SLUAAG9 September 2021 BQ25170 , BQ25171-Q1 , BQ25175
Calculations for resistor ISET are provided in the data sheet. Table 7-1 provides a reference of calculated resistor values for various fast charge currents. Resistors with ±1% tolerance or better are recommended to minimize charge current error.
| ICHG (mA) | R-ISET (Ω) | Closest Standard Resistor (Ω) |
|---|---|---|
| 10 | 30 k | 30.1 k |
| 30 | 10 k | 10.0 k |
| 50 | 6000 | 6040 |
| 100 | 3000 | 3010 |
| 200 | 1500 | 1500 |
| 300 | 1000 | 1000 |
| 400 | 750 | 750 |
| 500 | 600 | 604 |
| 600 | 500 | 499 |
| 700 | 429 | 432 |
| 800 | 375 | 374 |
Tables 7-1 and 7-2 in section 7.3.1 in Data Sheet provide appropriate resistor values to use to set CHM_TMR and VSET pins.