A good PCB layout for the MP2499MGQB-Z should have a solid ground plane, separate analog and digital grounds, and keep the input and output capacitors close to the IC. A 4-layer PCB with a dedicated power plane is recommended.
To ensure stability, make sure the output capacitor has a low ESR, and the feedback resistors are chosen to provide a stable gain margin. Also, ensure the input voltage is within the recommended range and the output voltage is not overloaded.
The maximum input voltage for the MP2499MGQB-Z is 24V, but it's recommended to keep it below 20V for optimal performance and reliability.
The MP2499MGQB-Z is rated for operation up to 85°C, but it's recommended to derate the output current and input voltage at higher temperatures to ensure reliability and prevent overheating.
The output voltage ripple and noise can be calculated using the datasheet specifications for output voltage ripple and noise, and the output capacitor's ESR and ESL values. A good rule of thumb is to aim for an output voltage ripple of less than 1% and noise of less than 10mV.
MP2499MGQB-Z datasheet
by Monolithic Power Systems
