Mp2603 compatible with S-8261ABJMD-G3J2G?

Battery Management
1

Deat team of Monolithic Power,

I have a question regarding the compatibility of the mp2603 as charger with the undervoltage protection of S-8261ABJMD-G3J2G.
If the battery voltage goes below 3 v the S-8261ABJMD-G3J2G “disconnect” the battery from the circuit to avoid an underdischarge but if a charger is detected a charging modus is started.
How does the mp2603 react if a 0v battery voltage is detected?
I think this is not very clear from the datasheet.
Does it stop the charging process or does it start a trickle charging as the voltage is less than 2,6 v?

Thank you in advance,

Alex

2

Hello Alex,

Thank you for contacting the MPS Forum. I have seen your question and will try to get an answer as soon as possible.

Thank you,

Vinh Tran
Field Applications
Monolithic Power Systems
MPS Now

3

Hi Vinh,

First, happy new year!
Do you have an update for this?

Thanks,

Alex

4

Hello Alex,

I apologize for the delay. The MP2603, alone, will enter trickle charging when voltage is less than 2.6V. This voltage is below the 3V required for the S-8261ABJMD-G3J2G to “disconnect” the battery. So, trickle charge will never occur.

It is not clear how the charger will react when battery voltage is 0V. Please reset the device so battery voltage can be checked. See Figure 4-Flow Chart of Operations.

Thank you,
Vinh Tran
Field Applications Engineer