Hello everyone,
We have a problem of charging termination using LT3652.
Conditions as below.
* Input voltage is about 17.86V through AC adapter.
* float voltage is 16.52V. (four lithium ion cells)
* charge current is 1.5A
* start charging voltage is about 13.5V
We have inspected that charging start normally , but after about 4 hours passed, the
signal CHRG still remains "LOW".
Could you tell me what happened, and suggest some countermeasure.
Best regards,
Satoru Oku.
Fig1. Each node voltage of LT3652HV and battery

Fig2. Battery charging current (Voltage of between SENSE pin and BAT pin ) / RSENSE(0.068 ohm)
(charging current increase around 9000 sec. The calculated current value becomes less than 0.15A(C/10).
but CHRG pin signal didn't change.)