BQ2947 - 可提供精确逐电池电压监视的锂离子保护 IC 系列

BQ2947是TI德州仪器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，本站介绍了BQ2947的封装应用图解、特点和优点、功能等，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 - 德州仪器

产品特性

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)

产品应用

Notebook
UPS Battery Backup

产品说明

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.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
bq294700	WSON (8)	2.00 mm × 2.00 mm

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