AOL1426 datasheet by Alpha & Omega Semiconductor

AOL1426 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  AOL1426 has a thermal pad on the bottom, so it's essential to design a PCB with a solid copper plane connected to a thermal relief pattern to dissipate heat efficiently. A minimum of 2oz copper thickness is recommended.
• How do I ensure the device is properly biased for optimal performance?
  AOL1426 requires a stable input voltage (VIN) and a bypass capacitor (CBYP) to ensure proper biasing. A 10uF ceramic capacitor is recommended for CBYP, and VIN should be decoupled with a 1uF capacitor.
• What is the maximum allowed voltage on the enable pin (EN)?
  The enable pin (EN) has a maximum allowed voltage of 6V, which is higher than the recommended VIN of 5.5V. However, it's essential to ensure the EN voltage does not exceed VIN + 0.3V to prevent damage.
• Can I use AOL1426 in a high-temperature environment?
  AOL1426 has a maximum operating junction temperature (TJ) of 150°C. While it can operate in high-temperature environments, it's crucial to ensure proper thermal management and derate the device's power dissipation accordingly.
• How do I protect the device from overcurrent and overheating?
  AOL1426 has built-in overcurrent protection (OCP) and thermal shutdown (TSD) features. However, it's still recommended to add external protection circuits, such as a fuse or a PTC thermistor, to prevent damage from excessive current or temperature.