Hello,
I made a prototype board design for the bq24230. The power switching aspect of the IC worked fine, but I had some weird issues with charging. It seemed that the charging rate varied depending on the current battery voltage. For example, with a 5V input source, I get the following: RISet = 15 kOhms Ichg = KIset/RIset KIset = 870 AOhms (typical), 797 (min), 975 (max) Ideally, Ichg = 870 AOhms / 15 KOhms = 58 mA.
However, I get the following, when putting an ammeter through the positive terminal of the battery.
| Battery Voltage (V) | Current (mA) |
| 3.4 | 59 |
| 3.6 | 59 |
| 3.7 | 59-60 |
| 3.8 | 60-61 |
| 3.85 | 63 |
| 3.9 | 64-65 |
| 3.95 | 67 |
| 4.00 | 69-70 |
| 4.05 | 75 |
| 4.10 | 77 |
| 4.15 | 79 |
| 4.18 | 60 |
| 4.185 | 50 |
| 4.19 | 40 |
I would appreciate any helpful feedback. Thanks in advance.
Sincerely,
Mehdi
