect rum PWM: 16-Bit (65536 Steps) • Globa l Brightness Control (BC): 7-Bit (128 S teps) for Each Color Group • Power-Su pply Voltage Range: – Internal Linear Regulator: 6 V to 17 V – Direct Powe r Supply: 3 V to 5.5 V • LED Supply V oltage: Up to 17 V • Constant-Current Accuracy: – Channel-to-Channel = ±1 % (Typical) – Device-to-Device = ±1% (Typical) • Data Transfer Rate: 20 M Hz • Linear Voltage Regulator: 3.3 V • Auto Display Repeat Function • Di splay Timing Reset Function • Interna l and External Selectable GS Clock • Thermal Shutdown (TSD) With Auto Restart • Unlimited Device Cascading • Operating Temperature Range: –4.
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