The maximum input voltage that can be applied to the TPS54340BDDAR is 42V, but it's recommended to keep it below 40V for reliable operation.
To ensure the stability of the output voltage, make sure to use a suitable output capacitor with a low ESR (Equivalent Series Resistance) and a minimum capacitance of 10uF. Also, ensure that the input capacitor is properly sized and placed close to the device.
The maximum output current that the TPS54340BDDAR can deliver is 3A, but it's recommended to keep it below 2.5A for reliable operation and to prevent overheating.
The output voltage of the TPS54340BDDAR can be adjusted by using a resistor divider network between the output and the FB (feedback) pin. The output voltage can be calculated using the formula: Vout = 0.8V x (R1 + R2) / R2, where R1 and R2 are the resistors in the divider network.
The EN (enable) pin on the TPS54340BDDAR is used to enable or disable the device. When the EN pin is pulled high, the device is enabled and the output voltage is regulated. When the EN pin is pulled low, the device is disabled and the output voltage is turned off.