I want to load the battery with 2A.
VIN = 5V - from my labor power supply.
ILIM = 2A - M0, M1 are floating, RILIM are 10K - just to let this pin not open.
ISET = 2A. RISET = 1.05K.
VSYS = 4.23V.
At 5.0V input Ichg = 140mA only.
At 5.2V input Ichg = 330mA only.
At 5.4V input Ichg = 520mA only.
At 6.0V input Ichg = 176mA only.
My battery is a LiPo 3.7V.
If I start charge the battery the Vbatt was 3.5 Volt.
What do i wrong??
Please help!!
Many Thanks for your support!
Hello,
I’ve the same issue.
Very low charge current (250mA)
ISet = 1.05k.
Did you have fixed this issue?
Best Regards
Alex.
Hello Alex,
No, I cannot fixed the issue, Sorry.
I am still waiting for support from MPS…
Hi Sebastian,
Our apologies on the delayed response, thank you for your patience.
I have checked your schematic, majority checks out.
Can you please try the following:
Regards,
Nouman
Dear Mr Nouman,
I increase the R_ILIM to 32K - same issue…
Than I removed the R_ILIM completely - same issue…
VLIM ist set to 4.86V.
So if I power my system with 5.0 Volt, Ic is 250mA only.
If i power the system with 5.2V i get Ic to 850mA.
And if I power the system with 6Volt or more i get 180mA only.
But i never reach the default Ic (2A).
Is it necessary to use a resistor if the system is in defsult mode and M0 and M1 are floating?
