Skip to main content
Log in
Texas Instruments BQ7721611PWR — Discrete Semiconductors

BQ7721611PWR Battery Protection IC, 3–16 Cells, 24-TSSOP

MPNBQ7721611PWR
End of Life

Texas Instruments BQ7721611PWR, Battery Protection IC, 3 ~ 16 Cells, Lithium Ion, Over/Under Voltage & Over Temperature Protection, Surface Mount, 24-TSSOP, -40°C to 110°C.

$2.81Ref. price · indicative, final on quote
Texas Instruments BQ7721611PWR datasheet (PDF)
Packaging24-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ7721611PWR specifications
ParameterValue
MountingSurface Mount
Operating temperature-40°C ~ 110°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionBattery Protection
Case24-TSSOP (0.173\", 4.40mm Width)
Number of cells3 ~ 16
Fault protectionOver Temperature, Over/Under Voltage
Battery chemistryLithium Ion

Product details

The Texas Instruments BQ7721611PWR is a voltage and temperature protection IC for lithium-ion battery stacks. It monitors between 3 and 16 series cells, triggering a fault output when any cell exceeds the over-voltage threshold, drops below the under-voltage threshold, or the die temperature rises past the over-temperature limit.

Protection coverage and temperature grade

The fault-protection set covers over-voltage, under-voltage, and over-temperature.

Housed in a 24-TSSOP (0.173", 4.40 mm width) surface-mount package.

Frequently asked questions

How many cells can BQ7721611PWR protect?

The BQ7721611PWR monitors and protects between 3 and 16 series lithium-ion cells.

Is BQ7721611PWR compatible with LiFePO4 batteries?

The device is specified for lithium-ion chemistry. LiFePO4 cells have a different voltage profile, so the over-voltage and under-voltage thresholds may not align. Verify the thresholds against the LiFePO4 cell specification before committing the design.

What is the difference between BQ7721611PWR and BQ77216?

The BQ77216 is a related device in the same family. The BQ7721611PWR variant is the specific orderable configuration in the 24-TSSOP package with Tape & Reel packaging. The functional differences, if any, are detailed in the TI datasheet; the part number suffix indicates the packaging option.