LTR18EZPJ301 - ROHM Semiconductor

LTR18EZPJ301 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  A thermal pad on the bottom of the package should be connected to a large copper area on the PCB to dissipate heat efficiently. A minimum of 2oz copper thickness is recommended.
• How do I ensure the stability of the output voltage?
  To ensure stability, a minimum output capacitance of 10uF with an ESR of 1Ω or less is recommended. Additionally, a 1uF ceramic capacitor can be added in parallel to improve high-frequency noise rejection.
• What is the maximum input voltage that can be applied to the LTR18EZPJ301?
  Although the datasheet specifies a maximum input voltage of 18V, it's recommended to limit the input voltage to 15V to ensure reliable operation and prevent damage to the device.
• Can I use the LTR18EZPJ301 in a high-temperature environment?
  While the device is rated for operation up to 125°C, it's essential to consider the derating curves and thermal management to ensure reliable operation in high-temperature environments.
• How do I minimize electromagnetic interference (EMI) in my design?
  To minimize EMI, use a shielded inductor, keep the switching node (SW) as short as possible, and use a common-mode choke or ferrite bead on the input lines. Additionally, ensure good PCB layout practices, such as separating analog and digital grounds.