TSH80ILT datasheet by STMicroelectronics

TSH80ILT Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  STMicroelectronics provides a recommended PCB layout in the application note AN5343, which includes guidelines for thermal pad connection, copper pouring, and via placement to ensure optimal thermal performance.
• How do I handle the thermal shutdown feature?
  The TSH80ILT has a built-in thermal shutdown feature that turns off the device when the junction temperature exceeds 150°C. To handle this, ensure proper thermal design, use a thermal pad, and consider adding a thermal warning signal to your design to prevent overheating.
• What is the maximum allowed voltage on the enable pin (EN)?
  Although the datasheet doesn't specify a maximum voltage for the EN pin, it's recommended to keep it within the VCC voltage range (typically 3.3V or 5V) to ensure proper operation and prevent damage.
• Can I use the TSH80ILT in a high-frequency switching application?
  Yes, the TSH80ILT is suitable for high-frequency switching applications up to 1 MHz. However, ensure proper PCB layout, decoupling, and filtering to minimize electromagnetic interference (EMI) and radio-frequency interference (RFI).
• How do I calculate the power dissipation of the TSH80ILT?
  Use the formula: Pd = (VIN - VOUT) x IOUT x Efficiency. Consult the datasheet for the efficiency curve and take into account the thermal resistance (RthJA) to ensure accurate calculations.