Texas Instruments bq297xx Single-Cell Battery Cell Protection ICs
Texas Instruments bq297xx Single-Cell Battery Cell Protection ICs provide an accurate monitor and trigger threshold for overcurrent protection. This protection is done during high discharge/charge current operation or battery overcharge conditions. The Texas Instruments bq2970 device protects Li-Ion/Li-Polymer cells and monitors across the external power FETs for protection due to high charge or discharge currents. In addition, there is overcharge and depleted battery monitoring and protection. These features are implemented with low current consumption in NORMAL mode operation.
Features
- Input voltage range pack+ (VSS –0.3V to 12V)
- FET drive (CHG and DSG FET drive output)
- Voltage sensing across external FETs for Overcurrent Protection (OCP) is within ±5mV (typ.)
- 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 a depleted battery
- Factory programmed fault protection thresholds
- Fault detection voltage thresholds
- Fault trigger timers
- Fault recovery timers
- Modes of operation without battery charger enabled
- NORMAL Mode ICC = 4µA
- Shutdown Iq = 100nA
- Operating temperature range TA = –40°C to +85°C
- Package: 6-pin DSE (1.50mm × 1.50mm × 0.75mm)
Applications
- Tablet PC
- Mobile handset
- Handheld data terminals
Functional Block Diagram
發佈日期: 2016-05-23
| 更新日期: 2024-09-26