LTC3426ES6#PBF datasheet by Linear Technology

LTC3426ES6#PBF Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the LTC3426ES6 can handle?
  The maximum input voltage that the LTC3426ES6 can handle is 18V, but it's recommended to keep it below 15V for optimal performance and reliability.
• How do I optimize the inductor selection for the LTC3426ES6?
  To optimize inductor selection, consider the inductor's saturation current, DC resistance, and core loss. A good starting point is to choose an inductor with a saturation current at least 1.5 times the maximum output current, and a DC resistance less than 100mΩ.
• What is the recommended PCB layout for the LTC3426ES6 to minimize noise and EMI?
  To minimize noise and EMI, keep the input and output capacitors close to the IC, use a solid ground plane, and keep the high-frequency switching nodes (e.g., LX and SW) away from sensitive analog nodes. Also, use a shielded inductor and orient it to minimize radiation.
• How do I adjust the output voltage of the LTC3426ES6?
  The output voltage of the LTC3426ES6 can be adjusted by changing the resistive divider ratio of the feedback resistors (RFB1 and RFB2). Use the formula VOUT = 0.8V x (1 + RFB2/RFB1) to calculate the desired resistor values.
• What is the thermal derating of the LTC3426ES6, and how do I calculate it?
  The thermal derating of the LTC3426ES6 is 30mW/°C above 25°C. To calculate the maximum power dissipation, use the formula PDMAX = (TJMAX - TA) / θJA, where TJMAX is the maximum junction temperature (150°C), TA is the ambient temperature, and θJA is the junction-to-ambient thermal resistance (45°C/W).