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.