Timeline for What is the function of the second MOSFET in this lithium-ion battery charger circuit?
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Nov 11, 2023 at 20:25 | comment | added | Fredled | @J05HB3AN You are right. I didn't notice the different orientation. It's very lazy schematic design and can cause confusion. I deleted my answer. | |
| Nov 11, 2023 at 20:25 | comment | added | MiNiMe | @Fredled You're right, except it's not from Vcc but through M1's body diode. | |
| Nov 11, 2023 at 20:22 | comment | added | Fredled | I think they want to avoid a discharge trough the IC via Vcc when Vin goes lower than the battery voltage. | |
| Nov 11, 2023 at 16:12 | vote | accept | J05H B3AN | ||
| Nov 11, 2023 at 15:07 | history | edited | JRE | CC BY-SA 4.0 |
added 7 characters in body
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| Nov 11, 2023 at 14:28 | comment | added | MiNiMe | Thank you! I have stared at those circuits too and had doubts, but there's always some cleverness to them :) | |
| Nov 11, 2023 at 14:11 | comment | added | J05H B3AN | Ah that makes sense, and the datasheet was just trying to show off different ways of doing it. For them not to mention it in the datasheet, I knew it had to be something like that... but I wasn't 100% certain. I appreciate your answer! | |
| Nov 11, 2023 at 13:47 | history | answered | MiNiMe | CC BY-SA 4.0 |