BQ2947是TI公司的一款电池监控,保护及认证解决方案产品，BQ2947是可提供精确逐电池电压监视的锂离子保护 IC 系列，本页介绍了BQ2947的产品说明、应用、特性等，并给出了与BQ2947相关的TI元器件型号供参考。
BQ2947 - 可提供精确逐电池电压监视的锂离子保护 IC 系列 - 电池监控,保护及认证解决方案 - 电池管理产品 - TI公司（Texas Instruments，德州仪器）
- 2-, 3-, and 4-Series Cell Overvoltage Protection
- External Capacitor-Programmed Delay Timer
- Factory Programmed OVP Threshold (Threshold Range 3.85 V to 4.6 V)
- Output Options: Active High or Open Drain Active Low
- High-Accuracy Overvoltage Protection: ±10 mV
- Low Power Consumption ICC ≈ 1 µA (VCELL(ALL) < VPROTECT)
- Low Leakage Current Per Cell Input < 100 nA
- Small Package Footprint
- 8-Pin WSON (2.00 mm x 2.00 mm)
- Notebook
- UPS Battery Backup
The bq2947 family is an overvoltage monitor and protector for Li-Ion battery pack systems. Each cell is monitored independently for an overvoltage condition.
In the bq2947 device, an external delay timer is initiated upon detection of an overvoltage condition on any cell. Upon expiration of the delay timer, the output is triggered into its active state (either high or low, depending on the configuration). The external delay timer feature also includes the ability to detect an open or shorted delay capacitor on the CD pin, which will similarly trigger the output driver in an overvoltage condition.
For quicker production-line testing, the bq2947 device provides a Customer Test Mode with reduced delay time.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| bq294700 | WSON (8) | 2.00 mm × 2.00 mm |
