Texas Instruments provides a recommended PCB layout in the LM25101ASD datasheet, which includes guidelines for component placement, trace routing, and thermal management. Additionally, the TI website offers a PCB layout guide and a thermal design guide for the LM25101ASD.
The selection of input and output capacitors depends on the specific application requirements, such as voltage rating, capacitance value, and ESR. TI recommends using X5R or X7R ceramic capacitors with a voltage rating of at least 2x the input voltage. The datasheet provides guidelines for capacitor selection and a capacitor selection tool is available on the TI website.
The maximum ambient temperature for the LM25101ASD is 85°C, but the device can operate up to 105°C with derating. The datasheet provides a thermal derating curve to determine the maximum output current at higher temperatures.
To ensure stability, follow the recommended PCB layout, use the recommended input and output capacitors, and ensure that the input voltage is within the specified range. Additionally, the datasheet provides guidelines for stability analysis and a stability calculator tool is available on the TI website.
The typical efficiency of the LM25101ASD is around 95% at full load, but it can vary depending on the input voltage, output voltage, and load current. The datasheet provides efficiency curves for different operating conditions.
LM25101ASD/NOPB datasheet
by Texas Instruments
