Category: Hardware
Product Number: LT8365
Hi,
"I designed a circuit to control the output of the LT8365 regulator using the DAC of an STM32 MCU. I plan to vary the output voltage by adding an additional resistor in parallel to the feedback voltage(R2) divider resistors of the regulator, adjusting the resistance based on the DAC value. However, when I apply a DAC voltage lower than the regulator's feedback reference voltage of 1.6V, the circuit becomes unstable. When I apply a DAC between 3.3V and 1.6V, the circuit operates stably. I suspect that the issue is caused by the DAC current. Do you have any suggestions for a solution? What might the problem be?" My voltage range is 12V to 54V.
note: important signal node is DAC.
Thanks,
