Texas Instruments recommends a compact layout with the IC placed close to the battery, and the input and output capacitors placed as close as possible to the IC. A 4-layer PCB with a solid ground plane is recommended to minimize noise and EMI.
The output filter design should be optimized for the specific application's requirements. A general guideline is to use a low-ESR capacitor (e.g., ceramic or film) with a value between 10uF to 22uF, and a series resistor (e.g., 1 ohm to 10 ohm) to dampen the output filter. The output filter should be placed as close as possible to the IC.
The MC3486DG4 can handle input voltages up to 18V, but it's recommended to operate within the specified input voltage range of 6V to 16V for optimal performance and reliability.
The MC3486DG4 operates within a recommended temperature range of -40°C to 125°C. Ensure proper thermal design, including heat sinking and airflow, to keep the IC within this range. Avoid operating the IC near its maximum temperature rating for extended periods.
Key considerations for PCB thermal design include providing a solid ground plane, using thermal vias, and placing thermal pads under the IC. Ensure that the PCB material and layout allow for efficient heat dissipation.
MC3486DG4 datasheet
by Texas Instruments
