The maximum input voltage that can be applied to the LTC1261CS8 is 7V, although the recommended operating range is 4.5V to 5.5V.
To ensure accurate voltage regulation, make sure to decouple the input and output pins with suitable capacitors, and keep the output voltage sense lines as short as possible to minimize noise and voltage drops.
The LTC1261CS8 is rated for operation up to 125°C, but the maximum junction temperature (TJ) should not exceed 150°C. Be sure to follow proper thermal design and heat sinking to ensure reliable operation.
The output voltage of the LTC1261CS8 is determined by the resistor divider network connected to the FB pin. Use the formula: VOUT = 2.5V x (1 + R1/R2), where R1 and R2 are the resistors in the divider network.
The LTC1261CS8 can maintain regulation down to a minimum load current of 1mA, but it's recommended to ensure a minimum load of 10mA to ensure stable operation.