The recommended PCB layout for the MAX8668ETET+T involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the traces between the device and the capacitors. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane to reduce noise and EMI.
The selection of input and output capacitors for the MAX8668ETET+T depends on the specific application requirements. In general, it's recommended to use low-ESR capacitors with a capacitance value of 10uF to 22uF for the input and output. The capacitor voltage rating should be at least 1.5 times the maximum input voltage. Additionally, the capacitor should be able to handle the ripple current and have a low equivalent series resistance (ESR) to minimize power loss.
The MAX8668ETET+T has an operating ambient temperature range of -40°C to +125°C. However, the device's performance and reliability may be affected at extreme temperatures. It's recommended to derate the device's performance and ensure proper thermal management to prevent overheating.
To ensure proper power-up and power-down of the MAX8668ETET+T, it's recommended to follow a controlled power-up sequence. The input voltage should be ramped up slowly (typically 1ms to 10ms) to prevent inrush currents and voltage overshoots. During power-down, the input voltage should be ramped down slowly to prevent voltage undershoots and ensure a clean shutdown.
The recommended input voltage range for the MAX8668ETET+T is 2.7V to 5.5V. Operating the device outside of this range may affect its performance, efficiency, and reliability. It's recommended to ensure the input voltage is within the specified range to ensure optimal performance and prevent damage to the device.
MAX8668ETET+T datasheet
by Maxim Integrated Products
