TLC5920DL datasheet by Texas Instruments

TLC5920DL Frequently Asked Questions (FAQs)

• What is the maximum current that can be sourced or sunk by each output?
  The TLC5920DL can source up to 25mA and sink up to 50mA per output.
• How do I ensure that the TLC5920DL is properly powered up and initialized?
  The TLC5920DL requires a power-on reset (POR) circuit to ensure proper initialization. A 0.1uF capacitor between VCC and GND is recommended to filter out noise and ensure a clean power-up sequence.
• What is the maximum clock frequency that can be used with the TLC5920DL?
  The TLC5920DL can operate with clock frequencies up to 25MHz, but the maximum frequency may be limited by the specific application and PCB layout.
• How do I handle the thermal management of the TLC5920DL?
  The TLC5920DL has a thermal pad on the bottom of the package that should be connected to a thermal plane on the PCB to dissipate heat. A thermal interface material (TIM) can be used to improve heat transfer.
• What is the recommended layout and routing for the TLC5920DL?
  The TLC5920DL requires careful PCB layout and routing to minimize noise and ensure signal integrity. A 4-layer PCB with a solid ground plane and separate power planes is recommended. Signals should be routed away from noise sources and clock lines should be shielded.