A good PCB layout for the LT1351 involves keeping the input and output traces short and wide, using a solid ground plane, and placing the input and output capacitors close to the device. Additionally, it's recommended to use a separate analog ground plane and to keep digital signals away from the analog section.
To ensure stability, make sure to follow the recommended component values and PCB layout guidelines. Also, ensure that the output capacitor has a low ESR and is properly sized for the output current. Additionally, avoid using long input traces and keep the input impedance low.
The maximum input voltage of the LT1351 is 15V, but it's recommended to keep the input voltage below 12V for optimal performance and to prevent overheating.
The LT1351 is rated for operation up to 125°C, but its performance may degrade at high temperatures. It's recommended to derate the output current and voltage at high temperatures to ensure reliable operation.
The output voltage ripple of the LT1351 can be calculated using the formula: ΔVout = (Iout * ESR) / (f * Cout), where Iout is the output current, ESR is the output capacitor's equivalent series resistance, f is the switching frequency, and Cout is the output capacitance.
LT1351CMS8#TRPBF datasheet
by Linear Technology
