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Texas Instruments BQ24161YFFT — Power Management (PMIC / Gate Driver)

BQ24161YFFT – TI single-cell Li-Ion charger, I²C, 2.5A max

MPNBQ24161YFFT
Active

Texas Instruments BQ24161YFFT, single-cell Li-Ion/Polymer battery charger, I²C interface, 2.5A max charge current, over-temperature/over-voltage protection, 49-DSBGA (2.8x2.8 mm) package, -40°C to 85°C operating temperature.

$4.6593Ref. price · indicative, final on quote
Texas Instruments BQ24161YFFT datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BQ24161YFFT specifications
ParameterValue
MountingSurface Mount
Battery pack voltage3.7V
Supply voltage10V
Current - chargingConstant - Programmable
Charge current - max2.5A
InterfaceI²C
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case49-UFBGA, DSBGA
Number of cells1
Fault protectionOver Temperature, Over Voltage
Battery chemistryLithium Ion/Polymer

Product details

It integrates over-temperature and over-voltage fault protection, reducing external component count.

2.5 A charge current and I²C control

The 2.5 A maximum charge current supports fast charging of single-cell Li-Ion packs with a nominal voltage of 3.7 V. The I²C interface allows the host microcontroller to set charge current, termination threshold, and status monitoring without additional GPIOs. Fault protection covers over-temperature and over-voltage conditions, safeguarding the battery and charger during abnormal operation. The constant-current / constant-voltage charging profile is standard for Li-Ion/Polymer chemistry.

49-DSBGA footprint and layout considerations

The 49-DSBGA package measures 2.8 x 2.8 mm.

Frequently asked questions

Is the BQ24161YFFT compatible with a 3.7 V single-cell LiPo battery?

Yes. The device is designed for single-cell Li-Ion/Polymer batteries with a nominal pack voltage of 3.7 V and supports a programmable charge current up to 2.5 A.

Does the BQ24161 support USB input?

The device accepts up to 10 V input, so standard USB 5 V is within range. The I²C interface can be used to configure input current limits for USB enumeration (e.g., 100 mA / 500 mA) if the host controller manages the negotiation.