RSX088LAP2STR - ROHM Semiconductor

RSX088LAP2STR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  ROHM recommends a thermal pad size of at least 2mm x 2mm, with multiple vias connecting to a solid ground plane to dissipate heat efficiently.
• How do I ensure stable operation with high-frequency switching?
  To minimize ringing and ensure stable operation, use a low-ESR output capacitor, keep the PCB layout compact, and consider adding a snubber circuit or ferrite bead to the output.
• What is the maximum allowed voltage on the EN pin?
  The maximum allowed voltage on the EN pin is 6V, exceeding which may cause damage to the device. It's recommended to use a voltage divider or a level shifter if the control signal is higher than 6V.
• Can I use this device in a high-temperature environment?
  While the RSX088LAP2STR is rated for operation up to 105°C, it's essential to consider the derating curves and thermal management to ensure reliable operation in high-temperature environments.
• How do I calculate the output voltage ripple and noise?
  Output voltage ripple and noise can be calculated using the datasheet values for output capacitance, ESR, and switching frequency. ROHM provides a calculation formula in the application note AN11984.