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.