TLC5958 48 Channel, 16 bit ES-PWM, LED driver with pre-charge FET, LED open detection and 48k bit memory | TI.com

TLC5958
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48 Channel, 16 bit ES-PWM, LED driver with pre-charge FET, LED open detection and 48k bit memory

 

Description

The TLC5958 is a 48 channels constant-current sink driver for multiplexing system with 1 to 32 duty ratio. Each channel has an individually-adjustable, 65536-step, pulse width modulation (PWM) grayscale (GS).

48K bit display memory is implemented to increase the visual refresh rate and to decrease the GS data writing frequency.

The output channels are grouped into three groups, each group has 16 channels. Each group has a 512-step color brightness control (CC) function. The maximum current value of all 48 channels can be set by 8-step global brightness control (BC) function. CC and BC can be used to adjust the brightness deviation between LED drivers. GS, CC, and BC data are accessible via a serial interface port.

Send request via email for Application Note: Build High Density, High Refresh Rate, Multiplexing LED Panel with TLC5958.

The TLC5958 has one error flag: LED open detection (LOD), which can be read via a serial interface port. The TLC5958 also has a power-save mode that sets the total current consumption to 0.8mA (typ) when all outputs are off.

Send request via email for Application Note: .

Features

  • 48 Channels Constant Current Sink Output
  • Sink Current Capability with Max BC/CC data:
    • 25mA at 5VCC
    • 20mA at 3.3VCC
  • Global Brightness Control (BC) : 3-Bit (8 Step)
  • Color Brightness Control (CC) for Each Color Group:
    9-Bit (512 Step), Three Groups
  • Grayscale(GS) Control with Multiplexed
    Enhanced Spectrum(ES) PWM: 16bit
  • 48K bit Grayscale Data Memory Support
    32-multiplexing
  • LED Power Supply Voltage Up To 10V
  • Vcc = 3.0V to 5.5V
  • Constant Current Accuracy
    • Channel to Channel = ±1%(Typ), ±3%(Max)
    • Device to Device = ±1%(Typ), ±2%(Max)
  • Data Transfer Rate: 25MHz
  • Gray Scale Clock: 33MHz
  • LED Open Detection (LOD)
  • Thermal Shut Down (TSD)
  • IREF Resistor Short Protection (ISP)
  • Power-Save Mode (PSM) with high speed recovery
  • Delay Switching to Prevent Inrush Current
  • Pre-charge FET to Avoid Ghosting Phenomenon
  • 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)
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    
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    
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    
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    
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