TLC5940 16-Channel LED Driver w/EEprom DOT Correction & Grayscale PWM Control | TI.com

TLC5940 (ACTIVE)

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

 

Special Note:

Visit TI's LED Signage Solutions web page for additional information.

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

Parametrics

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Part number Order Features Analog dimming steps Data transfer rate (Typ) (MHz) Ch to ch accuracy (Typ) (+/- %) Package Group Package size: mm2:W x L (PKG) Rating Operating temperature range (C)
TLC5940 Order now Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good    		 64     30     1     HTSSOP | 28
VQFN | 32    		 28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)    		 Catalog     -40 to 85    
TLC59401 Order now Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good    		 64     30     1     HTSSOP | 28
VQFN | 32    		 28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)    		 Catalog     -40 to 85    
TLC5941 Order now Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good    		 64     30     1     HTSSOP | 28
VQFN | 32    		 28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)    		 Catalog     -40 to 85    
TLC5943 Order now 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     30     1.5     HTSSOP | 28
VQFN | 32    		 28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)    		 Catalog     -40 to 85    
TLC5944 Order now 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    		 64     30     1     HTSSOP | 28
VQFN | 32    		 28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)    		 Catalog     -40 to 85    
TLC5945 Order now Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good    		 64     30     1     HTSSOP | 28
VQFN | 32    		 28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)    		 Catalog     -40 to 85    
TLC5946 Order now Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good    		 64     30     1     HTSSOP | 28
TSSOP | 28
VQFN | 32    		 28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)
28TSSOP: 62 mm2: 6.4 x 9.7 (TSSOP | 28)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)    		 Catalog     -40 to 85    
TLC59461 Samples not available Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Power Good    		 64     30     1     HTSSOP | 28     28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)     Catalog     -40 to 85    
TLC59482 Order now PWM LED Driver     64     33     1     SSOP | 24     24SSOP: 52 mm2: 6 x 8.65 (SSOP | 24)     Catalog     -40 to 85    
TLC5948A Order now 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    		 128     33     1.5     HTSSOP | 24
SSOP | 24    		 24HTSSOP: 34 mm2: 4.4 x 7.8 (HTSSOP | 24)
24SSOP: 52 mm2: 6 x 8.65 (SSOP | 24)    		 Catalog     -40 to 85    
TLC5949 Order now 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     33     0.6     HTSSOP | 24
SSOP | 24    		 24HTSSOP: 34 mm2: 4.4 x 7.8 (HTSSOP | 24)
24SSOP: 52 mm2: 6 x 8.65 (SSOP | 24)    		 Catalog