A good PCB layout for the LT1797CS5#TRPBF involves keeping the input and output traces short and separate, using a solid ground plane, and placing the bypass capacitors close to the device. A 4-layer PCB with a dedicated power plane and a dedicated ground plane is recommended.
To ensure stability, make sure to follow the recommended component values and PCB layout guidelines. Additionally, ensure that the output capacitor has a low ESR and is properly sized for the application. A minimum output capacitance of 10uF is recommended.
The maximum input voltage that can be applied to the LT1797CS5#TRPBF is 15V. Exceeding this voltage can cause damage to the device.
The LT1797CS5#TRPBF is rated for operation up to 125°C. However, the device's performance and reliability may degrade at high temperatures. It's recommended to derate the device's performance and ensure proper thermal management in high-temperature applications.
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.
LT1797CS5#TRPBF datasheet
by Linear Technology
