The recommended PCB layout for the LTC3851AEMSE-1#TRPBF involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the traces between the device and the capacitors. Additionally, it is recommended to use a separate analog ground plane and to keep the analog and digital grounds separate.
The selection of input and output capacitors for the LTC3851AEMSE-1#TRPBF depends on the specific application requirements. In general, low-ESR capacitors with a high ripple current rating are recommended. The input capacitor should be at least 10uF, and the output capacitor should be at least 22uF. The capacitor values can be adjusted based on the output voltage and current requirements.
The maximum ambient temperature range for the LTC3851AEMSE-1#TRPBF is -40°C to 125°C. However, the device can operate up to 150°C with derating. It is recommended to consult the datasheet for more information on temperature derating and thermal management.
The LTC3851AEMSE-1#TRPBF can be configured for a specific output voltage by adjusting the resistive divider network connected to the FB pin. The output voltage can be calculated using the formula: VOUT = 0.8V x (R1 + R2) / R2, where R1 and R2 are the resistors in the divider network.
The maximum output current capability of the LTC3851AEMSE-1#TRPBF is 1.5A. However, the device can deliver higher currents with proper thermal management and heat sinking. It is recommended to consult the datasheet for more information on thermal management and current derating.
LTC3851AEMSE-1#TRPBF datasheet
by Linear Technology
