ZHCSNP0A august 2020 – march 2021 BQ25171-Q1
PRODUCTION DATA
请参考 PDF 数据表获取器件具体的封装图。
VSET pin is used to program the device regulation voltage at end-of-charge using a ±1% pulldown resistor. The available pulldown resistor and corresponding charging levels are:
| RESISTOR | Li+ CONFIGURATION | NiMH CONFIGURATION |
|---|---|---|
| CHARGE VOLTAGE (V) | CELL COUNT | |
| > 150 kΩ | No charge (open-circuit) | No charge (open-circuit) |
| 100 kΩ | 1-cell LiFePO4: 3.50 V | No charge (open-circuit) |
| 82 kΩ | 1-cell LiFePO4: 3.60 V | No charge (open-circuit) |
| 62 kΩ | 1-cell LiFePO4: 3.70 V | 1-cell |
| 47 kΩ | 1-cell LiIon: 3.80 V | 1-cell + intermittent charge |
| 36 kΩ | 1-cell LiIon: 3.90 V | 2-cell |
| 27 kΩ | 1-cell LiIon: 4.05 V | 2-cell + intermittent charge |
| 24 kΩ | 1-cell LiIon: 4.10 V | 3-cell |
| 18 kΩ | 1-cell LiIon: 4.20 V | 3-cell + intermittent charge |
| 15 kΩ | 1-cell LiIon: 4.35 V | 4-cell |
| 11 kΩ | 2-cell LiFePO4: 7.00 V | 4-cell + intermittent charge |
| 8.2 kΩ | 2-cell LiFePO4: 7.20 V | 5-cell |
| 6.2 kΩ | 2-cell LiFePO4: 7.40 V | 5-cell + intermittent charge |
| 4.7 kΩ | 2-cell LiIon: 8.20 V | 6-cell |
| 3.6 kΩ | 2-cell LiIon: 8.40 V | 6-cell + intermittent charge |
| < 3.0 kΩ | No charge (short-circuit) | No charge (short-circuit) |
If either a short- or open-circuit condition is detected, charger stops operation and remains in the FAULT state until the input or CE pin is toggled.
Once a valid resistor value has been detected, the corresponding charge voltage is latched in and the pin is not continuously monitored during operation. A change in this pin will not be acknowledged by the IC until the input supply or CE pin is toggled.