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Texas Instruments BQ24311DSGR — Power Management (PMIC / Gate Driver)

BQ24311DSGR Texas Instruments Li-Ion Battery Protection IC

MPNBQ24311DSGR
Active

Texas Instruments BQ24311DSGR, single-cell Lithium-Ion battery protection IC, overcurrent/overtemperature/overvoltage/undervoltage fault protection, -40°C to 125°C junction range, 8-WSON (2x2 mm) surface-mount package.

$0.8900Ref. price · indicative, final on quote
Texas Instruments BQ24311DSGR datasheet (PDF)
Packaging8-WFDFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ24311DSGR specifications
ParameterValue
MountingSurface Mount
Operating temperature-40°C ~ 125°C (TJ)
PackageTape & Reel (TR) Cut Tape (CT)
FunctionBattery Protection
Case8-WFDFN Exposed Pad
Fault protectionOver Current, Over Temperature, Over/Under Voltage
Battery chemistryLithium Ion

Product details

Single-cell Li-ion safety supervisor

The BQ24311DSGR is a dedicated battery protection IC from Texas Instruments for single-cell Lithium-Ion packs — it monitors the cell voltage and charge/discharge current, and shuts down the FETs if any of the four fault conditions (overcurrent, overtemperature, overvoltage, undervoltage) trip. That means the protection threshold is set inside the IC, not by external resistor dividers; the BOM stays small and the trip points are factory-trimmed.

Fault thresholds and thermal boundary

The protection set covers overcurrent, overtemperature, and over/under-voltage — no separate external sense resistor needed for the current limit. The overcurrent threshold is set internally; the datasheet provides the exact trip values. The 8-WFDFN exposed pad (2x2 mm) demands a thermal land pattern per the TI layout guideline — the pad is the primary heat path.

Frequently asked questions

How can I order BQ24311DSGR or check availability?

The BQ24311DSGR is an active Texas Instruments part. We source it through our distribution network and quote per your BOM quantity — submit an RFQ for current pricing and lead time.

What is the BQ24311DSGR used for?

It is a single-cell Lithium-Ion battery protection IC. Typical applications include portable devices, power tools, medical instruments, and any battery-powered equipment that needs overcurrent, overtemperature, and over/under-voltage shutdown.

Can BQ24311DSGR be used in a 2-cell Li-ion battery pack?

No — the BQ24311DSGR is designed for single-cell Lithium-Ion packs. For multi-cell protection, consider the BQ2084 series (2 to 4 cells) or the BQ79612 series (automotive-grade, functional safety).

Is BQ24311DSGR a direct replacement for BQ79612PAPRQ1?

No. The BQ79612PAPRQ1 is an automotive-grade battery monitor with SPI/UART interface and functional safety qualification (AEC-Q100), while the BQ24311DSGR is a simpler protection IC without digital communication. They serve different roles on the BOM.

What package does BQ24311DSGR come in?

It is supplied in an 8-WFDFN exposed-pad package, also called 8-WSON (2x2 mm). The tape-and-reel option is standard for automated assembly.