1 Features

1. 24-Channel Constant-Current Sink Output With

On-Off Control

. Current Capability:

. 35 mA for 16 Channels

. 26.2 mA for 8 Channels

. Global Brightness Control (BC) for Each Color

Group: 7-Bit (128 Step), Three Groups

. LED Power-Supply Voltage up to 15 V

. VCC = 3 V to 5.5 V

. Constant-Current Accuracy:

. Channel-to-Channel = ±1%

. Device-to-Device = ±3%

. CMOS Logic Level I/O

. Data Transfer Rate: 35 MHz

. BLANK Pulse Duration: 15 ns

. Open-Load, Shorted-Load, and Overtemperature

Detection

. Thermal Shutdown (TSD) With Auto Restart

. Delay Switching to Prevent Inrush Current

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

. Packages: HTSSOP-32, QFN-32

2 Applications

. Full-Color LED Displays

. LED Signboards

3 Description

The TLC5952 device is a 24-channel, constantcurrent

sink driver. Each channel can be turned on or

off with internal register data. The output channels

are grouped into three groups of eight channels each.

Each channel group has a 128-step global brightness

control (BC) function. Both on-off data and BC are

writable via a serial interface. The maximum current

value of all 24 channels is set by a single external

resistor.

The TLC5952 device has three error detection

circuits: LED-open detection (LOD), LED-shorted

detection (LSD), and a thermal error flag (TEF). The

error detection is read via a serial interface.