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Texas Instruments BQ29412PWR — Discrete Semiconductors
Texas Instruments

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
BQ29412PWR datasheet
Packaging8-TSSOP (0.173", 4.40mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

BQ29412PWR Technical Specifications
ParameterValue
Mounting typeSurface 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 8-TSSOP package keeps the board footprint small, and the -40°C to 110°C operating range suits both portable equipment and industrial battery enclosures.

Over-voltage only — what that means for your BOM

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.

Active production, no end-of-life pressure

The BQ29412PWR is listed as Active with ROHS3 compliance. For volume production or spares, this part is sourced through independent distribution and quoted to order against an RFQ.

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.