A good PCB layout for the MAX6898AALT+T involves keeping the input and output traces short and wide, using a solid ground plane, and placing the device close to the power source. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To ensure proper power-up and initialization, connect the EN pin to a logic-high signal, and ensure the input voltage (VIN) is within the recommended range (2.7V to 5.5V). Also, make sure the output capacitor (COUT) is properly sized and placed close to the device.
The MAX6898AALT+T can deliver up to 1.5A of output current, but this may vary depending on the input voltage, output voltage, and ambient temperature. It's essential to check the device's thermal performance and adjust the output current accordingly.
The output voltage of the MAX6898AALT+T can be adjusted by using an external resistor divider network connected to the FB pin. The output voltage can be calculated using the formula: VOUT = 0.6V x (R1 / R2 + 1), where R1 and R2 are the resistors in the divider network.
The MAX6898AALT+T has a thermal shutdown feature that activates when the junction temperature exceeds 150°C. To ensure reliable operation, it's essential to provide adequate heat sinking, use a thermally conductive PCB material, and keep the device away from heat sources.
MAX6898AALT+T datasheet
by Maxim Integrated Products
