Toshiba recommends a 4-layer PCB with a solid ground plane on the bottom layer, and a separate power plane for the input and output. The input and output capacitors should be placed as close as possible to the IC, and the feedback resistors should be placed close to the output pin.
To ensure stability, make sure to follow the recommended PCB layout, use a sufficient output capacitor (at least 10uF), and ensure that the feedback resistors are within the recommended range (1kΩ to 10kΩ). Additionally, avoid using long wires or traces for the feedback loop, and keep the input and output capacitors close to the IC.
The maximum input voltage that can be applied to the RN1702,LF is 18V, but it's recommended to keep the input voltage below 15V to ensure reliable operation and prevent damage to the IC.
The RN1702,LF is rated for operation up to 125°C, but the maximum junction temperature should not exceed 150°C. It's recommended to derate the output current and input voltage at high temperatures to ensure reliable operation.
The output voltage ripple can be calculated using the formula: ΔVout = (Iout x Rout) / (f x Cout), where Iout is the output current, Rout is the output resistance, f is the switching frequency, and Cout is the output capacitance.
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RN1702,LF Overview
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