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Texas Instruments BQ24278YFFR — Power Management (PMIC / Gate Driver)
Texas Instruments

BQ24278YFFR Single-Cell Li-Ion Charger, 2.5 A Max, 49-DSBGA

MPNBQ24278YFFR
Active

Texas Instruments BQ24278YFFR single-cell Li-ion battery charger, 2.5 A max charge current, 10 V max supply, constant-programmable current, fault protection, 49-DSBGA package, -40°C to 85°C.

$6.3000Ref. price · indicative, final on quote
BQ24278YFFR datasheet
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

BQ24278YFFR Technical Specifications
ParameterValue
Mounting typeSurface Mount
Battery pack voltage3.7V
Voltage10V
Current - chargingConstant - Programmable
Charge current - max2.5A
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR)
Case49-UFBGA, DSBGA
Number of cells1
Fault protectionOver Temperature, Over Voltage, Short Circuit
Battery chemistryLithium Ion

Product details

Single-cell Li-ion charger — the 2.5 A current ceiling

The BQ24278YFFR from Texas Instruments is a single-cell Li-ion battery charger with a maximum charge current of 2.5 A, programmable via external resistor. It accepts a supply input up to 10 V, covering USB and basic adapter sources. The 2.5 A ceiling sets the charge-time floor for a 1-cell pack — a 2000 mAh cell charges at roughly C/0.8, which keeps the thermal rise manageable in the 49-DSBGA package.

Protection suite: over-temp, over-voltage, short-circuit

Integrated fault protection covers over-temperature, over-voltage, and short-circuit conditions — no external supervisor needed for these failure modes.

Package and mounting — 49-DSBGA, 2.8 x 2.8 mm

Housed in a 49-bump DSBGA (2.8 x 2.8 mm) package, surface-mount only. The small footprint fits space-constrained designs, but the 0.4 mm pitch demands careful PCB layout and a controlled solder process.

Frequently asked questions

Is BQ24278YFFR compatible with 2-cell battery packs?

No — this charger is designed for single-cell (1-cell) Li-ion packs only. The number of cells is listed as 1, and the battery pack voltage is 3.7 V. For 2-cell packs, look at the BQ24279 or a dedicated multi-cell charger.

Does BQ24278YFFR have thermal foldback protection?

The fault protection list includes over-temperature, over-voltage, and short-circuit — but thermal foldback (current reduction during high temperature) is not explicitly listed. Over-temperature protection will shut down the charger if the die exceeds the threshold, but it is not a gradual foldback.

How does BQ24278YFFR compare to BQ24279?

The BQ24279 is a similar single-cell Li-ion charger but typically supports higher charge current or additional features like power-path management. For exact differences, compare the datasheets — the BQ24278YFFR is the lower-current, simpler-protection variant.