A good PCB layout for the TPS3897ADRYR involves placing the device close to the power source, using a solid ground plane, and keeping the input and output capacitors close to the device. Additionally, it's recommended to use a separate analog and digital ground plane to minimize noise coupling.
The input capacitor should be a low-ESR ceramic capacitor with a value between 1-10uF, while the output capacitor should be a low-ESR ceramic or tantalum capacitor with a value between 1-22uF. The capacitor values and types should be chosen based on the specific application requirements and noise tolerance.
The TPS3897ADRYR can handle input voltages up to 6.5V, but it's recommended to operate within the specified input voltage range of 2.7V to 5.5V for optimal performance and reliability.
The output voltage of the TPS3897ADRYR can be adjusted by using a resistive divider network between the output pin and the ground pin. The output voltage can be calculated using the formula: Vout = 0.8V x (R1 / R2 + 1), where R1 and R2 are the resistors in the divider network.
The thermal shutdown temperature of the TPS3897ADRYR is typically around 150°C, but it can vary depending on the specific device and application. It's recommended to consult the datasheet and application notes for more information.