TLC5951DAPR Datasheet PDF - TI

●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