SM91536AL-E - Bourns

SM91536AL-E Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance?
  Bourns recommends a symmetrical PCB layout with a solid ground plane, and keeping the input and output traces as short as possible. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
• How do I ensure the device operates within the specified temperature range?
  The SM91536AL-E is rated for operation from -40°C to 125°C. Ensure proper thermal management by providing adequate heat sinking, and avoiding high-power dissipation in close proximity to the device. Also, follow the recommended PCB layout and thermal design guidelines.
• What is the recommended input capacitor value and type?
  Bourns recommends using a high-quality, low-ESR ceramic capacitor with a value of 10uF to 22uF, and a voltage rating of at least 25V. The capacitor should be placed as close as possible to the VIN pin.
• How do I handle the device's enable pin (EN) during power-up and power-down sequences?
  The EN pin should be pulled high during normal operation and pulled low during shutdown. Ensure a clean power-up and power-down sequence by using a slow-rising power supply and a pull-up resistor on the EN pin.
• What is the maximum allowed output current for the SM91536AL-E?
  The maximum allowed output current is 3A. However, it's recommended to derate the output current based on the ambient temperature and the device's power dissipation to ensure reliable operation.