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Product attributes Property Value
Manufacturer Texas Instruments
Product Series
Packaging Cut Tape (CT) | Tape & Reel (TR)
Battery Chemistry Lithium Ion
Number of Cells 1
Current - Charging Constant
Programmable Features Current, Voltage
Fault Protection Over Temperature, Over Voltage, Short Circuit
Charge Current - Max 300mA
Battery Pack Voltage 4.65V (Max)
Voltage - Supply (Max) 5.5V
Interface I2C
Operating Temperature -40°C ~ 125°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 25-XFBGA, DSBGA
Supplier Device Package 25-DSBGA
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Texas Instruments BQ25122YFPT is a highly integrated single-cell Lithium Ion battery charger. It delivers a programmable charge current up to 300mA and supports a maximum battery voltage of 4.65V. Controlled via an I2C interface, it offers precise charging management. The device includes essential fault protection features such as Over Temperature, Over Voltage, and Short Circuit. Housed in a compact 25-XFBGA package, it is designed for space-constrained portable and wearable applications.

  • Compact Solution: The 25-XFBGA package minimizes PCB area, enabling smaller product designs for wearables and IoT devices.
  • Precise Control: The I2C interface allows for accurate programming and monitoring of the charging process, leading to optimized battery health.
  • Robust Protection: Integrated Over Temperature, Over Voltage, and Short Circuit protection safeguards the battery and system from fault conditions.
  • Wide Temperature Range: With an operating temperature range of -40°C to 125°C (TJ), it is suitable for demanding environments.

Wearable Devices

The BQ25122YFPT's 300mA charge current and compact 25-XFBGA package make it ideal for small wearables like smartwatches and fitness bands, where space is at a premium and low current is sufficient.

Medical Sensors

For single-cell Lithium Ion medical patches and sensors, the I2C interface allows precise control and monitoring of the charging cycle, while the Over Voltage and Short Circuit protections ensure safe operation in sensitive environments.

IoT Nodes

Low-power IoT devices benefit from the BQ25122YFPT's efficient charging of a single Li-Ion cell. The wide operating temperature range of -40°C to 125°C (TJ) supports deployment in diverse outdoor or industrial IoT settings.

Portable Electronics

This charger is well-suited for compact portable electronics like Bluetooth earbuds and smart pens, where its small footprint and 300mA charge current align with the battery capacities of these devices.

Remote Controls

For consumer remote controls powered by a single Lithium Ion cell, the BQ25122YFPT provides a reliable and safe charging solution with its built-in Over Temperature and Short Circuit protection.

Q: What battery chemistry does the BQ25122YFPT support?
A: It is designed for Lithium Ion batteries.
Q: How many battery cells can this charger manage?
A: It supports a single cell (1 cell) configuration.
Q: What is the maximum charge current?
A: The maximum charge current is 300mA.
Q: What is the maximum battery pack voltage?
A: The maximum battery pack voltage is 4.65V.
Q: What fault protections are included?
A: It includes Over Temperature, Over Voltage, and Short Circuit protection.
Q: What interface does it use for control?
A: It uses an I2C interface.
Base Product Number : BQ25122
25-XFBGA 300mA 4.65V Battery Charger DSBGA I2C Linear Battery Charger Lithium Ion
Q: What battery chemistry does the BQ25122YFPT support?
A: It is designed for Lithium Ion batteries.
Q: How many battery cells can this charger manage?
A: It supports a single cell (1 cell) configuration.
Q: What is the maximum charge current?
A: The maximum charge current is 300mA.
Q: What is the maximum battery pack voltage?
A: The maximum battery pack voltage is 4.65V.
Q: What fault protections are included?
A: It includes Over Temperature, Over Voltage, and Short Circuit protection.
Q: What interface does it use for control?
A: It uses an I2C interface.