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Product attributes Property Value
Manufacturer Texas Instruments
Product Series
Packaging Cut Tape (CT) | Tape & Reel (TR)
Battery Chemistry Lithium Ion/Polymer
Number of Cells 1
Current - Charging Constant - Programmable
Programmable Features Current, Timer, Voltage
Fault Protection Over Current, Over Temperature, Over Voltage, Short Circuit
Charge Current - Max 300mA
Battery Pack Voltage 5.5V (Max)
Voltage - Supply (Max) 20V
Interface I2C
Operating Temperature -40°C ~ 85°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 25-XFBGA, DSBGA
Supplier Device Package 25-DSBGA (2.53x2.47)

The BQ25123YFPT from Texas Instruments is a linear battery charger for single-cell Lithium Ion/Polymer batteries. It delivers a maximum charge current of 300mA, ideal for low-power portable devices. The charger supports a battery pack voltage up to 5.5V and includes over current, over temperature, over voltage, and short circuit protection. Its I2C interface allows precise control and monitoring. Available in a 25-XFBGA/DSBGA package, it operates across -40°C to 85°C (TJ).

  • Precise low-current charging: 300mA is perfect for small batteries in wearables.
  • I2C programmability: Enables fine-tuned charging profiles.
  • Comprehensive protection: Over current, over temperature, over voltage, and short circuit safeguards.
  • Ultra-compact package: 25-XFBGA/DSBGA minimizes PCB footprint.

Wearable Fitness Trackers

The low 300mA charge current is ideal for small-capacity batteries in fitness bands, ensuring safe and gentle charging.

True Wireless Earbuds

Compact 25-XFBGA package fits tiny charging cases while I2C control allows precise charge management.

Smart Watches

I2C interface enables dynamic current adjustment for varying battery states in smart wearables.

Medical Patches

Industrial temperature range (-40°C to 85°C) supports reliable operation in body-worn medical devices.

IoT Sensors

Low charge current and comprehensive protection make it suitable for battery-powered environmental sensors.

Q: What battery chemistry does the BQ25123YFPT support?
A: It supports Lithium Ion/Polymer batteries.
Q: How many cells can this charger handle?
A: It is designed for 1 cell.
Q: What is the maximum charge current?
A: The maximum charge current is 300mA.
Q: What is the battery pack voltage?
A: The battery pack voltage is 5.5V (Max).
Q: What fault protections are included?
A: It includes Over Current, Over Temperature, Over Voltage, and Short Circuit protection.
Q: What interface does it use?
A: It uses an I2C interface.
Base Product Number : BQ25123YFPT
25-XFBGA 300mA 5.5V Battery Charger Linear Battery Charger Lithium Ion/Polymer
Q: What battery chemistry does the BQ25123YFPT support?
A: It supports Lithium Ion/Polymer batteries.
Q: How many cells can this charger handle?
A: It is designed for 1 cell.
Q: What is the maximum charge current?
A: The maximum charge current is 300mA.
Q: What is the battery pack voltage?
A: The battery pack voltage is 5.5V (Max).
Q: What fault protections are included?
A: It includes Over Current, Over Temperature, Over Voltage, and Short Circuit protection.
Q: What interface does it use?
A: It uses an I2C interface.