A good PCB layout for the MAX8903CETI+T involves keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing the length of the traces between the IC and the capacitors. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To ensure stability, make sure to follow the recommended component values and PCB layout guidelines. Additionally, ensure that the input and output capacitors are of high quality and have low ESR. It's also important to decouple the input voltage with a capacitor and to use a low-ESR output capacitor.
The MAX8903CETI+T can handle input voltages up to 28V, but it's recommended to operate it within the specified input voltage range of 4.5V to 24V for optimal performance and reliability.
The MAX8903CETI+T is rated for operation up to 125°C, but it's recommended to derate the output current and input voltage at high temperatures to ensure reliability. Additionally, it's important to ensure good thermal design and heat sinking to prevent overheating.
To troubleshoot issues with the MAX8903CETI+T, start by checking the input voltage, output voltage, and current. Use an oscilloscope to check for oscillations or noise on the output. Also, check the PCB layout and component values to ensure they match the recommended values. If the issue persists, consult the datasheet and application notes for further guidance.
MAX8903CETI+T datasheet
by Maxim Integrated Products
