TLC5951
TLC5951 is 24-Channel 12-Bit PWM LED Driver manufactured by Texas Instruments.
Features
- 1 24-Channel Constant-Current Sink Output
- Current Capability: 40 m A
- 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 and DC Data
- munication Path Between Each Data Port
- LED Power-Supply Voltage up to 15 V
- VCC = 3 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 Ambient Temperature:
- 40°C to 85°C
- Packages: HTSSOP-38, QFN-40
2 Applications
- Full-Color LED Displays
- LED Signboards
3 Description
The TLC5951 device is a 24-channel, constantcurrent sink driver. Each channel has an individuallyadjustable, 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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
HTSSOP (38)
12.50 mm × 6.20 mm
VQFN (40)
6.00 × 6.00 mm
WQFN...
