16-Channel LED Driver w/EEprom DOT Correction & Grayscale PWM Control - TLC5940

TLC5940 (ACTIVE)

16-Channel LED Driver w/EEprom DOT Correction & Grayscale PWM Control

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 via 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.

Features

  • 16 Channels
  • 12 bit (4096 Steps) Grayscale PWM Control
  • Dot Correction
    • 6 bit (64 Steps)
    • Storable in Integrated EEPROM
  • Drive Capability (Constant-Current Sink)
    • 0 mA to 60 mA (VCC < 3.6 V)
    • 0 mA to 120 mA (VCC > 3.6 V)
  • LED Power Supply Voltage up to 17 V
  • VCC = 3 V to 5.5 V
  • Serial Data Interface
  • Controlled In-Rush Current
  • 30MHz Data Transfer Rate
  • CMOS Level I/O
  • Error Information
    • LOD: LED Open Detection
    • TEF: Thermal Error Flag
  • APPLICATIONS
    • Monocolor, Multicolor, Full-Color LED Displays
    • LED Signboards
    • Display Backlighting
    • General, High-Current LED Drive

PowerPAD is a trademark of Texas Instruments.

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Parametrics Compare all products in Signage/Linear

 
Data Vin (Min) (V)
Data Vin (Max) (V)
Output Channels
Analog Dimming Steps
Data Input
Data Transfer Rate (Typ) (MHz)
Ch to Ch Accuracy (Typ) (+/- %)
Per Channel PWM Steps
Per Channel Drive (mA)
LED Voltage (Max) (V)
Special Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TLC5940 TLC59401 TLC5941 TLC5943 TLC5944 TLC5945 TLC5946 TLC59461 TLC59482 TLC5948A TLC5949
3     3     3     3     3     3     3     3     3     3     3    
5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     3.6    
16     16     16     16     16     16     16     16     16     16     16    
64     64     64     128     64     64     64     64     64     128     128    
Serial     Serial     Serial     Serial     Serial     Serial     Serial     Serial     Serial     Serial     Serial    
30     30     30     30     30     30     30     30     33     33     33    
1     1     1     1.5     1     1     1     1     1     1.5     0.6    
4096     4096     4096     65536     4096     4096     4096     4096     65536     65536     4096    
120     120     80     50     60     80     40     40     45     60     45    
17     17     17     17     15     17     17     17     10     10     10    
Fault Reporting
LED Open Detection
Power Good/Error Flag    
Fault Reporting
LED Open Detection
Power Good/Error Flag    
Fault Reporting
LED Open Detection
Power Good/Error Flag    
Fault Reporting
LED Open Detection
Power Good/Error Flag
Thermal Shutdown    
Fault Reporting
LED Open Detection
Power Good/Error Flag
Thermal Shutdown    
Fault Reporting
LED Open Detection
Power Good/Error Flag    
Fault Reporting
LED Open Detection
Power Good/Error Flag    
Fault Reporting
LED Open Detection
Power Good/Error Flag    
  Fault Reporting
LED Open Detection
Power Good/Error Flag
Thermal Shutdown    
Fault Reporting
LED Open Detection
Power Good/Error Flag
Thermal Shutdown    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
28HTSSOP
28PDIP
32VQFN    
28HTSSOP
32VQFN    
28HTSSOP
28PDIP
32VQFN    
28HTSSOP
32VQFN    
28HTSSOP
32VQFN    
28HTSSOP
32VQFN    
28HTSSOP
28TSSOP
32VQFN    
28HTSSOP     24SSOP     24HTSSOP
24SSOP    
24HTSSOP
24SSOP    
1.26 | 1ku     1.26 | 1ku     1.00 | 1ku     1.20 | 1ku     1.05 | 1ku     1.00 | 1ku     0.95 | 1ku     0.95 | 1ku     1.15 | 1ku     1.30 | 1ku     1.25 | 1ku    

Other qualified versions of TLC5940

Version Part Number Definition
Enhanced Product TLC5940-EP Supports Defense, Aerospace and Medical Applications

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