A good PCB layout for the LT6660HCDC-10#TRMPBF involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing trace lengths and widths to reduce noise and EMI. A 4-layer PCB with a dedicated power plane and a separate ground plane is recommended.
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 decoupled from the input. Additionally, add a small series resistor (e.g., 1Ω) between the output capacitor and the load to prevent oscillations.
The maximum input voltage for the LT6660HCDC-10#TRMPBF is 15V, but it's recommended to operate the device within the specified input voltage range (2.2V to 12V) for optimal performance and reliability.
While the datasheet recommends a specific output capacitor value and type, you can use a different value or type as long as it meets the required capacitance and ESR specifications. However, be aware that this may affect the device's performance, stability, and output voltage accuracy.
The output voltage accuracy and tolerance can be calculated using the formulae provided in the datasheet. The output voltage accuracy is typically ±1.5% over the operating temperature range, and the tolerance is typically ±2.5% over the operating temperature range.
LT6660HCDC-10#TRMPBF datasheet
by Linear Technology
