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Texas Instruments BQ29412DCTT — Discrete Semiconductors

BQ29412DCTT Texas Instruments Battery Protection IC

MPNBQ29412DCTT
End of Life

Texas Instruments BQ29412DCTT Li-Ion battery protection IC, 2-4 cell, over-voltage fault protection, 8-LSSOP/MSOP SM8 package, Tape & Reel or Cut Tape.

$2.99Ref. price · indicative, final on quote
Texas Instruments BQ29412DCTT datasheet (PDF)
Packaging8-LSSOP, 8-MSOP (0.110", 2.80mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ29412DCTT specifications
ParameterValue
MountingSurface Mount
Operating temperature-40°C ~ 110°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionBattery Protection
Case8-LSSOP, 8-MSOP (0.110\", 2.80mm Width)
Number of cells2 ~ 4
Fault protectionOver Voltage
Battery chemistryLithium Ion

Product details

2-4 cell Li-Ion over-voltage watchdog

The Texas Instruments BQ29412DCTT is a dedicated battery protection IC that monitors 2 to 4 series-connected lithium-ion cells for over-voltage conditions. When any cell exceeds the over-voltage threshold, the IC triggers a fault output that can drive an external FET to disconnect the pack — the protection logic is hardwired, no firmware needed. Operating from -40°C to 110°C, it covers the full commercial and industrial temperature envelope for portable and backup-power applications.

SM8 package — rework and layout notes

Housed in an 8-lead LSSOP/MSOP with 0.110-inch body width (2.80 mm), the SM8 package is a low-profile, fine-pitch SOIC variant suited for space-constrained battery packs. Pin 1 is clearly marked on the top-side silkscreen; the narrow 2.80 mm width means the footprint fits on a single-layer PCB if the traces are kept to 0.25 mm or finer.

Frequently asked questions

What is BQ29412DCTT's function and what battery chemistry does it support?

It is a battery protection IC with over-voltage fault detection, designed specifically for Lithium-Ion (Li-Ion) battery packs. It monitors 2 to 4 series cells and asserts a fault output when any cell exceeds the over-voltage threshold.