48 通道、16 位 ES-PWM LED 驱动器,具有预充电 FET、LOD Caterpillar 和 - TLC59582

TLC59582 (正在供货)

48 通道、16 位 ES-PWM LED 驱动器,具有预充电 FET、LOD Caterpillar 和

 

描述

The TLC59581/82are 48-channel constant-current sink drivers. Each channel has an individually-adjustable, 65536-step, pulse width modulation (PWM) grayscale (GS) brightness control.

The TLC59581 can support 32-multiplexing while TLC59582 can support 16-multiplexing.

The output channels are divided into three groups. Each group has a 512-step color brightness control (CC). CC adjusts brightness control between colors. The maximum current value of all 48 channels can be set by 8-step global brightness control (BC). BC adjusts brightness deviation between LED drivers. GS, CC and BC data are accessible through a serial interface port.

See application note Build High Density, High Refresh Rate, Multiplexing LED Panel with TLC59581, SLVA744.

The TLC59581/82 device has one error flag: the LED open detection (LOD), which can be read through a serial interface port. To resolve this caterpillar issue caused by an open LED, the TLC59581/82 device has an enhanced circuit for caterpillar canceling, thermal shut down (TSD) and IREF resistor short protection (ISP), which ensures a higher system reliability. The TLC59581/82 device also has a power-save mode that sets the total current consumption to 0.8 mA (typical) when all outputs are off. The TLC59581/82 device is a good solution to improve display performance of a multiplexing panel for low-grayscale patterns.

特性

  • 48 Constant-Current Sink Output Channels
  • Sink Current Capability with Max BC/CC data:
    • 25 mA at 5 VCC
    • 20 mA at 3.3 VCC
  • Global Brightness Control (BC): 3-Bit (8-Step)
  • Color Brightness Control (CC) for Each Color
    Group: 9-Bit (512-Step), Three Groups
  • LED Power Supply Voltage Up To 10 V
  • VCC = 3.0 V to 5.5 V
  • Constant Current Accuracy
    • Channel-to-Channel = ±1%(Typ), ±3%(Max)
    • Device-to-Device = ±1%(Typ), ±2%(Max)
  • Data Transfer Rate: 25 MHz
  • Gray Scale Clock: 33 MHz
  • Pre-Charge FET to Avoid Ghosting Phenomenon
  • Enhanced Circuit for Caterpillar Cancelling
  • Low-Grayscale Enhancement
  • LED Open Detection (LOD)
  • Thermal Shut Down (TSD)
  • Operating Temperature: –40°C to 85°C

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参数 与其它产品相比 标牌和大型显示屏 LED 驱动器

 
Features
Analog Dimming Steps
Data Transfer Rate (Typ) (MHz)
Ch to Ch Accuracy (Typ) (+/- %)
Rating
Operating Temperature Range (C)
Pin/Package
TLC59582 TLC5954 TLC5955 TLC5957 TLC5958 TLC59581
Fault Detection
LED Open Detection
Thermal Shutdown   
Fault Detection
LED Open Detection
LED Short to VLED Detection   
Fault Detection
LED Open Detection
LED Short to VLED Detection   
Fault Detection
LED Open Detection
Thermal Shutdown   
Fault Detection
LED Open Detection
Thermal Shutdown   
Pre-Charge FET   
512    128    128    512    512    512   
25    30    25    33    25    25   
1    1    2    1    1    1   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
56QFN    56QFN    56HTSSOP
56QFN   
56QFN    56QFN    56QFN   
View more