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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
Programmable Features Current, Timer, Voltage
Fault Protection Over Current, Over Voltage, Short Circuit
Charge Current - Max 500mA
Battery Pack Voltage 2.4V ~ 4.6V
Voltage - Supply (Max) 6.05V
Interface I2C
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 20-XFBGA, DSBGA
Supplier Device Package 20-DSBGA

The Texas Instruments BQ25157YFPR is a highly integrated linear battery charger designed for single-cell Lithium Ion batteries. It delivers a programmable charge current up to 500mA and supports a battery voltage range from 2.4V to 4.6V. Featuring an I2C interface for precise control and monitoring, it includes essential fault protection against overcurrent, overvoltage, and short circuits. Housed in a compact 20-XFBGA package, this charger is well-suited for space-limited portable and wearable applications.

  • Compact Solution: The 20-XFBGA package minimizes PCB area, ideal for space-constrained designs.
  • Precise Control: I2C interface allows for fine-tuning of charging parameters and system monitoring.
  • Comprehensive Safety: Integrated Over Current, Over Voltage, and Short Circuit protection safeguards the battery and system.
  • Wide Voltage Range: Supports battery voltages from 2.4V to 4.6V, offering flexibility for various cell configurations.

Wearable Devices

The BQ25157YFPR's 500mA charge current and compact 20-XFBGA package are ideal for space-constrained wearables like smartwatches and fitness bands, ensuring safe charging of a single Lithium Ion cell.

True Wireless Stereo (TWS) Earbuds

With I2C control and precise 2.4V to 4.6V regulation, this charger is perfect for the small battery packs in TWS earbuds and their charging cases, enabling optimized charging profiles.

Medical Sensors

For portable medical patches and sensors, the integrated Over Voltage and Over Current protection ensures reliable and safe operation of the single-cell Lithium Ion battery in critical health monitoring applications.

Smart Home Sensors

In IoT devices like smart locks and environmental sensors, the low charge current and small footprint allow for simple, always-ready power management from a single Lithium Ion cell.

Portable Electronics

This charger suits compact portable electronics such as Bluetooth trackers and styluses, where its small size and I2C programmability allow for flexible system integration and efficient battery charging.

Q: What battery chemistry does the BQ25157YFPR support?
A: It is designed for single-cell Lithium Ion batteries.
Q: How many cells can this charger manage?
A: It supports 1 cell.
Q: What is the maximum charge current?
A: The maximum charge current is 500mA.
Q: What is the battery voltage range?
A: The battery voltage range is 2.4V to 4.6V.
Q: What fault protections are included?
A: It includes Over Current, Over Voltage, and Short Circuit protection.
Q: What interface does it use for control?
A: It uses an I2C interface.
Base Product Number : BQ25157
2.4V ~ 4.6V 20-XFBGA 500mA Battery Charger DSBGA I2C Linear Battery Charger Lithium Ion
Q: What battery chemistry does the BQ25157YFPR support?
A: It is designed for single-cell Lithium Ion batteries.
Q: How many cells can this charger manage?
A: It supports 1 cell.
Q: What is the maximum charge current?
A: The maximum charge current is 500mA.
Q: What is the battery voltage range?
A: The battery voltage range is 2.4V to 4.6V.
Q: What fault protections are included?
A: It includes Over Current, Over Voltage, and Short Circuit protection.
Q: What interface does it use for control?
A: It uses an I2C interface.