Hi everyone,
I've encountered an issue with the LTC3569 regulator series and I'm seeking advice or insights from anyone who might have experienced something similar. In my project, I have consistently used the LTC3569EUD#PBF as a voltage regulator, and it has reliably provided a 3.3V output from a 5V input. Due to supply constraints, I recently had to opt for the LTC3569IUD#PBF, assuming it would function identically based on my interpretation of the datasheet. However, after integrating the LTC3569IUD#PBF into the same circuit environment, the output voltage unexpectedly dropped to 2.5V. To confirm the issue, I replaced it with the original LTC3569EUD#PBF, and the output promptly returned to the standard 3.3V. Can anyone clarify the operational differences between the 'EUD' and 'IUD' models of the LTC3569 series that could cause this discrepancy in performance? Additionally, any recommendations for addressing this issue would be greatly appreciated. Thanks in advance for your help!
Best, Chao