24-Channel Constant-Current LED Driver with Global Brightness and LED Open Short Detection - TLC5952

TLC5952 (ACTIVE)

24-Channel Constant-Current LED Driver with Global Brightness and LED Open Short Detection

 

Description

The TLC5952 is a 24-channel, constant-current sink driver. Each channel can be turned on/off with internal register data. The output channels are grouped into three groups of eight channels each. Each channel group has a 128-step global brightness control (BC) function. Both on/off data and BC are writable via a serial interface. The maximum current value of all 24 channels is set by a single external resistor.

The TLC5952 has three error detection circuits: LED open detection (LOD), LED short detection (LSD), and a thermal error flag (TEF). The error detection is read via a serial interface.

Features

  • 24-Channel Constant-Current Sink Output with On/Off Control
  • Current Capability:
    • 35 mA for 16 Channels
    • 26.2 mA for 8 Channels
  • Global Brightness Control (BC) for Each Color Group: 7-Bit (128 Step), Three Groups
  • LED Power-Supply Voltage up to 15 V
  • VCC = 3.0 V to 5.5 V
  • Constant-Current Accuracy:
    • Channel-to-Channel = ±1%
    • Device-to-Device = ±3%
  • CMOS Logic Level I/O
  • Data Transfer Rate: 35 MHz
  • BLANK Pulse Width: 15 ns
  • Open Load, Short Load, and Over-Temperature Detection
  • Thermal Shutdown (TSD) with Auto Restart
  • Delay Switching to Prevent Inrush Current
  • Operating Temperature: -40°C to +85°C
  • Packages: HTSSOP-32, QFN-32
  • APPLICATIONS
    • Full-Color LED Displays
    • LED Signboards

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Special Features
Analog Dimming Steps
Data Transfer Rate (Typ) (MHz)
Ch to Ch Accuracy (Typ) (+/- %)
Rating
Operating Temperature Range (C)
Pin/Package
TLC5952 TLC5947 TLC5951
Error Flag
Fault Detection
LED Open Detection
Power Good
Thermal Shutdown   
Internal GS Clock
Thermal Shutdown   
Error Flag
Fault Detection
LED Open Detection
Power Good
Thermal Shutdown   
128      256   
35    30    30   
1    2    1.5   
Catalog    Catalog    Catalog   
-40 to 85    -40 to 85    -40 to 85   
32HTSSOP    32HTSSOP
32VQFN   
38HTSSOP
40VQFN   

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