Datasheet Texas Instruments TLC5940

Manufacturer	Texas Instruments
Series	TLC5940

Datasheets

Detailed Description

The TLC5940 is a 16-channel, constant-current sink LED driver.

Each channel has an individually adjustable 4096-step grayscale PWM brightness control and a 64-step, constant-current sink (dot correction). The dot correction adjusts the brightness variations between LED channels and other LED drivers. The dot correction data is stored in an integrated EEPROM. Both grayscale control and dot correction are accessible through a serial interface. A single external resistor sets the maximum current value of all 16 channels.

The TLC5940 features two error information circuits. The LED open detection (LOD) indicates a broken or disconnected LED at an output terminal. The thermal error flag (TEF) indicates an overtemperature condition.

Packaging

Parametrics

Parameters / Models	TLC5940NT	TLC5940NTG4	TLC5940PWP	TLC5940PWPG4	TLC5940PWPR	TLC5940PWPRG4	TLC5940QPWPREP	TLC5940QRHBREP	TLC5940RHB	TLC5940RHBR	TLC5940RHBRG4
MSL Rating/Peak Reflow			-		Level-2-260C-1 YEAR					Level-2-260C-1 YEAR
Material Type			Production		Production					Production
Operating Temperature Range (°C)			-40 to 85		-40 to 85					-40 to 85
Package Carrier			TUBE		LARGE T&R					LARGE T&R
Package Quantity					2000					3000
Product Status			OBSOLETE		ACTIVE					ACTIVE
REACH Status			\u2014		Yes					Yes
RoHS Compliant			\u2014		Yes					Yes

Application Notes

• Download
  TLC5940 One Wire Control--Eliminating Microprocessor Control for Integr LED Driv
  PDF, 410 Kb, File published: Sep 25, 2006
  LED drivers such as the TLC5940 provide many integrated features that require a microprocessor interface to use. When these features are not needed, the TLC5940 can be configured with a single-wire interface for simple on/off control. This provides a low-cost solution to drive multiple LEDs with tight current matching while still allowing for PWM dimming in applications such as backlighting or gen
• Download
  TLC5940 PWM dimming provides superior color quality in LED video displays
  PDF, 215 Kb, File published: Apr 18, 2006
• Download
  TLC5940 dot correction compensates for variations in LED brightness
  PDF, 175 Kb, File published: Oct 10, 2005
• Download
  LED Display System Module Using Cascading TLC5940 Devices
  PDF, 496 Kb, File published: Jul 6, 2006
  Described in this document are application ideas and reference designs for the TLC5940 LED driver. The following application example shows the building of a basic module of an LED display system using a cascading connection on n TLC5940 devices connected to a controller. The reference design implements three TLC5940 devices to drive 16 LEDs.
• Download
  Using the TLC5940 with Higher LED Supply Voltages and Series LEDs
  PDF, 353 Kb, File published: Aug 20, 2007
  This application report describes how to accommodate higher LED supply voltages and increase the number of series LEDs that the TLC5940 can drive.
• Download
  Grayscale and Dot-Corrected LED Display Using TLC5941 (Rev. A)
  PDF, 198 Kb, Revision: A, File published: Mar 5, 2008
  The TLC5941 LED driver uses a serial data interface to receive grayscale and dot correction data. This application report discusses the hardware and firmware to drive the TLC5941 with a MSP430F427 microcontroller.
• Download
  LED Driver--Paralleled Outputs Provide High Current Outputs
  PDF, 957 Kb, File published: Sep 25, 2006
  This application report describes how to use the TLC5922, TLC5923, and TLC5924 to drive high-current LEDs. These ICs are designed to provide 16 individually controllable constant-current sinks. However, the 16 outputs can be connected in parallel to increase the current drive capability. Paralleling the outputs of these ICs allows the TLC5922, TLC5923, and TLC5924 to drive high-power LEDs such as
• Download
  Hardware Design Considerations for a Wireless LED based Display Design
  PDF, 682 Kb, File published: Jun 11, 2014
  Scoreboards have different purposes with various features. Scoreboards are typically used for displaying scores of a game played between two teams. These games can be a timed or an untimed event. The application described in this application report creates a multi-sport scoreboard that is cost efficient, portable, and easy to use. The display values on the scoreboard are transmitted wirelessly.

Model Line

Manufacturer's Classification

• Power management > LED drivers > RGB LED drivers