The recommended input capacitor value is 1uF to 10uF, depending on the input voltage and output current requirements. A larger capacitor value can help to reduce input voltage ripple and improve output voltage regulation.
To ensure stability, make sure to follow the recommended PCB layout guidelines, use a sufficient output capacitor value (at least 1uF), and keep the input and output capacitors close to the device. Also, avoid using long traces and minimize the loop area of the input and output connections.
The MAX634CSA can handle input voltages up to 32V, but it's recommended to keep the input voltage below 28V to ensure reliable operation and to prevent damage to the device.
The MAX634CSA is rated for operation up to 125°C, but it's recommended to derate the output current and input voltage as the temperature increases to ensure reliable operation. Consult the datasheet for more information on thermal derating.
The output voltage of the MAX634CSA is determined by the resistive divider network connected to the FB pin. Use the formula VOUT = VREF x (R1 + R2) / R2, where VREF is the internal reference voltage (2.5V) and R1 and R2 are the resistors in the divider network.
MAX634CSA datasheet
by Maxim Integrated Products
