TLC5952
www.ti.com. SBVS129 – MAY 2009 24-Channel, Constant-Current LED Driver with
Global Brightness Control and LED Open-Short Detection 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 = 3.0 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 Width: 15 ns Open Load, Short Load, and Over-Temperature
Detection Thermal Shutdown (TSD) with Auto Restart Delay Switching to Prevent Inrush Current
23 Operating Temperature: –40°C to +85°C
Packages: HTSSOP-32, QFN-32 APPLICATIONS Full-Color LED Displays
LED Signboards DESCRIPTION
The TLC5952 is a 24-channel, constant-current sink
driver. Each channel can be turned on/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 has three error detection circuits: LED …
