TLC5955

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TLC5955 SBVS237 – MARCH 2014 TLC5955 48-Channel, 16-Bit, PWM LED Driver with DC, BC, LED Open-Short Detection, and Internal Current Setting 1 Features 1 48 Constant-Current Sink Output Channels Sink Current Capability with Maximum MC, DC, and BC Data: – 23.9 mA (VCC ≤ 3.6 V, MC = 5) – 31.9 mA (VCC > 3.6 V, MC = 7) Grayscale (GS) Control: – 16-Bit (65,536 Steps) with Enhanced Spectrum or Conventional PWM Maximum Current (MC) Control: – 3 Bits (8 Steps) with a 3-mA to 30-mA Range – 3 MC Sets for Each Color Group Dot Correction (DC) Control: – 7 Bits (128 Steps) with a 26.2% to 100% Range Global Brightness Control (BC): – 7 Bits (128 Steps) with a 10% to 100% Range – 3 BC Sets for Each Color Group LED Power-Supply Voltage: Up to 10 V VCC: 3.0 V to 5.5 V Constant-Current Accuracy: – Channel-to-Channel: ±2% (typ), ±5% (max) – Device-to-Device: ±2% (typ), ±4% (max) Data Transfer Rate: 25 MHz Grayscale Control Clock: 33 MHz Auto Display Repeat Display Timing Reset Auto Data Refresh (GS and DC Only) LED Open Detection (LOD) LED Short Detection (LSD) UVLO Sets Default Data Delay Switching to Prevent Inrush Current Operating Temperature: –40°C to +85°C 2 Applications LED Video Displays Variable Message Signs (VMS) Illumination 3 Description The TLC5955 is a 48-channel, constant-current sink driver. Each channel has an individually-adjustable, pulse widt...