I need to connect the MPM3695-10 to a 3.3V input, and will provide 0.95Vout. The datasheet states an external VCC Bias of 3.3V is required. Where does this external VCC Bias get connected? All example circuits in the datasheet use VIN = 4V to 16V.
Thank you!
Hello Scott,
Good question! You should be able to connect your 3.3V supply straight to the VCC pin to externally power all other internal circuitry.
Be sure to add a bypass capacitor between your input to the VCC pin and GND to filter any noise. Also note that writing to MTP memory isn’t supported by an externally connected 3.3V VCC bias.
Hope this helped,
Krishan
Thank you Krishan! That’s what I was thinking, but the pin descriptions refer to the VCC pins as Outputs for the internal LDO, so didn’t want to assume.
Appreciate your timely reply!
No problem, happy to assist!
Unless it isn’t explicitly mentioned, generally the VCC pin has a dual functionality when the main input voltage can’t step down to 3.3V, especially in low voltage applications like yours. Feel free to reach back if there are any more questions.