A 4-layer PCB with a solid ground plane and a separate power plane is recommended. The input and output capacitors should be placed close to the IC, and the feedback resistors should be placed close to the FB pin.
To ensure stability, the output capacitor should be a low-ESR type, and the feedback resistors should be chosen to ensure a stable gain margin. Additionally, the PCB layout should be designed to minimize parasitic inductance and capacitance.
The RT8525DGQW can handle input voltages up to 18V, but the maximum recommended input voltage is 15V to ensure reliable operation and to prevent damage to the IC.
The RT8525DGQW is rated for operation up to 125°C, but the maximum junction temperature should not exceed 150°C. The IC should be derated for high-temperature operation, and the thermal design should be carefully considered to ensure reliable operation.
The output voltage of the RT8525DGQW can be calculated using the formula: Vout = Vref x (1 + R1/R2), where Vref is the internal reference voltage (1.25V), R1 is the feedback resistor connected to the output, and R2 is the feedback resistor connected to the FB pin.
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