The recommended PCB layout for the MP6231DN-LF involves placing the input and output capacitors close to the IC, using wide traces for the power paths, and separating the analog and digital grounds. A 4-layer PCB with a solid ground plane is also recommended.
To ensure stability and prevent oscillations, it's essential to follow the recommended component values and PCB layout. Additionally, the output capacitor should have a low ESR, and the input capacitor should be placed close to the IC. A minimum output capacitance of 10uF is recommended.
The maximum input voltage that can be applied to the MP6231DN-LF is 18V. Exceeding this voltage may damage the IC.
The output voltage ripple and noise can be calculated using the following formula: ΔVout = (Iout * ESL) / (Cout * fsw), where ESL is the equivalent series inductance of the output capacitor, Cout is the output capacitance, and fsw is the switching frequency.
The thermal derating of the MP6231DN-LF is 1.5°C/W above 25°C. This means that the maximum power dissipation decreases by 1.5W for every 1°C increase in temperature above 25°C.
MP6231DN-LF datasheet
by Monolithic Power Systems
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