24通道，12位PWM LED驱动器， 7位点校正和3组， 8位全局亮度控制 24-Channel, 12-Bit PWM LED Driver with 7-Bit Dot Correction and 3-Group, 8-Bit Global Brightness Control
DESCRIPON
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