LK112M15TR datasheet by STMicroelectronics

LK112M15TR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance?
  STMicroelectronics provides a recommended PCB layout in the application note AN2669, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize electromagnetic interference (EMI).
• How do I select the correct input capacitor for the LK112M15TR?
  The input capacitor selection depends on the input voltage, output voltage, and output current. A general guideline is to choose a capacitor with a voltage rating at least 1.5 times the input voltage, and a capacitance value between 1uF to 10uF. The datasheet provides more detailed guidance on input capacitor selection.
• What is the maximum ambient temperature for reliable operation?
  The LK112M15TR is rated for operation up to 150°C ambient temperature, but it's recommended to derate the output current and voltage to ensure reliable operation above 125°C. Consult the datasheet for thermal derating curves and guidelines.
• How do I ensure electromagnetic compatibility (EMC) compliance with the LK112M15TR?
  To ensure EMC compliance, follow the recommended PCB layout and component placement guidelines, use a shielded inductor, and add EMI filters or common-mode chokes as needed. Additionally, consult the application note AN2670 for more detailed EMC design guidelines.
• What is the recommended output capacitor type and value for the LK112M15TR?
  The recommended output capacitor type is a low-ESR ceramic capacitor, such as X5R or X7R, with a value between 10uF to 22uF. The output capacitor selection depends on the output voltage, output current, and desired ripple voltage. Consult the datasheet for more detailed guidance.