The recommended PCB layout for the MAX1697UEUT-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 MAX1697UEUT-T depends on the specific application requirements. In general, it's recommended to use low-ESR capacitors with a value of 10uF to 22uF for the input capacitor and 10uF to 47uF for the output capacitor. The capacitor voltage rating should be at least 1.5 times the maximum input voltage.
The MAX1697UEUT-T is rated for operation over a temperature range of -40°C to +125°C. However, the device's performance and reliability may be affected at extreme temperatures, and it's recommended to derate the device's output current and voltage accordingly.
The MAX1697UEUT-T has a specific power-up and power-down sequence that must 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. When powering down, the enable signal should be removed first, followed by the input voltage.
The typical efficiency of the MAX1697UEUT-T is around 95% to 97% depending on the input voltage, output voltage, and load current. The device's efficiency can be affected by various factors such as the input and output capacitor values, the PCB layout, and the operating temperature.
MAX1697UEUT-T datasheet
by Maxim Integrated Products
