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TLC5944 Status: ACTIVE

16-Channel, 12-Bit PWM LED Driver with 6-Bit Dot Correction and Pre-Charge FET

      
         
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Functional Block Diagram


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 TLC5940 TLC5941 TLC5942 TLC5943 TLC5944TLC5945 TLC5946 TLC59461 
Output Channels16  16  16  16  16  16  16  16  
PWM Dimming Steps4096  4096  4096  65536  4096  4096  4096  4096  
Analog Dimming Steps64  64  64  128  64  64  64  64  
Per Channel Drive(mA)120  80  50  50  60  80  40  40  
Ch to Ch Accuracy(Typ)(+/- %)1  1  1.5  1.5  1  1  1  1  
Data InputSerial  Serial  Serial  Serial  Serial  Serial  Serial  Serial  
Data Transfer Rate(Typ)(MHz)30  30  30  30  30  30  30  30  
Data Vin(Min)(V)3  3  3  3  3  3  3  3  
Data Vin(Max)(V)5.5  5.5  5.5  5.5  5.5  5.5  5.5  5.5  
LED Voltage(Max)(V)17  17  17  17  15  17  17  17  
Pin/Package28HTSSOP, 28PDIP, 32QFN  28HTSSOP, 28PDIP, 32QFN  28HTSSOP, 32QFN  28HTSSOP, 32QFN  28HTSSOP, 32QFN  28HTSSOP, 32QFN  28HTSSOP, 28TSSOP, 32QFN  28HTSSOP  
Approx. Price (US$) 1.90 | 1ku   1.65 | 1ku   1.75 | 1ku   2.00 | 1ku   2.00 | 1ku   1.75 | 1ku   1.40 | 1ku   1.65 | 1ku  
 SamplesSamplesSamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • TLC59116: 16-Bit Fast-Mode Pluse (FM+) I2C Bus Constant-Current LED Sink Driver
  • TLC5947: 24-Channel, 12-Bit PWM LED Driver with Internal Oscillator
  • TLC5940: 16-Channel LED Driver w/EEprom DOT Correction & Grayscale PWM Control

More Related Products

Product Information

Features

  • 16 Channels, Constant Current Sink Output
  • 60-mA Capability (Constant Current Sink)
  • 12-Bit (4096 Steps) Grayscale Control with PWM
  • 6-Bit (64 Steps) Dot Correction with Sink Current
  • Internal Pre-Charge FET to Prevent LED Ghosting Phenomenon on Multiplexed LED Systems
  • LED Power-Supply Voltage up to 15 V
  • VCC = 3.0 V to 5.5 V
  • Constant Current Accuracy:
    • Channel-to-Channel = ±1%
    • Device-to-Device = ±3%
  • CMOS Logic Level I/O
  • 30-MHz Data Transfer Rate
  • 33-MHz Grayscale Control Clock
  • Continuous Base LED Open Detection (LOD):
    • Detect LED opening and LED short to GND during display with auto output off function
  • Thermal Shutdown (TSD):
    • Automatic shutdown at over-temperature conditions
    • Restart under normal temperature
  • Pre-Thermal Warning (PTW):
    • High temperature operation alert
  • Readable Error Information:
    • LED Open Detection (LOD)
    • Thermal Error Flag (TEF)
    • Pre-Thermal Warning (PTW)
  • Noise Reduction:
    • 4-channel grouped delay to prevent inrush current
  • Operating Temperature: -40°C to +85°C
  • APPLICATIONS
    • Monochrome, Multicolor, Full-Color LED Displays Using Multiplexing System
    • LED Signboards Using Multiplexing System

Description

The TLC5944 is a 16-channel, constant current sink driver. Each channel is individually adjustable with 4096 pulse-width modulated (PWM) steps and 64 constant sink current (dot correction) steps. The dot correction (DC) adjusts for brightness variations between LEDs. Both grayscale (GS) control and DC are accessible via a common serial interface port. The maximum current value of all 16 channels can be set by a single external resistor.

The TLC5944 has an internal pre-charge FET to prevent the ghost-lighting phenomenon that occurs on multiplexed LED systems. The TLC5944 has three error detection circuits for LED open detection (LOD), a thermal error flag (TEF), and a pre-thermal warning (PTW). The LOD detects a broken or disconnected LED, and a shorted LED to GND during the display period. The TEF indicates a too-high temperature condition; when the TEF is set, all output drivers are turned off by the thermal shutdown (TSD) protection. Additionally, when the TEF is cleared, all output drivers are restarted. The PTW indicates that the IC is operating in a high temperature condition. The output drivers remain on when PTW is set.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSamples
TLC5944PWPACTIVE-40 to 852.20 | 1kuHTSSOP (PWP) | 28 View 50 | TUBEPurchase Samples
TLC5944PWPG4ACTIVE-40 to 852.20 | 1kuHTSSOP (PWP) | 28 View 50 | TUBEPurchase Samples
TLC5944PWPRACTIVE-40 to 852.00 | 1kuHTSSOP (PWP) | 28 View 2000 | LARGE T&R
TLC5944PWPRG4ACTIVE-40 to 852.00 | 1kuHTSSOP (PWP) | 28 View 2000 | LARGE T&R
TLC5944RHBRACTIVE-40 to 852.20 | 1kuQFN (RHB) | 32 View 3000 | LARGE T&RPurchase Samples
TLC5944RHBRG4ACTIVE-40 to 852.20 | 1kuQFN (RHB) | 32 View 3000 | LARGE T&RPurchase Samples
TLC5944RHBTACTIVE-40 to 852.40 | 1kuQFN (RHB) | 32 View 250 | SMALL T&R
TLC5944RHBTG4ACTIVE-40 to 852.40 | 1kuQFN (RHB) | 32 View 250 | SMALL T&R

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

  TI Inventory Status Reported Distributor Inventory
TLC5944PWPAs of 9:14 AM GMT, 03 Jul 2009As of 9:14 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 16 Weeks AmericasDigiKey  Available
TLC5944PWPG4As of 9:14 AM GMT, 03 Jul 2009As of 9:14 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 16 Weeks AmericasDigiKey  Available
TLC5944PWPRAs of 9:14 AM GMT, 03 Jul 2009As of 9:14 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasDigiKey 231
 Mouser Electronics >1k
 Newark >1k
 EuropeFarnell 5
TLC5944PWPRG4As of 9:14 AM GMT, 03 Jul 2009As of 9:14 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasDigiKey  Available
TLC5944RHBRAs of 9:14 AM GMT, 03 Jul 2009As of 9:14 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 16 Weeks AmericasDigiKey  Available
TLC5944RHBRG4As of 9:14 AM GMT, 03 Jul 2009As of 9:14 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 16 Weeks AmericasDigiKey  Available
TLC5944RHBTAs of 9:14 AM GMT, 03 Jul 2009As of 9:14 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 16 Weeks AmericasArrow 250
 Avnet 500
 DigiKey 676
 Mouser Electronics 250
 Newark 150
 EuropeFarnell 100
TLC5944RHBTG4As of 9:14 AM GMT, 03 Jul 2009As of 9:14 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 16 Weeks AmericasDigiKey  Available
View all Distributors  

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
TLC5944PWP RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TLC5944PWPG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TLC5944PWPR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TLC5944PWPRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TLC5944RHBR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TLC5944RHBRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TLC5944RHBT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TLC5944RHBTG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for TLC5944 Help

Datasheet

User Guides

Tools & Software

NamePart # Company Tool / Software Type
TLC5944 LED Driver Evaluation ModuleTLC5944EVM-358Texas InstrumentsDevelopment Boards/EVMs
TLC594x Family Evaluation SoftwareTLC594XEVM-SW Texas Instruments Application Software 

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
TLC59116 16-Bit Fast-Mode Pluse (FM+) I2C Bus Constant-Current LED Sink Driver   TI customers also evaluated this product.
TLC5947 24-Channel, 12-Bit PWM LED Driver with Internal Oscillator   TI customers also evaluated this product.
TLC5940 16-Channel LED Driver w/EEprom DOT Correction & Grayscale PWM Control   TI customers also evaluated this product.
TLC5928 16 Channels Constant Current LED Driver with LED Open Detection   TI customers also evaluated this product.
TL4242 Adjustable LED Driver   TI customers also evaluated this product.
TLC5927 16-Bit Constant-Current LED Sink Driver   TI customers also evaluated this product.
TLC5945 16-Channel LED Driver w/DOT Correction & Grayscale PWM Control & No Delay   TI customers also evaluated this product.
TLC5916 8-Bit Constant-Current LED Sink Driver   TI customers also evaluated this product.
TLC5946 16-Channel, 12-bit PWM LED Driver with 6-Bit Dot Correction   TI customers also evaluated this product.
TLC5926 16-Bit Constant-Current LED Sink Driver   TI customers also evaluated this product.

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