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Integrated Circuits (ICs)

BQ29443DRBR

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Texas Instruments

VOLTAGE PROTECTION FOR TWO, THREE, OR FOUR-CELL LI-ION BATTERIES(4.50V)

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Search across all available documentation for this part.

DocumentsVoltage Protection For Two-, Three-, or Four-Cell Li-Ion Batteries datasheet (Rev. C)
Product Image
Integrated Circuits (ICs)

BQ29443DRBR

Active
Texas Instruments

VOLTAGE PROTECTION FOR TWO, THREE, OR FOUR-CELL LI-ION BATTERIES(4.50V)

Deep-Dive with AI

DocumentsVoltage Protection For Two-, Three-, or Four-Cell Li-Ion Batteries datasheet (Rev. C)

Technical Specifications

Parameters and characteristics for this part

SpecificationBQ29443DRBR
Battery ChemistryLithium Ion
FunctionBattery Protection
Mounting TypeSurface Mount
Number of Cells [Max]4
Number of Cells [Min]2 cells
Operating Temperature [Max]110 °C
Operating Temperature [Min]-40 °C
Package / Case8-VDFN Exposed Pad
Supplier Device Package8-SON (3x3)

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

DistributorPackageQuantity$
DigikeyTape & Reel (TR) 3000$ 1.24
6000$ 1.19
LCSCPiece 1$ 3.47
200$ 1.34
500$ 1.30
1000$ 1.27
Texas InstrumentsLARGE T&R 1$ 2.04
100$ 1.68
250$ 1.21
1000$ 0.91

Description

General part information

BQ29443 Series

The bq2944x is a secondary overvoltage protection IC for 2-series, 3-series, or 4-series cell Li-Ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit.

FUNCTION

The voltage of each cell in a battery pack is compared to an internal reference voltage. If any cells reach an overvoltage condition, the bq2944x device starts a timer that provides a delay proportional to the capacitance on the CD pin. Upon expiration of the internal timer, the OUT pin changes from a low state to a high state. An optional latch configuration is available that holds the OUT pin in a high state indefinitely after an overvoltage condition has satisfied the specified delay timer period. The latch is released when the CD pin is shorted to GND.