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.
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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:-
Specification:-
| Parameter | Value |
| Part number | TLC5940 |
| Features | Dot Correction, Error Flag, Fault Detection, LED, Open Detection, LED Short to Ground Detection, LED Short to VLED Detection, PWM LED Driver, Power Good |
| Analog dimming steps | 64 |
| Data transfer rate (Typ) (MHz) | 30 |
| Ch to ch accuracy (Typ) (+/- %) | 1 |
| Package Group | HTSSOP|28 VQFN|32 |
| Package size: mm2:W x L (PKG) | 28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP|28) 32VQFN: 25 mm2: 5 x 5 (VQFN|32) |
| Rating | See Datasheet |
| Operating temperature range ?C | -40 to 85 |
Related Document:-
Operating voltage | 2.5 3.0V |
Pixel Resolution | 0.3MP |
Photosensitive array | 640 x 480 |
Optical Size | 1.6 inch |
Angel of view | 67 degrees |
Maximum Frame Rate | 30fps VGA |
Sensitivity | 1.3V/(Lux-sec) |
Dormancy | Less than 20A |
Power consumption | 60mW/15fpsVGA YUV |
Temperature operation Range | -30 C ~ 70 C |
Pixel area | 3.6 x 3.6 m |
Signal to noise ratio (SNR) | 46 dB |
Dynamic range | 52 dB |
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