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Texas Instruments BQ29412PWR — Discrete Semiconductors

BQ29412PWR Battery Protection IC, 2-4 Cell Li-Ion, 8-TSSOP

MPNBQ29412PWR
End of Life

Texas Instruments BQ29412PWR battery protection IC, Li-Ion, 2-4 cells, over-voltage fault protection, 8-TSSOP package, surface mount, -40°C to 110°C operating temperature.

$2.84Ref. price · indicative, final on quote
Texas Instruments BQ29412PWR datasheet (PDF)
Packaging8-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ29412PWR specifications
ParameterValue
MountingSurface Mount
Operating temperature-40°C ~ 110°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionBattery Protection
Case8-TSSOP (0.173\", 4.40mm Width)
Number of cells2 ~ 4
Fault protectionOver Voltage
Battery chemistryLithium Ion

Product details

Battery protection for 2-4 cell Li-ion packs

The Texas Instruments BQ29412PWR is a dedicated battery protection IC for lithium-ion packs with 2 to 4 series cells. Its primary job is over-voltage fault protection — it monitors each cell voltage and triggers an external discharge FET when any cell exceeds the over-voltage threshold. This is a single-function protector, not a full fuel-gauge or monitor; there is no overcurrent or short-circuit detection on-chip.

The 2-4 cell range covers common Li-ion pack voltages. The over-voltage threshold is factory-set; there is no external resistor programming. If your application also needs overcurrent, look at a multi-function protector like the BQ297xx series.

Frequently asked questions

Is BQ29412PWR suitable for 4-cell Li-ion battery pack?

Yes, the BQ29412PWR supports 2 to 4 series cells, so it is directly suitable for a 4-cell Li-ion pack. It provides over-voltage protection only.

Does BQ29412PWR have overcurrent protection?

No, the BQ29412PWR provides over-voltage fault protection only. Overcurrent and short-circuit protection must be handled externally.

What is the difference between BQ29412PWR and BQ29410PWR?

The BQ29412PWR and BQ29410PWR differ in their factory-set over-voltage thresholds. The BQ29412PWR is set for a higher threshold (typically 4.35 V per cell), while the BQ29410PWR triggers at a lower voltage (typically 4.2 V per cell). Both are 2-4 cell Li-ion protectors in the same 8-TSSOP package.