Driver. TLC59731 Datasheet

TLC59731 Datasheet PDF


Part

TLC59731

Description

3-Channel 8-Bit PWM LED Driver

Manufacture

etcTI

Page 30 Pages
Datasheet
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TLC59731 Datasheet
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TLC59731
SBVS222C – FEBRUARY 2013 – REVISED OCTOBER 2016
TLC59731
3-Channel, 8-Bit, PWM LED Driver With Single-Wire Interface (EasySet)
1 Features
1 Three Sink Current Channels
• Current Capability:
– 50 mA per Channel
• Grayscale (GS) Control With PWM:
– 8-Bit (256 Steps) With Simple Gamma
Correction
• Single-Wire Interface (EasySet™)
• Power-Supply (VCC) Voltage Range:
– No Internal Shunt Regulator Mode:
3 V to 5.5 V
– Internal Shunt Regulator Mode: 3 V to 6 V
• OUT Terminals Maximum Voltage: Up to 21 V
• Integrated Shunt Regulator
• Data Transfer Maximum Rate:
– Bits per Second (bps): 600 kbps
• Internal GS Clock Oscillator: 6 MHz (Typical)
• Display Repeat Rate: 3.1 kHz (Typical)
• Output Delay Switching to Prevent Inrush Current
• Unlimited Device Cascading
• Operating Temperature: –40°C to 85°C
2 Applications
RGB LED Cluster Lamp Displays
3 Description
The TLC59731 device is an easy-to-use, 3-channel,
50-mA sink current LED driver. The single-wire, 600-
kbps serial interface (EasySet) provides a solution for
minimizing wiring cost. The LED driver provides 8-bit
pulse width modulation (PWM) resolution and a
simple gamma correction feature. The display repeat
rate is achieved at 3.1 kHz (typical) with an integrated
6-MHz grayscale (GS) clock oscillator. The driver also
provides unlimited cascading capability.
Output sink current can be set by each external
resistor connected to the OUTn terminal in series.
The TLC59731 has an internal shunt regulator that
can be used for higher VCC power-supply voltage
applications.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TLC59731
SOIC (8)
4.90 mm × 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
LED
Lamp
Power
Supply
Device and
Controller
Power
Supply
Controller
Typical Application Circuit Example (No Internal Shunt Regulator Mode)
VLED
VCC
GND
OPEN
or GND
GND
TEST
Device
SDI
VCC
OUT0
OUT1
OUT2
SDO
Optional
OPEN
or GND
GND
TEST
Device
SDI
VCC
OUT0
OUT1
OUT2
SDO
Optional
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.

TLC59731 Datasheet
TLC59731
SBVS222C – FEBRUARY 2013 – REVISED OCTOBER 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 4
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ..................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 6
6.6 Switching Characteristics .......................................... 6
6.7 Typical Characteristics .............................................. 9
7 Parameter Measurement Information ................ 10
7.1 Pin-Equivalent Input and Output Schematic
Diagrams.................................................................. 10
7.2 Test Circuits ............................................................ 10
8 Detailed Description ............................................ 11
8.1 Overview ................................................................. 11
8.2 Functional Block Diagram ....................................... 11
8.3 Feature Description................................................. 12
8.4 Device Functional Modes........................................ 14
8.5 Programming........................................................... 16
8.6 Register Maps ......................................................... 20
9 Application and Implementation ........................ 21
9.1 Application Information............................................ 21
9.2 Typical Application .................................................. 21
9.3 System Examples ................................................... 22
9.4 Do's and Don'ts ....................................................... 23
10 Power Supply Recommendations ..................... 23
11 Layout................................................................... 23
11.1 Layout Guidelines ................................................. 23
11.2 Layout Example .................................................... 23
12 Device and Documentation Support ................. 24
12.1 Receiving Notification of Documentation Updates 24
12.2 Community Resources.......................................... 24
12.3 Trademarks ........................................................... 24
12.4 Electrostatic Discharge Caution ............................ 24
12.5 Glossary ................................................................ 24
13 Mechanical, Packaging, and Orderable
Information ........................................................... 24
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (October 2015) to Revision C
Page
• Deleted Constant Sink Current Value section ..................................................................................................................... 12
• Changed the Grayscale (GS) Control description for clarity ................................................................................................ 13
• Changed Grayscale (GS) Function (PWM Control) section: corrected number of bits throughout section and
corrected Table 2 accordingly .............................................................................................................................................. 14
• Added 2nd sentence to 3rd paragraph of Grayscale (GS) Function (PWM Control) section ............................................. 14
• Changed the PWM Control section to account for a 24-bit GS data latch instead of a 36-bit data latch ............................ 15
• Deleted the One-Wire Interface (EasySet) Data Writing Method section from the Device Functional Modes .................... 15
Changes from Revision A (April 2013) to Revision B
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
• Added Grayscale (GS) Control, EasySet and Shunt Regulator, and No Limit Cascading sections .................................... 13
• Changed Connector Design title .......................................................................................................................................... 13
• Changed Figure 12: changed OUTn traces GSDATA = 4093 and GSDATA = 4094 ......................................................... 15
2 Submit Documentation Feedback
Product Folder Links: TLC59731
Copyright © 2013–2016, Texas Instruments Incorporated


Features Datasheet pdf Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TLC59731 SBVS222C – FEBRUA RY 2013 – REVISED OCTOBER 2016 TLC597 31 3-Channel, 8-Bit, PWM LED Driver Wit h Single-Wire Interface (EasySet) 1 Fe atures •1 Three Sink Current Channels • Current Capability: – 50 mA per Channel • Grayscale (GS) Control With PWM: – 8-Bit (256 Steps) With Simple Gamma Correction • Single-Wire Inter face (EasySet™) • Power-Supply (VCC ) Voltage Range: – No Internal Shunt Regulator Mode: 3 V to 5.5 V – Intern al Shunt Regulator Mode: 3 V to 6 V • OUT Terminals Maximum Voltage: Up to 2 1 V • Integrated Shunt Regulator • Data Transfer Maximum Rate: – Bits pe r Second (bps): 600 kbps • Internal G S Clock Oscillator: 6 MHz (Typical) • Display Repeat Rate: 3.1 kHz (Typical) • Output Delay Switching to Prevent Inrush Current • Unlimited Device Cas cading • Operating Temperature: –40 °C to 85°C 2 Applications RGB LED Cluster Lamp Displays 3 Description The TLC59731 device is an easy-to-u.
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