Texas Instruments TLC5940
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.| Part No. | TLC5940 |
|---|---|
| Datasheet | TLC5940 Download |
| Manufacturer |  Texas Instruments |
| Description | 16-Channel LED Driver |
| Buy | Stock & Price |
FEATURES
●1 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 2
APPLICATIONS
● Monocolor, Multicolor, Full-Color LED Displays● LED Signboards
● Display Backlighting
● General, High-Current LED Drive 3
DESCRIPTION
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.
