BQ2970, BQ2971, BQ2972, BQ2973
SLUSBU9H – MARCH 2014 – REVISED JUNE 2021
BQ297xx Cost-Effective
Voltage and Current Protection Integrated Circuit for SingleCell Li-Ion and Li-Polymer Batteries
1 Features
• Input
voltage range pack+: VSS – 0.
3 V to 12 V • FET drive:
– CHG and DSG FET drive output •
Voltage sensing across external FETs for
overcurrent protection (OCP) is within ±5 mV (typical) • Fault detection
– Overcharge detection (OVP) – Over-discharge detection (UVP) – Charge overcurrent detection (OCC) – Discharge overcurrent detection (OCD) – Load short-circuit detection (SCP) • Zero
voltage charging for depleted battery • Factory programmed fault protection thresholds
– Fault detectio...