TLC5955 48ch, 16bit PWM LED Driver with Dot-Correction, Brightness Control, Open/Short Detection | TI.com

TLC5955 (ACTIVE)

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

 

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.

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

Parametrics

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Part number Order Features Analog dimming steps Data transfer rate (Typ) (MHz) Ch to ch accuracy (Typ) (+/- %) Package Group Package size: mm2:W x L (PKG) Rating Operating temperature range (C)
TLC5955 Order now 48CH LED Driver
Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver    
128     25     2     HTSSOP | 56
QFN | 56    
56HTSSOP: 113 mm2: 8.1 x 14 (HTSSOP | 56)
56QFN: 64 mm2: 8 x 8 (QFN | 56)    
Catalog     -40 to 85    
TLC5954 Order now 48CH LED Driver
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
ON/OFF LED Driver    
128     30     1     QFN | 56     56QFN: 64 mm2: 8 x 8 (QFN | 56)     Catalog     -40 to 85    
TLC5957 Order now 48CH LED Driver
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Thermal Shutdown    
512     33     1     QFN | 56     56QFN: 64 mm2: 8 x 8 (QFN | 56)     Catalog     -40 to 85    
TLC5958 Order now 48CH LED Driver
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Thermal Shutdown    
512     25     1     QFN | 56     56QFN: 64 mm2: 8 x 8 (QFN | 56)     Catalog     -40 to 85    
TLC59581 Order now 48CH LED Driver
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Pre-Charge FET    
512     25     1     QFN | 56     56QFN: 64 mm2: 8 x 8 (QFN | 56)     Catalog     -40 to 85    
TLC59582 Order now 48CH LED Driver
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
Thermal Shutdown    
512     25     1     QFN | 56     56QFN: 64 mm2: 8 x 8 (QFN | 56)     Catalog     -40 to 85