A good PCB layout for the MAX9406ETJ+ involves keeping the input and output traces short and away from each other, using a solid ground plane, and placing the input and output capacitors close to the device. Additionally, using a shielded inductor and keeping the switching node (SW) away from sensitive nodes can help minimize EMI.
To ensure the MAX9406ETJ+ operates within its recommended operating conditions, make sure to operate it within the specified input voltage range (2.7V to 5.5V), keep the junction temperature below 125°C, and avoid exceeding the maximum current ratings for the input and output pins.
The recommended input capacitor value for the MAX9406ETJ+ is 1uF to 10uF, with a voltage rating of at least 6.3V. A low-ESR ceramic capacitor, such as an X5R or X7R type, is recommended to minimize voltage ripple and ensure stable operation.
To optimize the inductor selection for the MAX9406ETJ+, choose an inductor with a high saturation current rating, low DC resistance, and a suitable inductance value (e.g., 1uH to 10uH). Consider using a shielded inductor to minimize EMI. The inductor's physical size and shape should also be considered to ensure proper thermal performance.
The recommended output capacitor value for the MAX9406ETJ+ is 1uF to 10uF, with a voltage rating of at least 2.5V. A low-ESR ceramic capacitor, such as an X5R or X7R type, is recommended to minimize voltage ripple and ensure stable operation.
MAX9406ETJ+ datasheet
by Maxim Integrated Products
