Linear Technology provides a recommended PCB layout in the datasheet, but it's also important to follow general guidelines for thermal design, such as using a solid ground plane, placing thermal vias under the device, and keeping the thermal path short and direct.
The selection of input and output capacitors depends on the specific requirements of your application, such as the input voltage range, output voltage, and ripple current. Linear Technology provides some guidance in the datasheet, but it's also important to consider factors such as capacitor type, size, and ESR.
The LTM8028IY#PBF is rated for operation up to 125°C, but the maximum ambient temperature for reliable operation depends on the specific application and the thermal design. It's important to consider the device's thermal characteristics, such as its junction-to-ambient thermal resistance, and to ensure that the device is properly cooled.
To ensure reliable start-up and shutdown, it's important to follow the recommended start-up and shutdown sequences outlined in the datasheet, and to ensure that the input voltage and enable signals are properly sequenced. Additionally, it's important to consider the device's internal soft-start and UVLO circuits, and to ensure that the device is properly configured for the specific application.
Using a different inductor value or type than recommended can affect the device's performance, efficiency, and stability. It's important to consider the inductor's characteristics, such as its inductance, DC resistance, and saturation current, and to ensure that it is compatible with the device's operating frequency and current requirements.
