Voltage Protection For 2-,3-or,4-Cell Lion Batteries (2nd Protection)

The BQ29400 bq29400A, BQ29401 and BQ29405 are BiCMOS secondary protection ICs for 2-, 3-, or 4-cell Lithium-Ion battery packs that incorporate a high-accuracy precision over voltage detection circuit. They include a programmable delay circuit for over voltage detection time.
Each cell in a multiple cell pack is compared to an internal reference voltage. If one cell reaches an overvoltage condition, the protection sequence begins. The bq2940x device starts charging an external capacitor through the CD pin. When the CD pin voltage reaches 1.2 V, the OUT pin changes from a low level to a high level.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
BQ29401PW Texas Instruments Voltage Protection for 2-,3-or,4-Cell Lion Batteries (2nd Protection) 8-TSSOP -20 to 85
BQ29401 's PackagesBQ29401 's pdf datasheet
BQ29401DCT SM8
BQ29401DCT3 SM8
BQ29401DCT3E6 SM8
BQ29401DCTR SM8
BQ29401PW TSSOP
BQ29401PWR TSSOP




BQ29401 Pinout, Pinouts
BQ29401 pinout,Pin out
This is one package pinout of BQ29401,If you need more pinouts please download BQ29401's pdf datasheet.

BQ29401 Application circuits
BQ29401 circuits
This is one application circuit of BQ29401,If you need more circuits,please download BQ29401's pdf datasheet.


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BQ29401 Application Notes BQ29401 RoHS BQ29401 Circuits BQ29401 footprint