1FEATURES

23. 16 Channels

. 12-Bit (4096 Steps) Grayscale PWM Control

. Dot Correction

. 6-Bit (64 Steps)

. Drive Capability (Constant-Current Sink)

. 0 mA to 80 mA (V CC ≤ 3.6 V)

. 0 mA to 120 mA (VCC > 3.6 V)

. LED Power-Supply Voltage up to 17 V

. V CC = 3.0 V to 5.5 V

. Serial Data Interface

. Controlled Inrush Current

. 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

DESCRIPTION

The TLC59401 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 TLC59401 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 over-temperature

condition.