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Texas Instruments BQ24156YFFT — Power Management (PMIC / Gate Driver)

BQ24156YFFT Li-Ion Charger, 1.5 A, I²C, DSBGA-20 (Obsolete)

MPNBQ24156YFFT
Obsolete

Texas Instruments BQ24156YFFT single-cell Li-Ion/Polymer linear charger, 1.5 A max charge current, I²C programmable, 20-DSBGA package, -30°C to 85°C operation.

Texas Instruments BQ24156YFFT datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

BQ24156YFFT specifications
ParameterValue
MountingSurface Mount
Battery pack voltage4.44V (Max)
Supply voltage9V
Current - chargingConstant - Programmable
Charge current - max1.5A
InterfaceI²C
Operating temperature-30°C~85°C(TA)
PackageTape & Reel (TR)
Case20-UFBGA, DSBGA
Number of cells1
Fault protectionOver Temperature, Over Voltage
Battery chemistryLithium Ion/Polymer
Programmable featuresCurrent, Timer

Product details

It integrates over-temperature and over-voltage fault protection, reducing the need for external supervisory components in portable designs.

1.5 A charge current — charge-time floor

The 1.5 A maximum charge current sets the minimum charge time for a given battery capacity. For a 1500 mAh cell, a full constant-current charge at 1 A takes roughly 1.5 hours, not counting the constant-voltage taper. Charge current and timer are programmable via I²C, so the same BOM can support different cell sizes by adjusting the firmware settings.

20-DSBGA — layout and procurement reality

The 20-DSBGA package (0.4 mm pitch, 0.5 mm ball diameter) requires a controlled-impedance PCB with micro-via support and a solder-mask-defined pad. Not a hand-solderable part — plan for X-ray inspection on the assembly line.

Available inventory is limited to independent-distribution stock and surplus from prior production runs. Confirm availability and pricing at quote time.

Frequently asked questions

Does BQ24156YFFT work with BQ24156 I2C?

Yes. The BQ24156YFFT uses an I²C interface for host control of charge current, timer, and other programmable features. The register map is consistent with the BQ24156 family base product number.