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Texas Instruments BQ24151AYFFT — Power Management (PMIC / Gate Driver)
Texas Instruments

BQ24151AYFFT Single-Cell Li-Ion Charger, I²C, 1.25A

MPNBQ24151AYFFT
NRND

Texas Instruments BQ24151AYFFT, single-cell Li-Ion/Polymer linear charger, I²C programmable, 1.25A max charge current, 4.44V max battery voltage, 20-DSBGA package, -40°C to 85°C operation.

$4.8906Ref. price · indicative, final on quote
BQ24151AYFFT 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.
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Specifications

BQ24151AYFFT Technical Specifications
ParameterValue
Mounting typeSurface Mount
Battery pack voltage4.44V (Max)
Voltage6V
Current - chargingConstant - Programmable
Charge current - max1.25A
InterfaceI²C
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case20-UFBGA, DSBGA
Number of cells1
Fault protectionOver Temperature, Over Voltage
Battery chemistryLithium Ion/Polymer
Programmable featuresCurrent, Timer, Voltage

Product details

NRND — plan your BOM transition

The BQ24151AYFFT carries a Not Recommended for New Designs (NRND) status. That means TI has flagged it for eventual end-of-life — new production builds should qualify a replacement before the last-time-buy window closes.

1.25 A charge current, 4.44 V battery ceiling

This is a single-cell Li-Ion/Polymer linear charger with a programmable constant-current charge up to 1.25 A and a maximum battery regulation voltage of 4.44 V. The charge current, termination timer, and voltage are all set over the I²C bus — no external resistors for current programming. The I²C interface lets the host controller adjust the charge profile on the fly — useful for charging different battery chemistries or implementing JEITA temperature-compensated charging without hardware changes.

20-DSBGA — small footprint, fine-pitch rework

Not a hand-solderable part — plan for a stencil and a hot-air or reflow oven if you are prototyping.

Fault protection and supply headroom

Built-in over-temperature and over-voltage fault protection reduce external component count. Maximum supply voltage is 6 V — a 5 V USB rail or a regulated 5 V wall adapter is the typical input.

Frequently asked questions

Is BQ24151AYFFT obsolete or NRND?

Yes, the BQ24151AYFFT is listed as Not Recommended for New Designs (NRND). It is still available for existing production through independent distribution, but new designs should select a current-production alternative.

What is the maximum charge current and battery voltage for BQ24151AYFFT?

Maximum charge current is 1.25 A, and the maximum battery regulation voltage is 4.44 V. Both are programmable via the I²C interface.

Does BQ24151AYFFT support I²C communication?

Yes, the BQ24151AYFFT uses an I²C interface for programming charge current, termination timer, and battery voltage. The pinout is standard for the BQ2415x family — the datasheet provides the register map and protocol details.