Timeline for Adapating a single cell Li-ion battery voltage to 3.3V low power application
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 10, 2020 at 17:25 | comment | added | user57037 | @MohammedNoureldin search at digikey.com or mouser.com. LDO's with quiescent current of 10uA or less are available. | |
| Oct 10, 2020 at 16:17 | comment | added | Mohammed Noureldin | I could not find any chip with idle current near to 10 µAh, the best I found is LM2596 with ~ 80 mAh when idle. | |
| Aug 27, 2018 at 0:33 | vote | accept | Resethel | ||
| Aug 27, 2018 at 0:30 | vote | accept | Resethel | ||
| Aug 27, 2018 at 0:30 | |||||
| Aug 26, 2018 at 17:52 | comment | added | user57037 | @ChrisStratton, it is true, what you say. You might be able to get better battery life by operating it at a lower voltage with a buck. But my answer applies down to 3.0, which is the lowest voltage entertained by the OP. Also, my comment about Iq still stands. State of the art LDO will have lower Iq than state of the art buck, so if the device spends long periods at a low-power state, the LDO will still likely give better life. LDO probably wins on cost and implementation footprint also. | |
| Aug 26, 2018 at 17:39 | comment | added | Chris Stratton | The thing is, if the circuit operates fine at a lower voltage, operating it at 3.3v or even 3.0 volt or 2.8 volt is itself wasteful. So the real efficiency is not determined by the voltage you chose to operate it at, but rather the voltage you could have operated it at. That said, switchers require care in radio circuits, as if done wrong they an substantially increase the noise seen by the receiver. | |
| Aug 26, 2018 at 17:34 | history | answered | user57037 | CC BY-SA 4.0 |