TLC5970RHPT

TLC5955RTQR Description
The TLC5955 is a 48-channel, constant-current sink driver. Each channel has an individually-adjustable, pulse width modulation (PWM), grayscale (GS) brightness control with 65,536 steps and 128 steps of constant-current dot correction (DC). DC adjusts brightness deviation between channels. All channels have a 128-step global brightness control (BC). BC adjusts brightness deviation between the R, G, B color group.
The eight-step maximum current control (MC) selects the maximum output current range for all channels of each color group. GS, DC, BC, and MC data are accessible with a serial interface port.
The TLC5955 has two error flags: LED open detection (LOD) and LED short detection (LSD).
The error detection results can be read with a serial interface port. TLC5955RTQR
Features
• 48 Constant-Current Sink Output Channels
• Sink Current Capability with Maximum MC, DC, pulse width modulation (PWM), grayscale (GS)  and BC Data 
– 23.9 mA (VCC ≤ 3.6 V, MC = 5)  
– 31.9 mA (VCC > 3.6 V, MC = 7)
• Grayscale (GS) Control: adjusts brightness deviation between the R, G, B 
– 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 TLC5955RTQR Applications
• LED Video Displays
• Variable Message Signs (VMS)
• Illumination