A good PCB layout for the LMZ10500SHE/NOPB involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the input and output traces. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
To ensure the device operates within the recommended operating conditions, make sure to provide a stable input voltage within the specified range (4.5V to 18V), keep the ambient temperature within the specified range (-40°C to 125°C), and avoid exceeding the maximum junction temperature (150°C).
A low-ESR ceramic capacitor with a value of 10uF to 22uF is recommended for the input capacitor. The capacitor should be placed as close to the VIN pin as possible.
The output voltage ripple can be calculated using the formula: ΔVout = (Iout x Rload) / (fsw x Cout), where Iout is the output current, Rload is the load resistance, fsw is the switching frequency, and Cout is the output capacitor value.
A low-ESR ceramic capacitor with a value of 10uF to 22uF is recommended for the output capacitor. The capacitor should be placed as close to the VOUT pin as possible.
