LED DRVR 16Segment 3.3V/5V 32-Pin VQFN EP T/R

The TLC5945 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. Both grayscale control and dot correction are accessible via a serial interface. A single external resistor sets the maximum current value of all 16 channels.The TLC5945 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.

16Channels

12-bit (4096 Steps) Grayscale PWM Control

Dot Correction

• 6 bit (64 Steps)

Drive Capability (Constant-Current Sink)

• 0 mA to 80 mA

LED Power Supply Voltage up to 17 V

V_CC = 3.0 V to 5.5 V

Serial Data Interface

30-MHz Data Transfer Rate

CMOS Level I/O

Error Information

• LOD: LED Open Detection
• TEF: Thermal Error Flag

APPLICATIONS

• Monocolor, Multicolor, Full-Color LED Displays
• LED Signboards
• Display Back-lighting