TLC59461PWPR datasheet by Texas Instruments

TLC59461PWPR Frequently Asked Questions (FAQs)

• What is the maximum frequency of the clock input?
  The maximum frequency of the clock input is 25 MHz, but it's recommended to use a clock frequency between 10 kHz to 10 MHz for optimal performance.
• How do I properly sequence the GSCLK, SCLK, and XLAT signals?
  The recommended sequence is: GSCLK low, SCLK low, XLAT high, then GSCLK high, SCLK high, and finally XLAT low. This ensures proper data loading and latch operation.
• What is the purpose of the VPRG pin, and how do I use it?
  The VPRG pin is used to set the internal voltage regulator output voltage. Connect a resistor divider from VCC to GND, with the midpoint connected to VPRG, to set the output voltage between 1.2V to 5.5V.
• How do I handle the thermal shutdown feature?
  The TLC59461PWPR has a built-in thermal shutdown feature that activates when the junction temperature exceeds 150°C. To handle this, ensure good thermal design, use a heat sink if necessary, and monitor the THERMAL_METAL flag to detect thermal shutdown events.
• What is the recommended layout and routing for the TLC59461PWPR?
  Use a 4-layer PCB with a solid ground plane, keep analog and digital signals separate, and use short, direct traces for the GSCLK, SCLK, and XLAT signals. Avoid vias and tight bends in the signal traces.