Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general best practices for switching regulator layout, such as keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing trace lengths and widths.
The datasheet provides a list of recommended inductors, but you can also use the following guidelines: choose an inductor with a saturation current rating above the peak current of the output, ensure the inductor has a low DC resistance (DCR) to minimize losses, and consider the inductor's physical size and cost.
The datasheet specifies a maximum input voltage of 5.5V, but it's important to note that the device can handle transient voltages up to 6V for short durations (less than 100ms). However, it's recommended to keep the input voltage below 5.5V to ensure reliable operation.
The output voltage of the TPS51113DRCT can be adjusted by changing the resistive divider ratio of the feedback resistors (RFBT and RFBG). The datasheet provides a formula to calculate the output voltage based on the resistor values.
The EN (enable) pin is used to turn the regulator on or off. When the EN pin is pulled high (above 1.4V), the regulator is enabled, and when it's pulled low (below 0.4V), the regulator is disabled. This pin can be used to implement power sequencing or to turn off the regulator during shutdown or sleep modes.
TPS51113DRCT datasheet
by Texas Instruments
