ZHCSCA0I March 2014 – August 2024 BQ2970 , BQ2971 , BQ2972 , BQ2973
PRODUCTION DATA
For this design example, use the parameters listed in Table 9-1.
| DESIGN PARAMETER | EXAMPLE VALUE at TA = 25°C |
|---|---|
| Input voltage range | 4.5V to 7V |
| Maximum operating discharge current | 7A |
| Maximum Charge Current for battery pack | 4.5A |
| Overvoltage Protection (OVP) | 4.275V |
| Overvoltage detection delay timer | 1.2s |
| Overvoltage Protection (OVP) release voltage | 4.175V |
| Undervoltage Protection (UVP) | 2.8V |
| Undervoltage detection delay timer | 150ms |
| Undervoltage Protection (UVP) release voltage | 2.9V |
| Charge Overcurrent detection (OCC) voltage | –70mV |
| Charge Overcurrent Detection (OCC) delay timer | 9ms |
| Discharge Overcurrent Detection (OCD) voltage | 100mV |
| Discharge Overcurrent Detection (OCD) delay timer | 18ms |
| Load Short Circuit Detection SCC) voltage, BAT to –V ≤ threshold | 500mV |
| Load Short Circuit Detection (SCC) delay timer | 250μs |
| Load Short Circuit release voltage, BAT to –V ≥ Threshold | 1V |