TLC5955RTQR

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TLC5955RTQR

48ch, 16bit PWM LED Driver with Dot-Correction, Brightness Control, Open/Short Detection

Packaging

Package | PIN: RTQ | 56
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $4.72
10-24 $4.25
25-99 $3.97
100-249 $3.56
250-499 $3.32
500-749 $2.89
750-999 $2.50
1000+ $2.45

Features

  • 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

Texas Instruments  TLC5955RTQR

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.