A good PCB layout for the TPS62111RSAT involves placing the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the input and output traces. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
Choose X5R or X7R ceramic capacitors with a voltage rating of at least 1.5 times the input voltage. The output capacitor should have a capacitance value of at least 10uF and an ESR of less than 100mΩ. The input capacitor should have a capacitance value of at least 4.7uF and an ESR of less than 100mΩ.
The maximum ambient temperature range for the TPS62111RSAT is -40°C to 125°C. However, the device can operate up to 150°C with derating.
The output voltage of the TPS62111RSAT can be calculated using the formula: VOUT = 0.8V x (1 + R1/R2), where R1 and R2 are the resistors connected to the FB pin.
The maximum input voltage for the TPS62111RSAT is 18V. However, the device can operate up to 20V with derating.
TPS62111RSAT datasheet
by Texas Instruments
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