A good PCB layout for the FPF1009R involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the traces. It's also recommended to use a shielded inductor and to keep the device away from high-frequency signals.
To ensure stability, make sure the output capacitor is properly sized and placed close to the device. Also, ensure the input voltage is within the recommended range, and the device is operated within the recommended temperature range. Additionally, a small ceramic capacitor (e.g., 10nF) can be added between the VIN and GND pins to improve stability.
The FPF1009R can handle input voltages up to 18V, but it's recommended to operate within the recommended input voltage range of 2.7V to 12V for optimal performance and reliability.
The FPF1009R is rated for operation up to 125°C, but it's recommended to derate the output current and input voltage as the temperature increases to ensure reliable operation. Consult the datasheet for specific derating guidelines.
The output voltage of the FPF1009R can be calculated using the formula: VOUT = 0.8V x (1 + R1/R2), where R1 and R2 are the resistors used in the feedback network. Consult the datasheet for specific resistor values and calculation examples.
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