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
• APPLICATIONS
  • Full-Color LED Displays
  • LED Signboards

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