The maximum power dissipation of the LTC1069-1IS8 is 1.4W, which is dependent on the package thermal resistance and the ambient temperature.
To minimize noise and ensure proper operation, it is recommended to follow good PCB layout practices such as separating analog and digital grounds, using a solid ground plane, and placing bypass capacitors close to the device. Additionally, the datasheet provides a recommended PCB layout diagram.
The recommended input capacitance is 10nF to 100nF, and the recommended output capacitance is 10nF to 100nF. However, the optimal capacitance values may vary depending on the specific application and operating conditions.
The output voltage ripple can be calculated using the formula: ΔVout = (Iout * ESL) / (Cout * fsw), where Iout is the output current, ESL is the equivalent series inductance of the output capacitor, Cout is the output capacitance, and fsw is the switching frequency.
The maximum operating frequency of the LTC1069-1IS8 is 100kHz. However, the device can operate at higher frequencies with reduced performance and increased power dissipation.