A good PCB layout for the LT1995 involves keeping the input and output traces short and away from each other, using a solid ground plane, and placing the input and output capacitors close to the device. A 4-layer PCB with a dedicated ground plane is recommended.
To ensure stability, make sure to follow the recommended component values and PCB layout guidelines. Also, ensure that the input and output capacitors are of high quality and have low ESR. Additionally, adding a small resistor (e.g., 10Ω) in series with the output can help prevent oscillations.
The maximum input voltage that the LT1995 can handle is 12V, but it's recommended to keep the input voltage below 10V to ensure reliable operation and prevent damage to the device.
The LT1995 is rated for operation up to 125°C, but its performance may degrade at high temperatures. It's recommended to derate the device's performance and ensure proper heat sinking to prevent overheating.
The output voltage ripple of the LT1995 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.
LT1995IMS#PBF datasheet
by Linear Technology
