1 Features

1. 12 Constant-Current Sink Output Channels

. Current Capability: 60 mA Per Channel

. Grayscale (GS) Control With Enhanced Spectrum

PWM:

16-Bit (65536 Steps)

. Global Brightness Control (BC):

7-Bit (128 Steps) for Each Color Group

. Power-Supply Voltage Range:

. Internal Linear Regulator: 6 V to 17 V

. Direct Power Supply: 3 V to 5.5 V

. LED Supply Voltage: Up to 17 V

. Constant-Current Accuracy:

. Channel-to-Channel = ±1% (Typical)

. Device-to-Device = ±1% (Typical)

. Data Transfer Rate: 20 MHz

. Linear Voltage Regulator: 3.3 V

. Auto Display Repeat Function

. Display Timing Reset Function

. Internal and External Selectable GS Clock

. Thermal Shutdown (TSD) With Auto Restart

. Unlimited Device Cascading

. Operating Temperature Range: .40°C to +85°C

2 Applications

RGB LED Cluster Lamp Displays

3 Description

The TLC5971 device is a 12-channel, constant-

current sink driver. Each output channel has individually adjustable currents with 65536 PWM

grayscale (GS) steps. Also, each color group can be

controlled by 128 constant-current sink steps with the

global brightness control (BC) function. GS control

and BC are accessible through a two-wire signal interface. The maximum current value for each

channel is set by a single external resistor. All

constant-current outputs are turned off when the IC is

in an overtemperature condition.