TLC5929 16-Channel LED Driver

Texas Instruments' constant current LED driver with 7-bit global brightness control, power-save mode, and self-diagnostics

Texas Instruments TLC5929 16-channel LED Driver Texas Instruments' TLC5929 is a 16-channel constant current sink LED driver. Each channel can be turned on or off by writing data to an internal register. The constant current value of all 16 channels is set by a single external resistor with 128 steps for the global brightness control. The TLC5929 has six error flags: LED open detection (LOD), LED short detection (LSD), output leakage detection (OLD), reference current terminal short detection (ISF), pre-thermal warning (PTW) and thermal error flag (TEF). In addition, the LOD and LSD functions have invisible detection mode (IDM) that can detect those errors even when the output is off. The error detection results can be read via a serial interface port. The TLC5929 also has a power-save mode that sets the total current consumption to 10 µA (typical) when all outputs are off.   TLC5929 Datasheet

  • 16 constant-current sink output channels with on/off control
  • Current capability:
    • 40 mA (VCC ≤ 3.6 V)
    • 50 mA (VCC > 3.6 V)
  • Global brightness control: 7-Bit (128 Steps)
  • Power-supply voltage range: 3.0 V to 5.5 V
  • LED power-supply voltage: up to 10 V
  • Data transfer rate: 33 MHz
  • BLANK pulse width: 40 ns (minimum)
  • LED open detection/LED short detection with invisible detection mode
  • Output leakage detection detects 3 µA leak
  • Pre-thermal warning
  • Thermal shutdown
  • Current reference terminal short flag
  • Power-save mode with 10 µA consumption
  • Undervoltage lockout sets the default data
  • 2 ns delayed switching between each channel minimizes inrush current

Texas Instruments
Part Number
Part Number
Package Voltage - Supply Voltage - Output  
TLC5929DBQ 296-28533-5-ND 24- SSOP/QSOP 3 V ~ 5.5 V 10 V TLC5929 Datasheet

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