JAJSED5B August 2014 – January 2018 LM43601
PRODUCTION DATA.
The output voltage of the LM43601 device is externally adjustable using a resistor divider network. The divider network is comprised of top feedback resistor RFBT and bottom feedback resistor RFBB. Equation 11 is used to determine the output voltage of the converter:
Choose the value of the RFBT to be 1 MΩ to minimize quiescent current to improve light load efficiency in this application. With the desired output voltage set to be 3.3 V and the VFB = 1.016 V, the RFBB value can then be calculated using Equation 11. The formula yields a value of 444.83 kΩ. Choose the closest available value of 442 kΩ for the RFBB. See Adjustable Output Voltage for more details.