The recommended PCB layout for the MAX8668ETEV+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 MAX8668ETEV+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 MAX8668ETEV+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.
The MAX8668ETEV+T has a specific power-up and power-down sequence that should be followed to ensure proper operation. The device should be powered up by applying the input voltage to the VIN pin, followed by the enable signal to the EN pin. During power-down, the enable signal should be removed first, followed by the input voltage. Additionally, it's recommended to use a soft-start circuit to limit the inrush current during power-up.
The MAX8668ETEV+T has a maximum output current capability of 2A. However, the actual output current capability may be limited by the input voltage, output voltage, and the device's thermal performance. It's recommended to ensure the device is operated within its specified operating conditions to prevent overheating and ensure reliable operation.
MAX8668ETEV+T datasheet
by Maxim Integrated Products
