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BQ294707DSGT Datasheet(PDF) 1 Page - Texas Instruments |
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BQ294707DSGT Datasheet(HTML) 1 Page - Texas Instruments |
1 / 20 page 1 3 2 6 4 5 7 8 VDD V3 V2 V4 OUT VSS V1 CD bq294700, bq294701, bq294702 bq294703, bq294704, bq294705 bq294707 www.ti.com SLUSB15A – SEPTEMBER 2012 – REVISED SEPTEMBER 2013 Overvoltage Protection for 2-Series to 4-Series Cell Li-Ion Batteries with External Delay Capacitor Check for Samples: bq294700, bq294701, bq294702, bq294703, bq294704, bq294705, bq294707 1 FEATURES APPLICATIONS • 2-, 3-, and 4-Series Cell Overvoltage Protection • Notebook • External Capacitor-Programmed Delay Timer • UPS Battery Backup • 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 SON (2 mm x 2 mm) DESCRIPTION The bq2947xy family of products is an overvoltage monitor and protector for Li-Ion battery pack systems. Each cell is monitored independently for an overvoltage condition. In the bq2947xy 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 bq2947xy device provides a Customer Test Mode with reduced delay time. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. UNLESS OTHERWISE NOTED this document contains Copyright © 2012–2013, Texas Instruments Incorporated PRODUCTION DATA information current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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