text.skipToContent text.skipToNavigation


24-Ch 12-Bit PWM LED Driver w/7-Bit Dot Correction 8-Bit Global Brightness


Package | PIN: RHA | 40
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $3.89
10-24 $3.50
25-99 $3.26
100-249 $2.86
250-499 $2.68
500-749 $2.27
750-999 $1.92
1000+ $1.83


  • 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 and DC Data
  • Communication 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

All trademarks are the property of their respective owners.

Texas Instruments  TLC5951RHAT

The TLC5951 device is a 24-channel, constant-current sink driver. Each channel has anindividually-adjustable, 4096-step, pulse-width modulation (PWM) grayscale (GS) brightness controland 128-step constant-current dot correction (DC). The dot correction adjusts brightness deviationbetween channels and other LED drivers. The output channels are grouped into three groups of eightchannels. Each channel group has a 256-step global brightness control (BC) function and anindividual grayscale clock input.

GS, DC, and BC data are accessible via a serial interface port. DC and BC can beprogrammed via a dedicated serial interface port.

The TLC5951 device has three error-detection circuits for LED-open detection (LOD),LED-short detection (LSD), and thermal error flag (TEF). LOD detects a broken or disconnected LED,LSD detects a shorted LED, and TEF indicates an overtemperature condition.