AnsweredAssumed Answered

LTC4120 charge problems

Question asked by mgs on Apr 23, 2018
Latest reply on May 7, 2018 by WATaylor

Dear fellows,
We are using the LTC4120 in out sport prototype device. As power transmitter we are using the basic example shows at the datasheet.


Generally we have a successed battery charging, but in some cases it fails:


- Some times a given Rx won't work with a given Tx, but the charge works if we try with another tx. It occurs specially when the battery voltage is bellow than 3.5V (Vfloat is selected to 4.1V).
- In other cases, when the battery voltage is bellow than 3V, the charge fails. The charging led indicator is on (with a diffuse color), but the battery voltage never growup.


Could you give me any clue of what could be failing?