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



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.


  • 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
    • Full-Color LED Displays
    • LED Signboards

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Parametrics Compare all products in Signage & Large Display LED Driver

Analog Dimming Steps
Data Transfer Rate (Typ) (MHz)
Ch to Ch Accuracy (Typ) (+/- %)
Operating Temperature Range (C)
TLC5952 TLC5947 TLC5951
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
Power Good
Thermal Shutdown   
Internal GS Clock
PWM LED Driver
Thermal Shutdown   
Dot Correction
Error Flag
Fault Detection
LED Open Detection
LED Short to Ground Detection
LED Short to VLED Detection
PWM LED Driver
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   

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