The MAX5381LEUK+T is a high-frequency device, and proper layout and placement are crucial. It is recommended to keep the device close to the power source, use a solid ground plane, and minimize trace lengths to reduce noise and radiation. Additionally, it is recommended to place the device on the top layer of the PCB to reduce noise coupling.
The MAX5381LEUK+T requires a single 2.7V to 5.5V power supply. It is recommended to use a low-dropout linear regulator or a switching regulator with a low noise output to power the device. Power sequencing is not critical, but it is recommended to power up the device after the power supply has stabilized.
The recommended capacitor value for the BYPASS pin is 10nF to 100nF, with a ceramic or film capacitor type. The BYPASS capacitor helps to filter out high-frequency noise and improve the device's power supply rejection ratio (PSRR). A larger capacitor value can improve PSRR, but may also increase the device's startup time.
The MAX5381LEUK+T can be configured for different output voltage ranges by adjusting the resistive divider network connected to the FB pin. The device can output voltages from 0.9V to 5.5V, but the output voltage range is limited by the internal voltage reference and the resistive divider network.
The MAX5381LEUK+T has a maximum junction temperature of 150°C. To ensure reliable operation over temperature, it is recommended to keep the device's junction temperature below 125°C. This can be achieved by using a heat sink, reducing the device's power consumption, and ensuring good airflow around the device.
MAX5381LEUK+T datasheet
by Maxim Integrated Products
