●DESCRIPTION
●The TLC5951 is a 24-channel, constant-current sink driver. Each channel has an individually-adjustable,
●4096-step, pulse width modulation (PWM) grayscale (GS) brightness control and 128 step constant-current dot correction (DC). The dot correction adjusts brightness deviation between channels and other
●LED drivers. The output channels are grouped into three groups of eight channels. Each channel group
●has a 256-step global brightness control (BC) function and an individual grayscale clock input.
●FEATURES
●• 24-Channel Constant-Current Sink Output
●• Current Capability: 40 mA
●• Selectable Grayscale (GS) Control with PWM: 12-Bit (4096 Step), 10-Bit (1024 Step), 8-Bit (256 Step)
●• Three Independent Grayscale Clocks for Three Color Groups
●• Dot Correction (DC): 7-Bit (128 Step)
●• Global Brightness Control (BC) for Each Color Group: 8-Bit (256 Step)
●• Auto Display Repeat Function
●• Independent Data Port for GS and BC/DC Data
●• Communication Path Between Each Data Port
●• LED Power-Supply Voltage up to 15 V
●• VCC= 3.0 V to 5.5 V
●• Constant-Current Accuracy:
●– Channel-to-Channel = ±1.5%
●– Device-to-Device = ±3%
●• CMOS Logic Level I/O
●• Data Transfer Rate: 30 MHz
●• 33-MHz Grayscale Control Clock
●• Continuous Base LED Open Detection (LOD)
●• Continuous Base LED Short Detection (LSD)
●• Thermal Shutdown (TSD) with Auto Restart
●• Grouped Delay to Prevent Inrush Current
●• Operating Air Temperature: –40°C to +85°C
●• Packages: HTSSOP-38, QFN-40
●APPLICATIONS
●• Full-Color LED Displays
●• LED Signboards
