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BQ296100DSGT Datasheet(PDF) 1 Page - Texas Instruments

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Part # BQ296100DSGT
Description  Overvoltage Protection for 2-Series, 3-Series, and 4-Series Cell Li-Ion Batteries with Regulated Output Supply
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

BQ296100DSGT Datasheet(HTML) 1 Page - Texas Instruments

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background image
Pack +
100
Ÿ
VCELL2
VCELL1
OUT
VDD
VSS
Pack
±
V2
V1
REG_EN
1
V3
REG
VCELL3
PWPD
bq2960
MCU
CTL
0.1 µF
0.1 µF
0.1 µF
0.1 µF
Protector
FETs
0.47 µF
10 M
(Optional)
External
Circuit
e.g., RTC
1
1
5
(*)
* can be removed if Vss will be
connected first during cell
connection
bq2960 REG out is controlled by MCU
VCELL2
VCELL1
OUT
VDD
VSS
1
1
Pack
±
V3
V2
V1
1
V4
REG
VCELL3
PWPD
bq2961
bq2962
0.1 µF
0.1 µF
0.1 µF
0.1 µF
Pack +
Protector
FETs
0.47 µF
External
Circuit
e.g., RTC
0.1 µF
VCELL4
1
5
(*)
* can be removed if Vss will be
connected first during cell
connection
100
Ÿ
Copyright © 2017, Texas Instruments Incorporated
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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
DATA.
bq2961, bq2962
SLUSBU5D – NOVEMBER 2013 – REVISED JANUARY 2017
bq296xxx Overvoltage Protection for 2-Series, 3-Series, and 4-Series Cell
Li-Ion Batteries with Regulated Output Supply
1
1 Features
1
2-Series, 3-Series, and 4-Series Cell Overvoltage
Protection (OVP)
Fixed Delay Timer to Trigger FET Drive Output
(3-s, 4-s, 5.5-s or 6.5-s Options)
Factory Programmed OVP Threshold (Threshold
Range 3.85 V to 4.6 V)
Output Options: Active High
High-Accuracy Overvoltage Protection:
±10 mV
Regulated Supply Output With Self-Disable and/or
External Enable/Disable Control
Options: 3.3-V, 2.5-V, and 1.8-V (bq2960,
bq2961)
Options: 3.3-V, 3.15-V, 3.0-V (bq2962)
Low Power Consumption ICC ≈ 4 µA
(VCELL(ALL) < VPROTECT)
Extra Low Power Consumption With REG Output
Disabled, ICC ~ 1.2 µA
Low Leakage Current Per Cell Input < 100 nA
Small Package Footprint
8-Pin WSON (2 mm × 2 mm)
2 Applications
Notebook PC
Ultrabooks
Medical
UPS Battery Backup
3 Description
The bq296xxx family is a high accuracy, low power
overvoltage protector with a 1-mA regulated output
supply for Li-Ion battery pack applications.
Each cell in a 2-series to 4-series cell stack is
individually monitored for an overvoltage condition.
An internally fixed-delay timer is initiated upon
detection of an overvoltage condition on any cell;
upon expiration of the delay timer, an output pin is
triggered into an active state to indicate that an
overvoltage condition has occurred.
The regulated output supply delivers up to 1-mA
(max) output current to drive always-on circuits, such
as a real-time clock (RTC) oscillator. The bq296xxx
family has a self-disable function to turn off the
regulated output if any cell voltage falls below a
certain threshold, thereby preventing drain on the
battery, and provides an external control to enable or
disable the regulated output.
Device Information(1)(2)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
bq2960
WSON (8)
2.00 mm × 2.00 mm
bq2961
bq2962
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
(2) The bq2960 is a 2-S to 3-S device. The bq2961 and bq2962
are 2-S to 4-S devices.
Simplified Schematic


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