10-pin (DSQ) package image


Standalone 1-cell 1-A linear battery charger with 4.2-V VBAT and Temperature Sensing

ACTIVE custom-reels CUSTOM Custom reel may be available


Qty Price

Additional package qty | Carrier options These products are exactly the same but come in a different carrier type

Package qty | Carrier 250 | SMALL T&R
Qty | Price 1ku | +

Quality information

Rating Catalog
RoHS Yes
Lead finish / Ball material NIPDAUAG | NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish / Ball material
  • MSL rating / Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Export classification

*For reference only

  • US ECCN: EAR99

Packaging information

Package | Pins WSON (DSQ) | 10
Operating temperature range (°C) 0 to 125
Package qty | Carrier 3,000 | LARGE T&R

Features for the BQ24040

  • Charging
    • 1% Charge voltage accuracy
    • 10% Charge current accuracy
    • Pin selectable USB 100 mA and 500 mA maximum input current limit
    • Programmable termination and precharge threshold, BQ24040 and BQ24045
    • High voltage (4.35 V) chemistry support with BQ24045
  • Protection
    • 30V Input rating; with 6.6 V or 7.1 V input overvoltage protection
    • Input voltage dynamic power management
    • 125°C thermal regulation; 150°C thermal shutdown protection
    • OUT Short-circuit protection and ISET short detection
    • Operation over JEITA range via battery NTC – 1/2 fast-charge-current at Cold, 4.06V at Hot, BQ24040 and BQ24045
    • Fixed 10 hour safety timer, BQ24040 and BQ24045
  • System
    • Automatic termination and timer disable mode (TTDM) for absent battery pack with thermistor, BQ24040 and BQ24045
    • Status indication – charging and done
    • Available in small 2 × 2 mm2 DFN-10 package
    • Integrated auto start function for production line testing, BQ24041
  • Functional Safety-Capable (BQ24040)
  • Safety-Related Certifications:
    • IEC 62368-1 CB Certification (BQ24040, BQ24045)

Description for the BQ24040

The BQ2404x series of devices are highly integrated Li-Ion and Li-Pol linear chargers devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter. The high input voltage range with input overvoltage protection supports low-cost unregulated adapters.

The BQ2404x has a single power output that charges the battery. A system load can be placed in parallel with the battery as long as the average system load does not keep the battery from charging fully during the 10 hour safety timer.

The battery is charged in three phases: conditioning, constant current and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold is exceeded.

The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge termination. The pre-charge current and termination current threshold are programmed through an external resistor on the BQ24040 and BQ24045. The fast charge current value is also programmable through an external resistor.


Qty Price

Additional package qty | Carrier options These products are exactly the same but come in a different carrier type

Package qty | Carrier 250 | SMALL T&R
Qty | Price 1ku | +

Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

A custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships tube or tray devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

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Lot and date code selection may be available

Add a quantity to your cart and begin the checkout process to view the options available to select lot or date codes from existing inventory.

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