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Texas Instruments BQ24091DGQR — Power Management (PMIC / Gate Driver)

BQ24091DGQR USB Li-Ion Charger, 1A, 10-HVSSOP

MPNBQ24091DGQR
End of Life

Texas Instruments BQ24091DGQR, single-cell Li-Ion/Polymer linear charger, USB interface, programmable charge current to 1A, 10-HVSSOP package, 0°C to 125°C junction temperature range.

$1.3000Ref. price · indicative, final on quote
Texas Instruments BQ24091DGQR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ24091DGQR specifications
ParameterValue
MountingSurface Mount
Battery pack voltage4.2V
Supply voltage6.45V
Current - chargingConstant - Programmable
Charge current - max1A
InterfaceUSB
Operating temperature0°C ~ 125°C (TJ)
PackageTape & Reel (TR) Cut Tape (CT)
ManufacturerTexas Instruments
Case10-PowerTFSOP, 10-MSOP (0.118\", 3.00mm Width)
Number of cells1
Fault protectionOver Temperature, Over Voltage, Short Circuit
Battery chemistryLithium Ion/Polymer
Programmable featuresCurrent

Product details

The BQ24091DGQR is a single-cell Li-Ion or Li-Polymer linear charger from Texas Instruments, designed to draw power from a USB port. The charge current is programmable up to 1 A, which sets the charge-time floor for a typical 1000 mAh to 2000 mAh cell — expect roughly a 1-to-2 hour charge from a depleted state, depending on the programmed current and the thermal management of the PCB. The input supply range extends to 6.45 V max, so the part can tolerate the 5 V nominal from a USB host or adapter with margin for cable drop and transient overvoltage.

Fault protection set — no external supervisor needed

On-chip fault protection covers over-temperature, over-voltage, and short-circuit conditions. The protection is active during both charging and standby.

Package and footprint — 10-HVSSOP with thermal pad

Frequently asked questions

Does BQ24091DGQR have built-in power path management?

The evidence does not list power path management as a feature. The part provides over-temperature, over-voltage, and short-circuit fault protection, but a separate power-path management IC may be needed if the system requires simultaneous battery charging and system load operation from the USB input.

What is the maximum charge current for BQ24091DGQR?

The maximum programmable charge current is 1 A. The current is constant and programmable, so the designer sets the charge rate with an external resistor to match the battery capacity.