Category: Hardware
Product Number: LTC4015
Hello,
My name is Giacomo and I'm an university student. I've designed a board with the LTC4015 I want to use as a Li-On Battery Charger for one single cell, using the Li-On programmable setting. As the datasheet suggests to do, I tied to GND CHEM1, CHEM0, CELLS2, CELLS1 pin and to INTVCC CELLS0, in order to control charge current and voltage for one cell. I started testing the PCB and I can read correctly via I2C the telemetry, the one cell setting but not the Li-On programmable setting, showing me that it is in Fixed 4.2V/cell Li-On setting, as if both CHEM1 and CHEM0 are tied to INTVCC. If I try to set the DAC Current and Voltage, it doesn't do anything, as the datasheet says in fixed parameters configurations. I don't know where the problem could be because using the same configuration method (LOW --> GND, HIGH --> INTVCC) the one cell setting works.
I can attach, if you need, my eagle schematic and PCB layout to help you understanding my setup. If you have any question, please contact me.
Thank you for your availability and I hope you can help me.