Texas Instruments provides a recommended PCB layout for the LM48411TLX/NOPB in the datasheet, but it's also recommended to follow general guidelines for thermal management, such as using a solid ground plane, placing thermal vias under the device, and using a thermal pad on the bottom of the device.
To ensure proper biasing, follow the recommended operating conditions in the datasheet, including the input voltage range, output voltage range, and bias current. Additionally, ensure that the device is operated within the recommended temperature range and that the input and output capacitors are properly selected.
The maximum output current capability of the LM48411TLX/NOPB is 1.1A per channel, but this can be limited by the thermal performance of the device and the PCB. It's recommended to derate the output current based on the ambient temperature and the thermal resistance of the device and PCB.
The LM48411TLX/NOPB has built-in overvoltage protection (OVP) and undervoltage lockout (UVLO) features, but it's still recommended to add external protection circuitry, such as a voltage supervisor or a crowbar circuit, to ensure the device is protected from voltage transients and faults.
The recommended input capacitor type is a low-ESR ceramic capacitor, such as an X5R or X7R dielectric, with a value of 10uF to 22uF. The input capacitor should be placed as close to the device as possible to minimize noise and ensure stable operation.
LM48411TLX/NOPB datasheet
by Texas Instruments
