Microchip recommends a thermal pad on the bottom of the package, connected to a large copper area on the PCB to dissipate heat. A minimum of 2oz copper thickness is recommended, and the thermal pad should be connected to a ground plane to reduce thermal resistance.
To ensure reliable operation at high temperatures, it's essential to follow the recommended operating conditions, including derating the output current and voltage according to the temperature derating curve. Additionally, ensure good thermal design, and consider using a heat sink or thermal interface material if necessary.
The maximum allowed voltage on the input pins is 6V, which is the absolute maximum rating. However, for reliable operation, it's recommended to keep the input voltage within the recommended operating range of 4.5V to 5.5V.
The APT2X31D120J requires a specific power sequencing to prevent damage. The recommended power-up sequence is to apply the input voltage (VIN) before the enable signal (EN). The power-down sequence should be reversed, with the enable signal turned off before the input voltage is removed.
Microchip recommends using a high-quality, low-ESR ceramic capacitor with a value of 10uF to 22uF, and an X5R or X7R dielectric, placed as close as possible to the VIN pin to filter out noise and reduce ripple.
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APT2X31D120J Overview
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About Microchip
Microchip Technology Inc. is a leading manufacturer of microcontrollers and semiconductor devices for a wide range of applications in the aerospace, automotive, consumer electronics, industrial, and medical industries. Alongside a comprehensive product portfolio, Microchip Technology Inc. also provides easy-to-use development tools that enable engineers to create optimal designs quickly with minimal iterations to reduce risk while lowering total system costs to market. Headquartered in Chandler, Arizona, th
