Skip to main content
Texas Instruments BQ29732DSET — Analog & Data Acquisition
Texas Instruments

BQ29732DSET Battery Protection IC, 1-Cell Li-Ion, 6-WSON

MPNBQ29732DSET
End of Life

Texas Instruments BQ29732DSET, Battery Protection IC, 1-Cell Lithium Ion/Polymer, Fault Protection: Over Current, Over/Under Voltage, Short Circuit, -40°C to 85°C, 6-WFDFN / 6-WSON (1.5x1.5), Surface Mount, Active.

$1.25Ref. price · indicative, final on quote
BQ29732DSET datasheet
Packaging6-WFDFN
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

BQ29732DSET Technical Specifications
ParameterValue
Mounting typeSurface Mount
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionBattery Protection
Case6-WFDFN
Number of cells1
Fault protectionOver Current, Over/Under Voltage, Short Circuit
Battery chemistryLithium Ion/Polymer

Product details

Single-cell Li-ion protector with integrated fault detection

Rated for the industrial temperature range of -40°C to 85°C, it suits portable electronics, power tools, and IoT endpoints where the battery pack sees ambient extremes but not under-hood automotive heat.

Protection feature set — what each guard does

Overcurrent protection trips when the discharge current exceeds the internal threshold, preventing the FETs from exceeding their safe operating area during a hard load or output short. The undervoltage lockout disconnects the cell when its voltage drops below the safe cutoff, protecting against deep discharge that can permanently damage a Li-ion cell. Overvoltage protection disconnects charging when the cell voltage rises above the regulation limit, a safeguard against charger runaway. Short-circuit detection is a faster, higher-threshold trip that responds to a dead-short on the pack terminals.

Lifecycle and sourcing posture

It is RoHS3 compliant.

Frequently asked questions

What are the protection features of BQ29732DSET?

The BQ29732DSET integrates overcurrent, overvoltage, undervoltage, and short-circuit protection for a single Li-ion or Li-polymer cell.

Is BQ29732DSET suitable for 3.7V Li-ion cells?

Yes, the BQ29732DSET is designed for single-cell lithium-ion and lithium-polymer batteries, which have a nominal voltage of 3.6 V to 3.7 V and a full-charge voltage of 4.2 V. The overvoltage and undervoltage thresholds are set internally for this chemistry.