TLC5940 - 16 Channel LED Driver

16 CHANNEL LED DRIVER WITH DOT CORRECTION AND GRAYSCALE PWM CONTROL

The TLC5940 is a 16-channel constant-current sink LED driver. Each channel has an individually adjust- able 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 via a serial interface. A single external resistor sets the maximum current value of all 16 channels.

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)

–0mAto60mA(VCC <3.6V)
–0mAto120mA(VCC >3.6V)

•    LED Power Supply Voltage up to 17 V

•    VCC =3Vto5.5V

•    Serial Data Interface, SPI comp.

•    Controlled In-Rush Current

•    30-MHz Data Transfer Rate

•    CMOS Level I/O

•   Dip-28 Package

•   0.3 in. (7.62 mm) Row Spacing

•    Error Information

– LOD: LED Open Detection

– TEF: Thermal Error Flag

Datasheet available from the DOWNLOAD tab