Other Parts Discussed in Thread: BQ51050B
I am experiencing strange behavior with this part. I have I_BULK set at 147mA, and K_TERM is set at 10%, so I_TERM will will ~14.7mA.
However, I am seeing our batteries stuck in an UVLO condition, at 2.40V. V_RECT is fine ~5.10V. No matter how long it stays on the charger it won't give any charge to the battery, just stays stuck at 2.40V.
I have seen this response on another forum, from Application Engineer Mr. Bill Johns, and wonder if it applies to thus UVLO condition I'm seeing:
The problem has to do with the behavior of KILIM at low current, it will lose accuracy and has a wide deviation from unit to unit. Result is early termination or no termination. The no termination condition can trip the 10 hour safety timer resulting in a fault shutdown.
We recommend to set termination at about 50mA to avoid the above problem.
Any help will be appreciated.