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BQ294707DSGT Datasheet(PDF) 1 Page - Texas Instruments

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Part # BQ294707DSGT
Description  Overvoltage Protection for 2-Series to 4-Series Cell Li-Ion Batteries
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

BQ294707DSGT Datasheet(HTML) 1 Page - Texas Instruments

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3
2
6
4
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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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