TLC5943 16-bit ES-PWM with 7-bit Device Level Brightness Control | TI.com

TLC5943 (ACTIVE)

16-bit ES-PWM with 7-bit Device Level Brightness Control

16-bit ES-PWM with 7-bit Device Level Brightness Control - TLC5943
 

Description

The TLC5943 is a 16-channel, constant current sink driver. Each channel is individually adjustable with 65,536 enhanced spectrum pulse-width modulated (PWM) steps controlled by grayscale (GS) data. All output drivers are adjustable with 128 constant sink current steps at same value controlled by brightness control (BC) data. Both GS data and BC data are writable via a serial interface port. The maximum current value of all 16 channels can be set by a single external resistor.

The TLC5943 has two error detection circuits for LED open detection (LOD) and a thermal error flag (TEF). LOD detects a broken or disconnected LED and shorted LED to GND during the display period. TEF indicates an over-temperature condition; when a TEF is set, all output drivers are turned off. When the TEF is cleared, all output drivers are restarted.

Features

  • 16 Channels, Constant Current Sink Output
  • 50-mA Capability (Constant Current Sink)
  • 16-Bit (65,536 Steps) Grayscale Control with Enhanced Spectrum (ES) PWM
  • 7-Bit (128 Steps) Global Brightness Control for All Channels with Sink Current
  • LED Power-Supply Voltage up to 17 V
  • VCC = 3.0 V to 5.5 V
  • Constant Current Accuracy:
    • Channel-to-Channel = ±1.5%
    • Device-to-Device = ±3%
  • CMOS Level I/O
  • 30-MHz Data Transfer Rate
  • 33-MHz Grayscale Control Clock
  • Auto Display Repeat
  • Auto Data Refresh
  • Continuous Base LED Open Detection (LOD):
    • Detect LED opening and LED short to GND during display
  • Thermal Shutdown (TSD):
    • Automatic shutdown at high temperature conditions
    • Restart under normal temperature
  • Readable Error Information:
    • LED Open Detection (LOD)
    • Thermal Error Flag (TEF)
  • Noise Reduction:
    • 4-channel grouped delay to prevent inrush current
  • Operating Temperature: –40°C to +85°C
  • APPLICATIONS
    • Monochrome, Multicolor, Full-Color LED Displays
    • LED Signboards
    • Display Backlighting

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Parametrics Compare all products in Signage & Large Display LED Driver

 
Features
Analog Dimming Steps
Data Transfer Rate (Typ) (MHz)
Ch to Ch Accuracy (Typ) (+/- %)
Rating
Operating Temperature Range (C)
Pin/Package
TLC5943 TLC5940 TLC59401 TLC5941 TLC5944 TLC5945 TLC5946 TLC59461 TLC59482 TLC5948A TLC5949
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good
Thermal Shutdown    
Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good    
Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good    
Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good    
Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good
Thermal Shutdown    
Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good    
Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good    
Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good    
PWM LED Driver     Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good
Thermal Shutdown    
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good
Thermal Shutdown    
128     64     64     64     64     64     64     64     64     128     128    
30     30     30     30     30     30     30     30     33     33     33    
1.5     1     1     1     1     1     1     1     1     1.5     0.6    
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    

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