A thermal pad on the bottom of the package should be connected to a large copper area on the PCB to dissipate heat efficiently. A minimum of 2oz copper thickness is recommended.
To ensure stability, a minimum output capacitance of 10uF with an ESR of 1ohm or less is recommended. Additionally, a 1uF ceramic capacitor should be placed close to the VIN pin to filter out noise.
Although the recommended maximum input voltage is 5.5V, the device can withstand up to 6.5V for a short duration (less than 1 second) without damage. However, continuous operation above 5.5V is not recommended.
While the device is rated for operation up to 125°C, it's recommended to derate the output current by 50% when operating above 85°C to ensure reliability and prevent thermal shutdown.
To minimize EMI, use a shielded inductor, keep the switching node (SW pin) away from sensitive analog circuits, and use a common-mode choke or ferrite bead on the input lines.
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FMY1AT148 Overview
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