LB1868M-W-AH datasheet by onsemi

LB1868M-W-AH Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  A good PCB layout for the LB1868M-W-AH should include a solid ground plane, wide power traces, and a thermal relief pattern under the IC to facilitate heat dissipation. A 4-layer PCB with a dedicated thermal layer is recommended.
• How do I ensure reliable operation in high-temperature environments?
  To ensure reliable operation in high-temperature environments, it's essential to follow proper thermal design guidelines, such as providing adequate heat sinking, using a thermal interface material, and keeping the junction temperature below 150°C.
• What is the maximum allowed voltage on the input pins?
  Although the datasheet specifies a maximum input voltage of 5.5V, it's recommended to limit the input voltage to 5V to ensure reliable operation and prevent damage to the internal ESD protection diodes.
• Can I use the LB1868M-W-AH in a battery-powered device?
  Yes, the LB1868M-W-AH can be used in battery-powered devices. However, it's essential to consider the device's low-dropout voltage and quiescent current to ensure efficient power management and prolong battery life.
• How do I troubleshoot issues with the output voltage regulation?
  To troubleshoot issues with output voltage regulation, check the input voltage, output load, and feedback network. Ensure that the feedback resistors are correctly connected and that the output capacitor is suitable for the application. Also, verify that the device is not overheating.