SLUSF18A October 2023 – December 2023 BQ25638
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
The TS_ISET_PRECOOL, TS_ISET_COOL, TS_ISET_PREWARM and TS_ISET_WARM cool and warm charge current fold backs are based on a 1C charging rate. The 1C rate is the battery capacity in mA-hours divided by 1 hour, so that a 500 mA-hour battery would have a 1C charging rate of 500 mA. The same battery would have a 2C charging rate of 1,000 mA. In order to convert the charging foldback, the host must set the CHG_RATE register to the C rate for the battery. This scales the foldback accordingly.
When TS_ISET_PRECOOL, TS_ISET_COOL, TS_ISET_PREWARM or TS_ISET_WARM is set to either 00 (suspend) or 11 (unchanged), the CHG_RATE setting has no effect. A summary is provided in Table 7-3
TS_ISET_PRECOOL, TS_ISET_COOL, TS_ISET_PREWARM or TS_ISET_WARM | CHG_RATE | FOLD-BACK CURRENT AS PERCENTAGE OF ICHG |
---|---|---|
00 | Any | 0% (Suspended) |
01 (20%) | 00 (1C) | 20% |
01 (2C) | 10% | |
10 (4C) | 5% | |
11 (6C) | 3.3% | |
10 (40%) | 00 (1C) | 40% |
01 (2C) | 20% | |
10 (4C) | 10% | |
11 (6C) | 6.6% | |
11 | Any | 100% |