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 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.

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
  • 30 MHz Data Transfer Rate
  • CMOS Level I/O
  • Error Information
    • LOD: LED Open Detection
    • TEF: Thermal Error Flag

View more

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
32VQFN   
28HTSSOP
32VQFN   
28HTSSOP
32VQFN   
28HTSSOP
32VQFN   
28HTSSOP
32VQFN   
28HTSSOP
32VQFN   
28HTSSOP
28TSSOP
32VQFN   
28HTSSOP    24SSOP    24HTSSOP
24SSOP   
24HTSSOP
24SSOP   
1.20 | 1ku    1.10 | 1ku    1.00 | 1ku    1.20 | 1ku    1.05 | 1ku    1.00 | 1ku    0.90 | 1ku    0.90 | 1ku    0.80 | 1ku    1.10 | 1ku    1.05 | 1ku   

Other qualified versions of TLC5940

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

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