The recommended PCB layout for the MAX1812EUB+ involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the traces between the device and the capacitors. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane to reduce noise and improve performance.
The selection of input and output capacitors for the MAX1812EUB+ depends on the specific application requirements. In general, it's recommended to use low-ESR capacitors with a value of 10uF to 22uF for the input capacitor and 10uF to 47uF for the output capacitor. The capacitor voltage rating should be at least 1.5 times the maximum input voltage.
The MAX1812EUB+ has an operating ambient temperature range of -40°C to +85°C. However, the device can be operated at a higher temperature range with derating. It's recommended to consult the datasheet for more information on temperature derating.
To ensure the MAX1812EUB+ is stable and doesn't oscillate, it's recommended to follow the recommended PCB layout, use the correct input and output capacitors, and ensure that the input voltage is within the recommended range. Additionally, it's recommended to add a small ceramic capacitor (e.g. 10nF) between the VIN pin and the GND pin to improve stability.
The maximum output current capability of the MAX1812EUB+ is 1.5A. However, the device can be operated at a higher output current with proper thermal management and derating. It's recommended to consult the datasheet for more information on output current derating.
MAX1812EUB+ datasheet
by Maxim Integrated Products
